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[nazev] => Study of Influence of Residual Stresses on Crack Propagation in Particulate Ceramic Composites
[nazev_orig] => Study of Influence of Residual Stresses on Crack Propagation in Particulate Ceramic Composites
[duvernost_udaju_id] => S
[popis] => The aim of the present work is to analyze the influence of residual stresses in the particulate ceramic composite on the crack propagation. The crack propagation direction was estimated using Sih’s criterion based on the strain energy density factor. A two-dimensional finite element model was developed for determination of crack path. The residual stresses resulting from the mismatch of coefficients of thermal expansion during the fabrication process of the composite were implemented to the computational model. The effect of the particles shape on the crack propagation was investigated. Conclusions of this paper can contribute to a better understanding of the propagation of micro-cracks in particulate composites in the field of residual stresses.
[popis_orig] => The aim of the present work is to analyze the influence of residual stresses in the particulate ceramic composite on the crack propagation. The crack propagation direction was estimated using Sih’s criterion based on the strain energy density factor. A two-dimensional finite element model was developed for determination of crack path. The residual stresses resulting from the mismatch of coefficients of thermal expansion during the fabrication process of the composite were implemented to the computational model. The effect of the particles shape on the crack propagation was investigated. Conclusions of this paper can contribute to a better understanding of the propagation of micro-cracks in particulate composites in the field of residual stresses.
[klicova_slova] => residual stresses, particulate ceramic composite, crack propagation, shielding effect
[klicova_slova_orig] => residual stresses, particulate ceramic composite, crack propagation, shielding effect
[url] => https://www.scientific.net/SSP.258.178
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[vycet_osob] => MAJER, Z.; NÁHLÍK, L.; ŠTEGNEROVÁ, K.; HUTAŘ, P.; BERMEJO, R.
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[identifikator] => ISBN 978-3-03835-626-4 ISSN 1012-0394
[identifikator_popis] => ISBN - MSMF8. International Conference on Materials Structure and Micromechanics of Fracture ISSN - Solid State Phenomena (CH)
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[citace_text] => MAJER, Z.; NÁHLÍK, L.; ŠTEGNEROVÁ, K.; HUTAŘ, P.; BERMEJO, R. Study of Influence of Residual Stresses on Crack Propagation in Particulate Ceramic Composites. In MSMF8. International Conference on Materials Structure and Micromechanics of Fracture. Solid State Phenomena. 8. Zürrich, Switzerland: Trans Tech Publications Inc., 2017. no. 258, p. 178-181. ISBN: 978-3-03835-626-4. ISSN: 1662-9779.
[citace_html] => MAJER, Z.; NÁHLÍK, L.; ŠTEGNEROVÁ, K.; HUTAŘ, P.; BERMEJO, R. Study of Influence of Residual Stresses on Crack Propagation in Particulate Ceramic Composites. In MSMF8. International Conference on Materials Structure and Micromechanics of Fracture. Solid State Phenomena. 8. Zürrich, Switzerland: Trans Tech Publications Inc., 2017. no. 258, p. 178-181. ISBN: 978-3-03835-626-4. ISSN: 1662-9779.
[citace_rtf] =>
[citace_bibtex] => @inproceedings{BUT141076,
author="Zdeněk {Majer} and Luboš {Náhlík} and Kateřina {Štegnerová} and Pavel {Hutař} and Raul {Bermejo}",
title="Study of Influence of Residual Stresses on Crack Propagation in Particulate Ceramic Composites",
booktitle="MSMF8. International Conference on Materials Structure and Micromechanics of Fracture",
year="2017",
series="8",
journal="Solid State Phenomena",
number="258",
pages="178--181",
publisher="Trans Tech Publications Inc.",
address="Zürrich, Switzerland",
doi="10.4028/www.scientific.net/SSP.258.178",
isbn="978-3-03835-626-4",
issn="1012-0394",
url="https://www.scientific.net/SSP.258.178"
}
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[nazev_en] => Study of Influence of Residual Stresses on Crack Propagation in Particulate Ceramic Composites
[popis_en] => The aim of the present work is to analyze the influence of residual stresses in the particulate ceramic composite on the crack propagation. The crack propagation direction was estimated using Sih’s criterion based on the strain energy density factor. A two-dimensional finite element model was developed for determination of crack path. The residual stresses resulting from the mismatch of coefficients of thermal expansion during the fabrication process of the composite were implemented to the computational model. The effect of the particles shape on the crack propagation was investigated. Conclusions of this paper can contribute to a better understanding of the propagation of micro-cracks in particulate composites in the field of residual stresses.
[klicova_slova_en] => residual stresses, particulate ceramic composite, crack propagation, shielding effect
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[1] => Array
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[nazev] => Senzorická síť s topologií binárního stromu
[nazev_orig] => Senzorická síť s topologií binárního stromu
[duvernost_udaju_id] => S
[popis] => Senzorická síť s topologií binárního stromu obsahuje kořen (A) sítě, určený k připojení sítě k řídicímu systému, k adresování koncového členu (C) a ke čtení dat těchto koncových členů (C), na nějž je přes alespoň jeden uzel (B) s přepínačem (6), určený k adresování koncového členu (C) pomocí signálu přivedeného prostřednictvím aktivního adresového vodiče na řídicí kontakt přepínače uzlu (B), a přes alespoň jedno propojovací vedení (D), obsahující adresové vodiče (2), napájecí vodič (3), datový vodič (4) a zemnicí vodič (5), připojen alespoň jeden koncový člen (C). Přepínač (6) uzlu (B) obsahuje řídicí kontakt, vstupní kontakt (a) a dva výstupní kontakty (b, c), kde na řídicí kontakt je přiveden aktivní adresový vodič (2a) nadvětve senzorické sítě, jehož signál přepínač (5) přepíná mezi podvětvemi, na vstupní kontakt (a) přepínače (6) je přiveden datový vodič (4) nadvětve senzorické sítě, a na výstupní kontakty (b, c) jsou připojeny datové vodiče podvětví senzorické sítě.
[popis_orig] => Senzorická síť s topologií binárního stromu obsahuje kořen (A) sítě, určený k připojení sítě k řídicímu systému, k adresování koncového členu (C) a ke čtení dat těchto koncových členů (C), na nějž je přes alespoň jeden uzel (B) s přepínačem (6), určený k adresování koncového členu (C) pomocí signálu přivedeného prostřednictvím aktivního adresového vodiče na řídicí kontakt přepínače uzlu (B), a přes alespoň jedno propojovací vedení (D), obsahující adresové vodiče (2), napájecí vodič (3), datový vodič (4) a zemnicí vodič (5), připojen alespoň jeden koncový člen (C). Přepínač (6) uzlu (B) obsahuje řídicí kontakt, vstupní kontakt (a) a dva výstupní kontakty (b, c), kde na řídicí kontakt je přiveden aktivní adresový vodič (2a) nadvětve senzorické sítě, jehož signál přepínač (5) přepíná mezi podvětvemi, na vstupní kontakt (a) přepínače (6) je přiveden datový vodič (4) nadvětve senzorické sítě, a na výstupní kontakty (b, c) jsou připojeny datové vodiče podvětví senzorické sítě.
[klicova_slova] => Senzorická síť, měrení dat, komunikační sběrnice
[klicova_slova_orig] => Senzorická síť, měrení dat, komunikační sběrnice
[url] => https://isdv.upv.cz/webapp/webapp.pts.det?xprim=10225999&lan=cs&s_majs=&s_puvo=&s_naze=&s_anot=
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[originalni_jazyk] => cs
[schvalil_id] => 18462
[schvaleno] => 2017-11-08
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[slozka_id] => 83558
[posledni_diagnostika] =>
[vycet_osob] => VĚCHET, S.; KREJSA, J.
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[diagnostika_pocet_upozorneni] => 0
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[citace_text] => VĚCHET, S.; KREJSA, J.; Vysoké učení technické v Brně, Brno: Senzorická síť s topologií binárního stromu. 306855, Patent. (2017)
[citace_html] => VĚCHET, S.; KREJSA, J.; Vysoké učení technické v Brně, Brno: Senzorická síť s topologií binárního stromu. 306855, Patent. (2017)
[citace_rtf] =>
[citace_bibtex] => @misc{BUT141112,
author="Stanislav {Věchet} and Jiří {Krejsa}",
title="Senzorická síť s topologií binárního stromu",
year="2017",
url="https://isdv.upv.cz/webapp/webapp.pts.det?xprim=10225999&lan=cs&s_majs=&s_puvo=&s_naze=&s_anot=",
note="Patent"
}
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[poznamka_metriky] =>
[nazev_en] => A sensory network with the binary tree topology
[popis_en] => The sensory network with the binary tree topology comprises the network root (A) for connecting the network to a control system for addressing the end member (C) and for reading the data of these end members (C), to which, there is connect at least one end member (C) via at least one node (B) with the switch (6) for addressing the end member (C) by means of a signal applied via an active addressed conductor to the node (B) switch and via at least one interconnection line (D) comprising the address conductors (2), the power conductor (3), the data conductor (4) and the earthed conductor (5). The node (B) switch (6) comprises a control contact, the input contact (a) and two output contacts (b, c), where the active address conductor (2a) of the superior branch of the sensory network, whose signal switch (5) switches between the subbranches, is fed to the control contact, the data conductor (4) of the superior branch of the sensory network is fed to the input contact (a) of the switch (6).
[klicova_slova_en] => Senzory netvork, data acquisition, communication bus
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[nazev] => Elastic properties of multi-layered ceramic systems for SOCs
[nazev_orig] => Elastic properties of multi-layered ceramic systems for SOCs
[duvernost_udaju_id] => S
[popis] => SOCs (Solid Oxide Cells) operate in harsh conditions and have to withstand considerable static and cyclic stresses, both mechanical and thermal. Thus, their mechanical stability is threatened. One fundamental aspect is the structural integrity of the cell. In fact, mechanical failure of a single cell can damage the whole stack, reducing the lifetime and the efficiency of the entire system. This study focuses on the ceramic layered structure of an Yttria-stabilized electrolyte supported cell. Its elastic modulus has been measured through destructive and nondestructive techniques (three-point bending test, impulse excitation technique, tensile test). Many literature sources deal with properties of the most common electrolytes and electrodes, yet co-sintering effects and interactions between layers are still not fully comprehended. In this contribution the overall elastic performance of the cell has been investigated, focusing on the role that the interface between layers plays in the changing of resulting mechanical properties. To enable this investigation, layers were added to the electrolyte one by one, thus allowing individual interactions to be distinguished with the help of numerical simulations. Results obtained for consecutive samples through different techniques
have been compared and discussed.
[popis_orig] => SOCs (Solid Oxide Cells) operate in harsh conditions and have to withstand considerable static and cyclic stresses, both mechanical and thermal. Thus, their mechanical stability is threatened. One fundamental aspect is the structural integrity of the cell. In fact, mechanical failure of a single cell can damage the whole stack, reducing the lifetime and the efficiency of the entire system. This study focuses on the ceramic layered structure of an Yttria-stabilized electrolyte supported cell. Its elastic modulus has been measured through destructive and nondestructive techniques (three-point bending test, impulse excitation technique, tensile test). Many literature sources deal with properties of the most common electrolytes and electrodes, yet co-sintering effects and interactions between layers are still not fully comprehended. In this contribution the overall elastic performance of the cell has been investigated, focusing on the role that the interface between layers plays in the changing of resulting mechanical properties. To enable this investigation, layers were added to the electrolyte one by one, thus allowing individual interactions to be distinguished with the help of numerical simulations. Results obtained for consecutive samples through different techniques
have been compared and discussed.
[klicova_slova] => elastic constants, finite element analysis, fuel cells, layered ceramics
[klicova_slova_orig] => elastic constants, finite element analysis, fuel cells, layered ceramics
[url] => http://onlinelibrary.wiley.com/doi/10.1111/ijac.12801/full
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[znamka] =>
[kategorie_nazev] => Publikační výsledky
[druh_nazev] => Článek WoS
[druh_popis] => Článek v odborném periodiku je obsažen v databázi Web of Science společností Thomson Reuters s příznakem „Article“, „Review“ nebo „Letter“
[stav] => Schválený
[vysledek_kategorie_id] => PV
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[upd_uid] => 999999
[ins_ts] => 2025-09-22
[upd_ts] => 2025-09-22
[status] => 9
[identifikator] => ISSN 1546-542X
[identifikator_popis] => ISSN - International journal of applied ceramic technology (US)
[riv_dodavka_id] => 1864
[riv_dodavka_oznaceni] => RIV18-TA0-26510___
[riv_dodavka_rok] => 2018
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[citace_text] => MASINI, A.; ŠIŠKA, F.; ŠEVEČEK, O.; CHLUP, Z.; DLOUHÝ, I. Elastic properties of multi-layered ceramic systems for SOCs. International journal of applied ceramic technology, 2018, vol. 2017, no. 1, p. 370-379. ISSN: 1744-7402.
[citace_html] => MASINI, A.; ŠIŠKA, F.; ŠEVEČEK, O.; CHLUP, Z.; DLOUHÝ, I. Elastic properties of multi-layered ceramic systems for SOCs. International journal of applied ceramic technology, 2018, vol. 2017, no. 1, p. 370-379. ISSN: 1744-7402.
[citace_rtf] =>
[citace_bibtex] => @article{BUT141135,
author="Alessia {Masini} and Filip {Šiška} and Oldřich {Ševeček} and Zdeněk {Chlup} and Ivo {Dlouhý}",
title="Elastic properties of multi-layered ceramic systems for SOCs",
journal="International journal of applied ceramic technology",
year="2018",
volume="2017",
number="1",
pages="370--379",
doi="10.1111/ijac.12801",
issn="1546-542X",
url="http://onlinelibrary.wiley.com/doi/10.1111/ijac.12801/full"
}
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[nazev_en] => Elastic properties of multi-layered ceramic systems for SOCs
[popis_en] => SOCs (Solid Oxide Cells) operate in harsh conditions and have to withstand considerable static and cyclic stresses, both mechanical and thermal. Thus, their mechanical stability is threatened. One fundamental aspect is the structural integrity of the cell. In fact, mechanical failure of a single cell can damage the whole stack, reducing the lifetime and the efficiency of the entire system. This study focuses on the ceramic layered structure of an Yttria-stabilized electrolyte supported cell. Its elastic modulus has been measured through destructive and nondestructive techniques (three-point bending test, impulse excitation technique, tensile test). Many literature sources deal with properties of the most common electrolytes and electrodes, yet co-sintering effects and interactions between layers are still not fully comprehended. In this contribution the overall elastic performance of the cell has been investigated, focusing on the role that the interface between layers plays in the changing of resulting mechanical properties. To enable this investigation, layers were added to the electrolyte one by one, thus allowing individual interactions to be distinguished with the help of numerical simulations. Results obtained for consecutive samples through different techniques
have been compared and discussed.
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[nazev] => Short fatigue crack behaviour under low cycle fatigue regime
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[popis] => This paper addresses the important issue of the description of short fatigue crack behaviour. It is typical for these cracks that they propagate under large scale yielding conditions at the crack tip, which means that the non-linear fracture mechanics has to be applied. This paper presents results of experiments designed to measure the short crack growth rates in five different materials – 316L steel, Eurofer 97 steel, ODS Eurofer steel, Duplex 2205 steel and Al 6082 alloy. The crack growth rates of these materials are described using different fracture mechanics parameters – the stress intensity factor, the J-integral and the plastic part of the J-integral. These approaches are evaluated and compared. The comparison revealed that the plastic part of the J-integral is the parameter governing the short crack growth rate in large scale yielding conditions. Moreover, crack growth rate data from all the tested materials measured at various loading levels lies on a unique curve. This remarkable observation suggests that the crack growth rate is determined by the extent of energy spent to plastic deformation, irrespective of the other materials properties.
[popis_orig] => This paper addresses the important issue of the description of short fatigue crack behaviour. It is typical for these cracks that they propagate under large scale yielding conditions at the crack tip, which means that the non-linear fracture mechanics has to be applied. This paper presents results of experiments designed to measure the short crack growth rates in five different materials – 316L steel, Eurofer 97 steel, ODS Eurofer steel, Duplex 2205 steel and Al 6082 alloy. The crack growth rates of these materials are described using different fracture mechanics parameters – the stress intensity factor, the J-integral and the plastic part of the J-integral. These approaches are evaluated and compared. The comparison revealed that the plastic part of the J-integral is the parameter governing the short crack growth rate in large scale yielding conditions. Moreover, crack growth rate data from all the tested materials measured at various loading levels lies on a unique curve. This remarkable observation suggests that the crack growth rate is determined by the extent of energy spent to plastic deformation, irrespective of the other materials properties.
[klicova_slova] => J-integral; Large scale yielding; Low cycle fatigue; Short fatigue crack;
[klicova_slova_orig] => J-integral; Large scale yielding; Low cycle fatigue; Short fatigue crack;
[url] => http://www.sciencedirect.com/science/article/pii/S0142112317302529?via%3Dihub
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author="Pavel {Hutař} and Jan {Poduška} and Miroslav {Šmíd} and Ivo {Kuběna} and Alice {Chlupová} and Luboš {Náhlík} and Jaroslav {Polák} and Tomáš {Kruml}",
title="Short fatigue crack behaviour under low cycle fatigue regime",
journal="International Journal of Fatigue",
year="2017",
volume="103",
number="October 2017",
pages="207--215",
doi="10.1016/j.ijfatigue.2017.06.002",
issn="0142-1123",
url="http://www.sciencedirect.com/science/article/pii/S0142112317302529?via%3Dihub"
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[nazev_en] => Short fatigue crack behaviour under low cycle fatigue regime
[popis_en] => This paper addresses the important issue of the description of short fatigue crack behaviour. It is typical for these cracks that they propagate under large scale yielding conditions at the crack tip, which means that the non-linear fracture mechanics has to be applied. This paper presents results of experiments designed to measure the short crack growth rates in five different materials – 316L steel, Eurofer 97 steel, ODS Eurofer steel, Duplex 2205 steel and Al 6082 alloy. The crack growth rates of these materials are described using different fracture mechanics parameters – the stress intensity factor, the J-integral and the plastic part of the J-integral. These approaches are evaluated and compared. The comparison revealed that the plastic part of the J-integral is the parameter governing the short crack growth rate in large scale yielding conditions. Moreover, crack growth rate data from all the tested materials measured at various loading levels lies on a unique curve. This remarkable observation suggests that the crack growth rate is determined by the extent of energy spent to plastic deformation, irrespective of the other materials properties.
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[nazev] => Residual Lifetime Determination of Low Temperature Co-Fired Ceramics
[nazev_orig] => Residual Lifetime Determination of Low Temperature Co-Fired Ceramics
[duvernost_udaju_id] => S
[popis] => The effect of subcritical crack growth is nowadays intensively studied mainly in relation to the strength of ceramic materials. The main aim of the contribution is to describe behavior of micro-crack propagating in the Low Temperature Co-fired Ceramics (LTCC) under subcritical crack growth (SCCG) conditions. The micro-crack behavior is significantly influenced by residual stresses developed in the LTCC due to different coefficients of thermal expansion of individual components. Two-dimensional numerical model was developed to simulate micro-crack propagation through the composite. The micro-crack propagation direction was determined using Sih’s criterion based on the strain energy density factor and the micro-crack path was obtained. The residual lifetime of the specific ceramic particulate composite (LTCC) was estimated on the basis of experimental data. The paper contributes to a better understanding of micro-crack propagation in particulate ceramic composites in the field of residual stresses.
[popis_orig] => The effect of subcritical crack growth is nowadays intensively studied mainly in relation to the strength of ceramic materials. The main aim of the contribution is to describe behavior of micro-crack propagating in the Low Temperature Co-fired Ceramics (LTCC) under subcritical crack growth (SCCG) conditions. The micro-crack behavior is significantly influenced by residual stresses developed in the LTCC due to different coefficients of thermal expansion of individual components. Two-dimensional numerical model was developed to simulate micro-crack propagation through the composite. The micro-crack propagation direction was determined using Sih’s criterion based on the strain energy density factor and the micro-crack path was obtained. The residual lifetime of the specific ceramic particulate composite (LTCC) was estimated on the basis of experimental data. The paper contributes to a better understanding of micro-crack propagation in particulate ceramic composites in the field of residual stresses.
[klicova_slova] => Ceramic Particulate Composite, LTCC, Residual Stresses, Subcritical Crack Propagation
[klicova_slova_orig] => Ceramic Particulate Composite, LTCC, Residual Stresses, Subcritical Crack Propagation
[url] => https://www.scientific.net/KEM.713.266
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[identifikator] => ISBN 978-3-03835-716-2 ISSN 1662-9795
[identifikator_popis] => ISBN - Advances in Fracture and Damage Mechanics XV ISSN - Key Engineering Materials (web) (CH)
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[citace_rtf] =>
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author="Zdeněk {Majer} and Kateřina {Štegnerová} and Pavel {Hutař} and Martin {Pletz} and Raul {Bermejo} and Luboš {Náhlík}",
title="Residual Lifetime Determination of Low Temperature Co-Fired Ceramics",
booktitle="Advances in Fracture and Damage Mechanics XV",
year="2017",
journal="Key Engineering Materials (web)",
volume="713",
number="1",
pages="266--269",
publisher="Trans Tech Publications Inc.",
address="Zürrich, Switzerland",
doi="10.4028/www.scientific.net/KEM.713.266",
isbn="978-3-03835-716-2",
issn="1662-9795",
url="https://www.scientific.net/KEM.713.266"
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[nazev_en] => Residual Lifetime Determination of Low Temperature Co-Fired Ceramics
[popis_en] => The effect of subcritical crack growth is nowadays intensively studied mainly in relation to the strength of ceramic materials. The main aim of the contribution is to describe behavior of micro-crack propagating in the Low Temperature Co-fired Ceramics (LTCC) under subcritical crack growth (SCCG) conditions. The micro-crack behavior is significantly influenced by residual stresses developed in the LTCC due to different coefficients of thermal expansion of individual components. Two-dimensional numerical model was developed to simulate micro-crack propagation through the composite. The micro-crack propagation direction was determined using Sih’s criterion based on the strain energy density factor and the micro-crack path was obtained. The residual lifetime of the specific ceramic particulate composite (LTCC) was estimated on the basis of experimental data. The paper contributes to a better understanding of micro-crack propagation in particulate ceramic composites in the field of residual stresses.
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[nazev_orig] => Lifetime Assessment of Particulate Ceramic Composite with Residual Stresses
[duvernost_udaju_id] => S
[popis] => A micro-crack propagation in particulate ceramic based composite was studied using finite element method (FEM). Subcritical crack growth (SCG) was numerically simulated under complex load conditions (mechanical loading and loading by internal residual stresses). The effect of residual stresses on the crack propagation was studied. Two-dimensional computational model of particulate ceramic composite with material properties corresponding to low temperature co-fired ceramics (LTCC) was developed. The results indicate that the presence of residual stresses significantly reduces values of stress intensity factor in the vicinity of composite surface and the direction of residual stresses around the particles contributes to the micro-crack deflection from the particles. The time to failure of the composite under mechanical loading was determined. Results obtained contribute to a better understanding of the role of residual stresses during micro-crack propagation in ceramic particulate composites.
[popis_orig] => A micro-crack propagation in particulate ceramic based composite was studied using finite element method (FEM). Subcritical crack growth (SCG) was numerically simulated under complex load conditions (mechanical loading and loading by internal residual stresses). The effect of residual stresses on the crack propagation was studied. Two-dimensional computational model of particulate ceramic composite with material properties corresponding to low temperature co-fired ceramics (LTCC) was developed. The results indicate that the presence of residual stresses significantly reduces values of stress intensity factor in the vicinity of composite surface and the direction of residual stresses around the particles contributes to the micro-crack deflection from the particles. The time to failure of the composite under mechanical loading was determined. Results obtained contribute to a better understanding of the role of residual stresses during micro-crack propagation in ceramic particulate composites.
[klicova_slova] => Ceramic Particulate Composite, Residual Stress, Sub-Critical Crack Growth
[klicova_slova_orig] => Ceramic Particulate Composite, Residual Stress, Sub-Critical Crack Growth
[url] => https://www.scientific.net/KEM.754.107
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[citace_text] => NÁHLÍK, L.; MAJER, Z.; ŠTEGNEROVÁ, K.; HUTAŘ, P. Lifetime Assessment of Particulate Ceramic Composite with Residual Stresses. In Advances in Fracture and Damage Mechanics XVI. Key Engineering Materials (web). Zürrich, Switzerland: Trans Tech Publications Inc., 2018. no. 1, p. 107-110. ISBN: 978-3-0357-1168-4. ISSN: 1662-9795.
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author="Luboš {Náhlík} and Zdeněk {Majer} and Kateřina {Štegnerová} and Pavel {Hutař}",
title="Lifetime Assessment of Particulate Ceramic Composite with Residual Stresses",
booktitle="Advances in Fracture and Damage Mechanics XVI",
year="2018",
journal="Key Engineering Materials (web)",
volume="754",
number="1",
pages="107--110",
publisher="Trans Tech Publications Inc.",
address="Zürrich, Switzerland",
doi="10.4028/www.scientific.net/KEM.754.107",
isbn="978-3-0357-1168-4",
issn="1662-9795",
url="https://www.scientific.net/KEM.754.107"
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[nazev_en] => Lifetime Assessment of Particulate Ceramic Composite with Residual Stresses
[popis_en] => A micro-crack propagation in particulate ceramic based composite was studied using finite element method (FEM). Subcritical crack growth (SCG) was numerically simulated under complex load conditions (mechanical loading and loading by internal residual stresses). The effect of residual stresses on the crack propagation was studied. Two-dimensional computational model of particulate ceramic composite with material properties corresponding to low temperature co-fired ceramics (LTCC) was developed. The results indicate that the presence of residual stresses significantly reduces values of stress intensity factor in the vicinity of composite surface and the direction of residual stresses around the particles contributes to the micro-crack deflection from the particles. The time to failure of the composite under mechanical loading was determined. Results obtained contribute to a better understanding of the role of residual stresses during micro-crack propagation in ceramic particulate composites.
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[citace_text] => ŠTEGNEROVÁ, K.; MAJER, Z.; HUTAŘ, P.; NÁHLÍK, L. 3D Model of Crack Propagation in Particulate Ceramic Composite Containing Residual Stresses. In Advances in Fracture and Damage Mechanics XVI. Key Engineering Materials (print). Zürrich, Switzerland: Trans Tech Publications Inc., 2018. no. 1, p. 103-106. ISBN: 9783035713503. ISSN: 1013-9826.
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title="3D Model of Crack Propagation in Particulate Ceramic Composite Containing Residual Stresses",
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[oecd_tree_obor_nazev] => 2.2 Electrical engineering, Electronic engineering, Information engineering
[oecd_tree_podobor_id] => 20201
[oecd_tree_podobor_nazev] => Electrical and electronic engineering
[poznamka_metriky] =>
[nazev_en] => Nositelné zařízení pro výrobu elektrické energie
[popis_en] => The invention is related to wearable device for generating electricity from movements and mechanical vibrations of low frequencies
[klicova_slova_en] => -
[vysledek_datum] => 2019-04-03T00:00:00+02:00
)
[9] => Array
(
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[nazev] => Raman antenna effect from exciton–phonon coupling in organic semiconducting nanobelts
[nazev_orig] => Raman antenna effect from exciton–phonon coupling in organic semiconducting nanobelts
[duvernost_udaju_id] => S
[popis] => The highly anisotropic interactions in organic semiconductors together with the soft character of organic materials lead to strong coupling between nuclear vibrations and exciton dynamics, which potentially results in anomalous electrical, optical and optoelectrical properties. Here, we report on the Raman antenna effect from organic semiconducting nanobelts 6,13-dichloropentacene (DCP), resulting from the coupling of molecular excitons and intramolecular phonons. The highly ordered crystalline structure in DCP nanobelts enables the precise polarization-resolved spectroscopic measurement. The angle-dependent Raman spectroscopy under resonant excitation shows that all Raman modes from the skeletal vibrations of DCP molecule act like a nearly perfect dipole antenna IRaman ∝ cos4(θ − 90), with almost zero (maximum) Raman scattering parallel (perpendicular) to the nanobelt's long-axis. The Raman antenna effect in DCP nanobelt is originated from the coupling between molecular skeletal vibrations and intramolecular exciton and the confinement of intermolecular excitons. It dramatically enhances the Raman polarization ratio (ρ = I‖/I⊥ > 25) and amplifies the anisotropy of the angle-dependent Raman scattering (κRaman = Imax/Imin > 12) of DCP nanobelts. These findings have crucial implications for fundamental understanding on the exciton–phonon coupling and its effects on the optical properties of organic semiconductors.
[popis_orig] => The highly anisotropic interactions in organic semiconductors together with the soft character of organic materials lead to strong coupling between nuclear vibrations and exciton dynamics, which potentially results in anomalous electrical, optical and optoelectrical properties. Here, we report on the Raman antenna effect from organic semiconducting nanobelts 6,13-dichloropentacene (DCP), resulting from the coupling of molecular excitons and intramolecular phonons. The highly ordered crystalline structure in DCP nanobelts enables the precise polarization-resolved spectroscopic measurement. The angle-dependent Raman spectroscopy under resonant excitation shows that all Raman modes from the skeletal vibrations of DCP molecule act like a nearly perfect dipole antenna IRaman ∝ cos4(θ − 90), with almost zero (maximum) Raman scattering parallel (perpendicular) to the nanobelt's long-axis. The Raman antenna effect in DCP nanobelt is originated from the coupling between molecular skeletal vibrations and intramolecular exciton and the confinement of intermolecular excitons. It dramatically enhances the Raman polarization ratio (ρ = I‖/I⊥ > 25) and amplifies the anisotropy of the angle-dependent Raman scattering (κRaman = Imax/Imin > 12) of DCP nanobelts. These findings have crucial implications for fundamental understanding on the exciton–phonon coupling and its effects on the optical properties of organic semiconductors.
[klicova_slova] => FIELD-EFFECT TRANSISTORS; CHARGE-TRANSPORT; SINGLE-CRYSTALS; SPECTROSCOPY; PENTACENE; 6,13-DICHLOROPENTACENE; FABRICATION; NANOWIRES; POLYMER; DEVICES
[klicova_slova_orig] => FIELD-EFFECT TRANSISTORS; CHARGE-TRANSPORT; SINGLE-CRYSTALS; SPECTROSCOPY; PENTACENE; 6,13-DICHLOROPENTACENE; FABRICATION; NANOWIRES; POLYMER; DEVICES
[url] => http://dx.doi.org/10.1039/C7NR07212K
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[odpovedny_utvar_nazev] => Ústav mechaniky těles, mechatroniky a biomechaniky
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[vycet_osob] => WANG, M.; GONG, Y.; ALZINA, F.; SVOBODA, O.; BALLESTEROS, B.; TORRES, C.; XIAO, S.; HE, J.; ZHANG, Z.
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[upd_uid] => 999999
[ins_ts] => 2025-09-22
[upd_ts] => 2025-09-22
[status] => 9
[identifikator] => ISSN 2040-3364
[identifikator_popis] => ISSN - Nanoscale (GB)
[riv_dodavka_id] => 1864
[riv_dodavka_oznaceni] => RIV18-TA0-26510___
[riv_dodavka_rok] => 2018
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[citace_text] => WANG, M.; GONG, Y.; ALZINA, F.; SVOBODA, O.; BALLESTEROS, B.; TORRES, C.; XIAO, S.; HE, J.; ZHANG, Z. Raman antenna effect from exciton–phonon coupling in organic semiconducting nanobelts. Nanoscale, 2017, vol. 9, no. 48, p. 19328-19336. ISSN: 2040-3364.
[citace_html] => WANG, M.; GONG, Y.; ALZINA, F.; SVOBODA, O.; BALLESTEROS, B.; TORRES, C.; XIAO, S.; HE, J.; ZHANG, Z. Raman antenna effect from exciton–phonon coupling in organic semiconducting nanobelts. Nanoscale, 2017, vol. 9, no. 48, p. 19328-19336. ISSN: 2040-3364.
[citace_rtf] =>
[citace_bibtex] => @article{BUT143260,
author="Mao {Wang} and Yi {Gong} and Francesc {Alzina} and Ondřej {Svoboda} and Belén {Ballesteros} and Clivia Marfa Sotomayor {Torres} and Senbo {Xiao} and Jianying {He} and Zhiliang {Zhang}",
title="Raman antenna effect from exciton–phonon coupling in organic semiconducting nanobelts",
journal="Nanoscale",
year="2017",
volume="9",
number="48",
pages="19328--19336",
doi="10.1039/C7NR07212K",
issn="2040-3364",
url="http://dx.doi.org/10.1039/C7NR07212K"
}
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[nazev_en] => Raman antenna effect from exciton–phonon coupling in organic semiconducting nanobelts
[popis_en] => The highly anisotropic interactions in organic semiconductors together with the soft character of organic materials lead to strong coupling between nuclear vibrations and exciton dynamics, which potentially results in anomalous electrical, optical and optoelectrical properties. Here, we report on the Raman antenna effect from organic semiconducting nanobelts 6,13-dichloropentacene (DCP), resulting from the coupling of molecular excitons and intramolecular phonons. The highly ordered crystalline structure in DCP nanobelts enables the precise polarization-resolved spectroscopic measurement. The angle-dependent Raman spectroscopy under resonant excitation shows that all Raman modes from the skeletal vibrations of DCP molecule act like a nearly perfect dipole antenna IRaman ∝ cos4(θ − 90), with almost zero (maximum) Raman scattering parallel (perpendicular) to the nanobelt's long-axis. The Raman antenna effect in DCP nanobelt is originated from the coupling between molecular skeletal vibrations and intramolecular exciton and the confinement of intermolecular excitons. It dramatically enhances the Raman polarization ratio (ρ = I‖/I⊥ > 25) and amplifies the anisotropy of the angle-dependent Raman scattering (κRaman = Imax/Imin > 12) of DCP nanobelts. These findings have crucial implications for fundamental understanding on the exciton–phonon coupling and its effects on the optical properties of organic semiconductors.
[klicova_slova_en] => FIELD-EFFECT TRANSISTORS; CHARGE-TRANSPORT; SINGLE-CRYSTALS; SPECTROSCOPY; PENTACENE; 6,13-DICHLOROPENTACENE; FABRICATION; NANOWIRES; POLYMER; DEVICES
[vysledek_datum] => 2017-11-27T00:00:00+01:00
)
[10] => Array
(
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[nazev] => Two-dimensional finite element model of vowel production: properties of self-oscillating vocal folds interacting with fluid flow
[nazev_orig] => Two-dimensional finite element model of vowel production: properties of self-oscillating vocal folds interacting with fluid flow
[duvernost_udaju_id] => S
[popis] => The current study concerns finite element (FE) model of flow-induced self-sustained oscillation of the human vocal folds (VF) in interaction with vocal tract (VT) acoustics. Two dimensional (2D) FE model consists of the fluid model (involving the VT and trachea) and the structure model (the VF). Geometry of the VT was converted from magnetic resonance images (MRI) data for production of a Czech vowels. The VF model is based on widely used Scherer’s M5 geometry with four-layered structure comprising epithelium, superficial lamina propria (SLP), ligament and muscle. For solving fluid-structure interaction explicit coupling scheme is applied with separate solvers for the structure and fluid domain. Acoustic wave propagation is obtained from solution of compressible NS equations. Phonation of the Czech vowels [a:], [i:] and [u:] were simulated and influence of thickness and material characteristics of the SLP on vocal folds vibrations and produced sound were analysed. Using this model was also analyzed the effect of turbulence model in fluid flow calculation. The developed FE model can be used to study the effects of pathological changes in VF tissue such as Reinke’s edem on VF movement and on the produced sound.
[popis_orig] => The current study concerns finite element (FE) model of flow-induced self-sustained oscillation of the human vocal folds (VF) in interaction with vocal tract (VT) acoustics. Two dimensional (2D) FE model consists of the fluid model (involving the VT and trachea) and the structure model (the VF). Geometry of the VT was converted from magnetic resonance images (MRI) data for production of a Czech vowels. The VF model is based on widely used Scherer’s M5 geometry with four-layered structure comprising epithelium, superficial lamina propria (SLP), ligament and muscle. For solving fluid-structure interaction explicit coupling scheme is applied with separate solvers for the structure and fluid domain. Acoustic wave propagation is obtained from solution of compressible NS equations. Phonation of the Czech vowels [a:], [i:] and [u:] were simulated and influence of thickness and material characteristics of the SLP on vocal folds vibrations and produced sound were analysed. Using this model was also analyzed the effect of turbulence model in fluid flow calculation. The developed FE model can be used to study the effects of pathological changes in VF tissue such as Reinke’s edem on VF movement and on the produced sound.
[klicova_slova] => Biomechanics of voice; Vocal folds; Fluid-structure-acoustic interaction; Finite element method;
[klicova_slova_orig] => Biomechanics of voice; Vocal folds; Fluid-structure-acoustic interaction; Finite element method;
[url] => http://www.pevoc.org/
[oecd_obor_id] => 10307
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[odpovedny_utvar_nazev] => Ústav mechaniky těles, mechatroniky a biomechaniky
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[vycet_osob] => HÁJEK, P.; ŠVANCARA, P.; HORÁČEK, J.; ŠVEC, J.
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[citace_text] => HÁJEK, P.; ŠVANCARA, P.; HORÁČEK, J.; ŠVEC, J. Two-dimensional finite element model of vowel production: properties of self-oscillating vocal folds interacting with fluid flow. Ghent: 2017.
[citace_html] => HÁJEK, P.; ŠVANCARA, P.; HORÁČEK, J.; ŠVEC, J. Two-dimensional finite element model of vowel production: properties of self-oscillating vocal folds interacting with fluid flow. Ghent: 2017.
[citace_rtf] =>
[citace_bibtex] => @misc{BUT143390,
author="Petr {Hájek} and Pavel {Švancara} and Jaromír {Horáček} and Jan G. {Švec}",
title="Two-dimensional finite element model of vowel production: properties of self-oscillating vocal folds interacting with fluid flow",
year="2017",
address="Ghent",
url="http://www.pevoc.org/",
note="Abstract"
}
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[nazev_en] => Two-dimensional finite element model of vowel production: properties of self-oscillating vocal folds interacting with fluid flow
[popis_en] => The current study concerns finite element (FE) model of flow-induced self-sustained oscillation of the human vocal folds (VF) in interaction with vocal tract (VT) acoustics. Two dimensional (2D) FE model consists of the fluid model (involving the VT and trachea) and the structure model (the VF). Geometry of the VT was converted from magnetic resonance images (MRI) data for production of a Czech vowels. The VF model is based on widely used Scherer’s M5 geometry with four-layered structure comprising epithelium, superficial lamina propria (SLP), ligament and muscle. For solving fluid-structure interaction explicit coupling scheme is applied with separate solvers for the structure and fluid domain. Acoustic wave propagation is obtained from solution of compressible NS equations. Phonation of the Czech vowels [a:], [i:] and [u:] were simulated and influence of thickness and material characteristics of the SLP on vocal folds vibrations and produced sound were analysed. Using this model was also analyzed the effect of turbulence model in fluid flow calculation. The developed FE model can be used to study the effects of pathological changes in VF tissue such as Reinke’s edem on VF movement and on the produced sound.
[klicova_slova_en] => Biomechanics of voice; Vocal folds; Fluid-structure-acoustic interaction; Finite element method;
[vysledek_datum] => 2017-08-30T00:00:00+02:00
)
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(
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[nazev] => Modelling and Simulation of Vehicle Boot Door
[nazev_orig] => Modelling and Simulation of Vehicle Boot Door
[duvernost_udaju_id] => S
[popis] => The focus of article is the measurement and mathematical modelling
of electromechanical car boot door mechanism. In this case, the problem is solved
as a two-dimensional mechanism in Matlab/Simulink. The main idea of this
model is to allow testing of new control algorithms and control units. To do so,
it is necessary to create a computational model in order to avoid using expensive
real testing prototypes and devices.
The outcome is a parametric mathematical model that allows us to simulate the
standard behaviour of a car boot door. Since the model is parametric, it is possible
to simulate different mechanisms if the correct set of parameters is provided.
With certain modifications, it is possible to run the model in real-time.
[popis_orig] => The focus of article is the measurement and mathematical modelling
of electromechanical car boot door mechanism. In this case, the problem is solved
as a two-dimensional mechanism in Matlab/Simulink. The main idea of this
model is to allow testing of new control algorithms and control units. To do so,
it is necessary to create a computational model in order to avoid using expensive
real testing prototypes and devices.
The outcome is a parametric mathematical model that allows us to simulate the
standard behaviour of a car boot door. Since the model is parametric, it is possible
to simulate different mechanisms if the correct set of parameters is provided.
With certain modifications, it is possible to run the model in real-time.
[klicova_slova] => Simulink; Simulation; Mathematical modelling; Dynamics; Boot; Door; HIL
[klicova_slova_orig] => Simulink; Simulation; Mathematical modelling; Dynamics; Boot; Door; HIL
[url] =>
[oecd_obor_id] => 20201
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[originalni_jazyk] => en
[schvalil_id] => 200135
[schvaleno] => 2021-02-25
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[vycet_osob] => MUSIL, F.; BRABLC, M.
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[kod_doi] => 10.1007/978-3-319-65960-2_50
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[kategorie_nazev] => Publikační výsledky
[druh_nazev] => Stať ve sborníku v databázi WoS či Scopus
[druh_popis] => Stať ve sborníku v databázi WoS či Scopus
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[upravil] => Informační systém Automat
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[ins_ts] => 2025-09-22
[upd_ts] => 2025-09-22
[status] => 9
[identifikator] => ISBN 978-3-319-65960-2 ISSN 2194-5357
[identifikator_popis] => ISBN - MECHATRONICS: International Conference Mechatronics ISSN - Advances in Intelligent Systems and Computing (CH)
[riv_dodavka_id] => 2515
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[citace_text] => MUSIL, F.; BRABLC, M. Modelling and Simulation of Vehicle Boot Door. In MECHATRONICS: International Conference Mechatronics. Advances in Intelligent Systems and Computing. 2017. p. 402-409. ISBN: 978-3-319-65960-2. ISSN: 2194-5357.
[citace_html] => MUSIL, F.; BRABLC, M. Modelling and Simulation of Vehicle Boot Door. In MECHATRONICS: International Conference Mechatronics. Advances in Intelligent Systems and Computing. 2017. p. 402-409. ISBN: 978-3-319-65960-2. ISSN: 2194-5357.
[citace_rtf] =>
[citace_bibtex] => @inproceedings{BUT144110,
author="Filip {Musil} and Martin {Brablc}",
title="Modelling and Simulation of Vehicle Boot Door",
booktitle="MECHATRONICS: International Conference Mechatronics",
year="2017",
journal="Advances in Intelligent Systems and Computing",
volume="644",
pages="402--409",
doi="10.1007/978-3-319-65960-2\{_}50",
isbn="978-3-319-65960-2",
issn="2194-5357"
}
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[poznamka_metriky] =>
[nazev_en] => Modelling and Simulation of Vehicle Boot Door
[popis_en] => The focus of article is the measurement and mathematical modelling
of electromechanical car boot door mechanism. In this case, the problem is solved
as a two-dimensional mechanism in Matlab/Simulink. The main idea of this
model is to allow testing of new control algorithms and control units. To do so,
it is necessary to create a computational model in order to avoid using expensive
real testing prototypes and devices.
The outcome is a parametric mathematical model that allows us to simulate the
standard behaviour of a car boot door. Since the model is parametric, it is possible
to simulate different mechanisms if the correct set of parameters is provided.
With certain modifications, it is possible to run the model in real-time.
[klicova_slova_en] => Simulink; Simulation; Mathematical modelling; Dynamics; Boot; Door; HIL
[vysledek_datum] => 2017-09-06T00:00:00+02:00
)
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(
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[nazev] => Applicability of the critical energy release rate for predicting the growth of a crack in nanoscale materials applying the strain gradient elasticity theory
[nazev_orig] => Applicability of the critical energy release rate for predicting the growth of a crack in nanoscale materials applying the strain gradient elasticity theory
[duvernost_udaju_id] => S
[popis] => The paper investigates the limits of applicability of the critical energy release rate for predicting the growth of a crack in nanoscale materials applying the strain gradient elasticity theory (SGET) capable to capture size effects, nonlocal material point interactions and surface effects in the form of (phenomenological) higher-order stress/strain gradients.
[popis_orig] => The paper investigates the limits of applicability of the critical energy release rate for predicting the growth of a crack in nanoscale materials applying the strain gradient elasticity theory (SGET) capable to capture size effects, nonlocal material point interactions and surface effects in the form of (phenomenological) higher-order stress/strain gradients.
[klicova_slova] => fracture nanomechanics; strain gradient elasticity; FEM; size dependent phenomena
[klicova_slova_orig] => fracture nanomechanics; strain gradient elasticity; FEM; size dependent phenomena
[url] => https://www.scopus.com/record/display.uri?eid=2-s2.0-85029903072&origin=resultslist&sort=plf-f&src=s&st1=Skalka&st2=&sid=473797ea421d7eb007eaab879f226967&sot=b&sdt=b&sl=19&s=AUTHOR-NAME%28Skalka%29&relpos=8&citeCnt=0&searchTerm=
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[vycet_osob] => KOTOUL, M.; SKALKA, P.
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[kod_doi] => 10.4028/www.scientific.net/KEM.754.185
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[upravil] => Informační systém Automat
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[upd_uid] => 999999
[ins_ts] => 2025-09-22
[upd_ts] => 2025-09-22
[status] => 9
[identifikator] => ISBN 978-3-0357-1168-4 ISSN 1662-9795
[identifikator_popis] => ISBN - Advances in Fracture and Damage Mechanics XVI ISSN - Key Engineering Materials (web) (CH)
[riv_dodavka_id] => 1839
[riv_dodavka_oznaceni] => RIV18-TA0-26510___
[riv_dodavka_rok] => 2018
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[citace_text] => KOTOUL, M.; SKALKA, P. Applicability of the critical energy release rate for predicting the growth of a crack in nanoscale materials applying the strain gradient elasticity theory. In Advances in Fracture and Damage Mechanics XVI. Key Engineering Materials (web). Švýcarsko: Trans Tech Publications Ltd, 2017. p. 185-188. ISBN: 978-3-0357-1168-4. ISSN: 1662-9795.
[citace_html] => KOTOUL, M.; SKALKA, P. Applicability of the critical energy release rate for predicting the growth of a crack in nanoscale materials applying the strain gradient elasticity theory. In Advances in Fracture and Damage Mechanics XVI. Key Engineering Materials (web). Švýcarsko: Trans Tech Publications Ltd, 2017. p. 185-188. ISBN: 978-3-0357-1168-4. ISSN: 1662-9795.
[citace_rtf] =>
[citace_bibtex] => @inproceedings{BUT145373,
author="Michal {Kotoul} and Petr {Skalka}",
title="Applicability of the critical energy release rate for predicting the growth of a crack in nanoscale materials applying the strain gradient elasticity theory",
booktitle="Advances in Fracture and Damage Mechanics XVI",
year="2017",
journal="Key Engineering Materials (web)",
volume="754",
number="1",
pages="185--188",
publisher="Trans Tech Publications Ltd",
address="Švýcarsko",
doi="10.4028/www.scientific.net/KEM.754.185",
isbn="978-3-0357-1168-4",
issn="1662-9795",
url="https://www.scopus.com/record/display.uri?eid=2-s2.0-85029903072&origin=resultslist&sort=plf-f&src=s&st1=Skalka&st2=&sid=473797ea421d7eb007eaab879f226967&sot=b&sdt=b&sl=19&s=AUTHOR-NAME%28Skalka%29&relpos=8&citeCnt=0&searchTerm="
}
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[oecd_tree_podobor_nazev] => Audio engineering, reliability analysis
[poznamka_metriky] =>
[nazev_en] => Applicability of the critical energy release rate for predicting the growth of a crack in nanoscale materials applying the strain gradient elasticity theory
[popis_en] => The paper investigates the limits of applicability of the critical energy release rate for predicting the growth of a crack in nanoscale materials applying the strain gradient elasticity theory (SGET) capable to capture size effects, nonlocal material point interactions and surface effects in the form of (phenomenological) higher-order stress/strain gradients.
[klicova_slova_en] => fracture nanomechanics; strain gradient elasticity; FEM; size dependent phenomena
[vysledek_datum] => 2017-08-08T00:00:00+02:00
)
[13] => Array
(
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[nazev] => Micro finite element analysis of dental implants under different loading conditions
[nazev_orig] => Micro finite element analysis of dental implants under different loading conditions
[duvernost_udaju_id] => S
[popis] => Osseointegration is paramount for the longevity of dental implants and is significantly influenced by biomechanical stimuli. The aim of the present study was to assess the micro-strain and displacement induced by loaded dental implants at different stages of osseointegration using finite element analysis (FEA). Computational models of two mandible segments with different trabecular densities were constructed using microCT data. Three different implant loading directions and two osseointegration stages were considered in the stress-strain analysis of the bone-implant assembly. The bony segments were analyzed using two approaches. The first approach was based on Mechanostat strain intervals and the second approach was based on tensile/compression yield strains. The results of this study revealed that bone surrounding dental implants is critically strained in cases when only a partial osseointegration is present and when an implant is loaded by buccolingual forces. In such cases, implants also encounter high stresses. Displacements of partially-osseointegrated implant are significantly larger than those of fully-osseointegrated implants. It can be concluded that the partial osseointegration is a potential risk in terms of implant longevity.
[popis_orig] => Osseointegration is paramount for the longevity of dental implants and is significantly influenced by biomechanical stimuli. The aim of the present study was to assess the micro-strain and displacement induced by loaded dental implants at different stages of osseointegration using finite element analysis (FEA). Computational models of two mandible segments with different trabecular densities were constructed using microCT data. Three different implant loading directions and two osseointegration stages were considered in the stress-strain analysis of the bone-implant assembly. The bony segments were analyzed using two approaches. The first approach was based on Mechanostat strain intervals and the second approach was based on tensile/compression yield strains. The results of this study revealed that bone surrounding dental implants is critically strained in cases when only a partial osseointegration is present and when an implant is loaded by buccolingual forces. In such cases, implants also encounter high stresses. Displacements of partially-osseointegrated implant are significantly larger than those of fully-osseointegrated implants. It can be concluded that the partial osseointegration is a potential risk in terms of implant longevity.
[klicova_slova] => Micro finite element analysis; Dental implants; Osseointegration; Stress intensity; Strain intensity
[klicova_slova_orig] => Micro finite element analysis; Dental implants; Osseointegration; Stress intensity; Strain intensity
[url] => https://www.sciencedirect.com/science/article/pii/S0010482518300696
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[vycet_osob] => MARCIÁN, P.; WOLFF, J.; HORÁČKOVÁ, L.; KAISER, J.; ZIKMUND, T.; BORÁK, L.
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[druh_popis] => Článek v odborném periodiku je obsažen v databázi Web of Science společností Thomson Reuters s příznakem „Article“, „Review“ nebo „Letter“
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[upd_uid] => 999999
[ins_ts] => 2025-09-22
[upd_ts] => 2025-09-22
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[identifikator] => ISSN 0010-4825
[identifikator_popis] => ISSN - Computers in Biology and Medicine (US)
[riv_dodavka_id] => 2044
[riv_dodavka_oznaceni] => RIV19-MSM-26210___
[riv_dodavka_rok] => 2019
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[citace_text] => MARCIÁN, P.; WOLFF, J.; HORÁČKOVÁ, L.; KAISER, J.; ZIKMUND, T.; BORÁK, L. Micro finite element analysis of dental implants under different loading conditions. Computers in Biology and Medicine, 2018, no. 96, p. 157-165. ISSN: 0010-4825.
[citace_html] => MARCIÁN, P.; WOLFF, J.; HORÁČKOVÁ, L.; KAISER, J.; ZIKMUND, T.; BORÁK, L. Micro finite element analysis of dental implants under different loading conditions. Computers in Biology and Medicine, 2018, no. 96, p. 157-165. ISSN: 0010-4825.
[citace_rtf] =>
[citace_bibtex] => @article{BUT146684,
author="Petr {Marcián} and Jan {Wolff} and Ladislava {Horáčková} and Jozef {Kaiser} and Tomáš {Zikmund} and Libor {Borák}",
title="Micro finite element analysis of dental implants under different loading conditions",
journal="Computers in Biology and Medicine",
year="2018",
number="96",
pages="157--165",
doi="10.1016/j.compbiomed.2018.03.012",
issn="0010-4825",
url="https://www.sciencedirect.com/science/article/pii/S0010482518300696"
}
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[poznamka_metriky] =>
[nazev_en] => Micro finite element analysis of dental implants under different loading conditions
[popis_en] => Osseointegration is paramount for the longevity of dental implants and is significantly influenced by biomechanical stimuli. The aim of the present study was to assess the micro-strain and displacement induced by loaded dental implants at different stages of osseointegration using finite element analysis (FEA). Computational models of two mandible segments with different trabecular densities were constructed using microCT data. Three different implant loading directions and two osseointegration stages were considered in the stress-strain analysis of the bone-implant assembly. The bony segments were analyzed using two approaches. The first approach was based on Mechanostat strain intervals and the second approach was based on tensile/compression yield strains. The results of this study revealed that bone surrounding dental implants is critically strained in cases when only a partial osseointegration is present and when an implant is loaded by buccolingual forces. In such cases, implants also encounter high stresses. Displacements of partially-osseointegrated implant are significantly larger than those of fully-osseointegrated implants. It can be concluded that the partial osseointegration is a potential risk in terms of implant longevity.
[klicova_slova_en] => Micro finite element analysis; Dental implants; Osseointegration; Stress intensity; Strain intensity
[vysledek_datum] => 2018-05-01T00:00:00+02:00
)
[14] => Array
(
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[vysledek_druh_id] => V_SOUHRN
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[nazev] => Reliability of highly integrated ceramic/polymer-based functional systems for electronic applications - Implementation of an homogenization methodology into a temperature cycling test simulation of a ceramic-based daisy chain system
[nazev_orig] => Reliability of highly integrated ceramic/polymer-based functional systems for electronic applications - Implementation of an homogenization methodology into a temperature cycling test simulation of a ceramic-based daisy chain system
[duvernost_udaju_id] => C
[popis] => This work introduces a methodology on how to incorporate complex inner metallic structure of LTCC (eventually PCB) components into an FE model in order to capture its influence on the surrounding critical parts such as solder joints or attached electronic components. To this end a homogenization technique, combining properties of several materials into effective properties of one “artificial” material, was utilized. For each element of the FE model, the effective elastic and thermal properties, obtained based upon the volume content of silver (eventually other material) in the volume of a given finite element, were calculated and prescribed. To demonstrate and quantify the influence of such homogenized properties of LTCC structure on the surrounding components, both versions of the LTCC components, i.e. bulk and homogenized, were subsequently subjected to the thermal cycle loading . The results show that the thermal cycle simulation of the system containing an LTCC with (i) bulk and (ii) homogenized properties deliver the same position of the critical solder joint between PCB and LTCC component. Nevertheless, significant stresses are induced inside the LTCC component considering the internal metallization, which might be responsible for its earlier failure in comparison with predictions made just based upon the bulk LTCC model.
[popis_orig] => This work introduces a methodology on how to incorporate complex inner metallic structure of LTCC (eventually PCB) components into an FE model in order to capture its influence on the surrounding critical parts such as solder joints or attached electronic components. To this end a homogenization technique, combining properties of several materials into effective properties of one “artificial” material, was utilized. For each element of the FE model, the effective elastic and thermal properties, obtained based upon the volume content of silver (eventually other material) in the volume of a given finite element, were calculated and prescribed. To demonstrate and quantify the influence of such homogenized properties of LTCC structure on the surrounding components, both versions of the LTCC components, i.e. bulk and homogenized, were subsequently subjected to the thermal cycle loading . The results show that the thermal cycle simulation of the system containing an LTCC with (i) bulk and (ii) homogenized properties deliver the same position of the critical solder joint between PCB and LTCC component. Nevertheless, significant stresses are induced inside the LTCC component considering the internal metallization, which might be responsible for its earlier failure in comparison with predictions made just based upon the bulk LTCC model.
[klicova_slova] => Homogenization, solder joint, creep behaviour, FE analysis, thermal loading.
[klicova_slova_orig] => Homogenization, solder joint, creep behaviour, FE analysis, thermal loading.
[url] =>
[oecd_obor_id] => 20302
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[citace_text] => ŠEVEČEK, O. Reliability of highly integrated ceramic/polymer-based functional systems for electronic applications - Implementation of an homogenization methodology into a temperature cycling test simulation of a ceramic-based daisy chain system. 2017. 17 p.
[citace_html] => ŠEVEČEK, O. Reliability of highly integrated ceramic/polymer-based functional systems for electronic applications - Implementation of an homogenization methodology into a temperature cycling test simulation of a ceramic-based daisy chain system. 2017. 17 p.
[citace_rtf] =>
[citace_bibtex] => @misc{BUT146870,
author="Oldřich {Ševeček}",
title="Reliability of highly integrated ceramic/polymer-based functional systems for electronic applications - Implementation of an homogenization methodology into a temperature cycling test simulation of a ceramic-based daisy chain system",
year="2017",
pages="17",
note="Summary research report"
}
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[oecd_tree_oblast_id] => 20000
[oecd_tree_oblast_nazev] => 2. Engineering and Technology
[oecd_tree_obor_id] => 20300
[oecd_tree_obor_nazev] => 2.3 Mechanical engineering
[oecd_tree_podobor_id] => 20302
[oecd_tree_podobor_nazev] => Applied mechanics
[poznamka_metriky] =>
[nazev_en] => Reliability of highly integrated ceramic/polymer-based functional systems for electronic applications - Implementation of an homogenization methodology into a temperature cycling test simulation of a ceramic-based daisy chain system
[popis_en] => This work introduces a methodology on how to incorporate complex inner metallic structure of LTCC (eventually PCB) components into an FE model in order to capture its influence on the surrounding critical parts such as solder joints or attached electronic components. To this end a homogenization technique, combining properties of several materials into effective properties of one “artificial” material, was utilized. For each element of the FE model, the effective elastic and thermal properties, obtained based upon the volume content of silver (eventually other material) in the volume of a given finite element, were calculated and prescribed. To demonstrate and quantify the influence of such homogenized properties of LTCC structure on the surrounding components, both versions of the LTCC components, i.e. bulk and homogenized, were subsequently subjected to the thermal cycle loading . The results show that the thermal cycle simulation of the system containing an LTCC with (i) bulk and (ii) homogenized properties deliver the same position of the critical solder joint between PCB and LTCC component. Nevertheless, significant stresses are induced inside the LTCC component considering the internal metallization, which might be responsible for its earlier failure in comparison with predictions made just based upon the bulk LTCC model.
[klicova_slova_en] => Homogenization, solder joint, creep behaviour, FE analysis, thermal loading.
[vysledek_datum] => 2017-10-30T00:00:00+01:00
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[base_page] => /veda/publikace
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[quotations] => MAJER, Z.; NÁHLÍK, L.; ŠTEGNEROVÁ, K.; HUTAŘ, P.; BERMEJO, R.
[title] => Study of Influence of Residual Stresses on Crack Propagation in Particulate Ceramic Composites
[typ] => PV
[year] => 2017
[id_vav] => 141076
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[1] => Array
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[quotations] => VĚCHET, S.; KREJSA, J.
[title] => Senzorická síť s topologií binárního stromu
[typ] => AV
[year] => 2017
[id_vav] => 141112
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[2] => Array
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[quotations] => MASINI, A.; ŠIŠKA, F.; ŠEVEČEK, O.; CHLUP, Z.; DLOUHÝ, I.
[title] => Elastic properties of multi-layered ceramic systems for SOCs
[typ] => PV
[year] => 2018
[id_vav] => 141135
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[3] => Array
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[quotations] => HUTAŘ, P.; PODUŠKA, J.; ŠMÍD, M.; KUBĚNA, I.; CHLUPOVÁ, A.; NÁHLÍK, L.; POLÁK, J.; KRUML, T.
[title] => Short fatigue crack behaviour under low cycle fatigue regime
[typ] => PV
[year] => 2017
[id_vav] => 141223
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[4] => Array
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[quotations] => MAJER, Z.; ŠTEGNEROVÁ, K.; HUTAŘ, P.; PLETZ, M.; BERMEJO, R.; NÁHLÍK, L.
[title] => Residual Lifetime Determination of Low Temperature Co-Fired Ceramics
[typ] => PV
[year] => 2017
[id_vav] => 141407
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[5] => Array
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[quotations] => NÁHLÍK, L.; MAJER, Z.; ŠTEGNEROVÁ, K.; HUTAŘ, P.
[title] => Lifetime Assessment of Particulate Ceramic Composite with Residual Stresses
[typ] => PV
[year] => 2018
[id_vav] => 141409
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[quotations] => ŠTEGNEROVÁ, K.; MAJER, Z.; HUTAŘ, P.; NÁHLÍK, L.
[title] => 3D Model of Crack Propagation in Particulate Ceramic Composite Containing Residual Stresses
[typ] => PV
[year] => 2018
[id_vav] => 141450
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[7] => Array
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[quotations] => OPLT, T.; POKORNÝ, P.; NÁHLÍK, L.; HUTAŘ, P.
[title] => The Effect of the Free Surface on the Singular Stress Field at the Fatigue Crack Front
[typ] => PV
[year] => 2017
[id_vav] => 142135
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[8] => Array
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[quotations] => SMILEK, J.; HADAŠ, Z.
[title] => Nositelné zařízení pro výrobu elektrické energie
[typ] => AV
[year] => 2019
[id_vav] => 142381
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[quotations] => WANG, M.; GONG, Y.; ALZINA, F.; SVOBODA, O.; BALLESTEROS, B.; TORRES, C.; XIAO, S.; HE, J.; ZHANG, Z.
[title] => Raman antenna effect from exciton–phonon coupling in organic semiconducting nanobelts
[typ] => PV
[year] => 2017
[id_vav] => 143260
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[10] => Array
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[quotations] => HÁJEK, P.; ŠVANCARA, P.; HORÁČEK, J.; ŠVEC, J.
[title] => Two-dimensional finite element model of vowel production: properties of self-oscillating vocal folds interacting with fluid flow
[typ] => PV
[year] => 2017
[id_vav] => 143390
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[quotations] => MUSIL, F.; BRABLC, M.
[title] => Modelling and Simulation of Vehicle Boot Door
[typ] => PV
[year] => 2017
[id_vav] => 144110
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[quotations] => KOTOUL, M.; SKALKA, P.
[title] => Applicability of the critical energy release rate for predicting the growth of a crack in nanoscale materials applying the strain gradient elasticity theory
[typ] => PV
[year] => 2017
[id_vav] => 145373
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[13] => Array
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[quotations] => MARCIÁN, P.; WOLFF, J.; HORÁČKOVÁ, L.; KAISER, J.; ZIKMUND, T.; BORÁK, L.
[title] => Micro finite element analysis of dental implants under different loading conditions
[typ] => PV
[year] => 2018
[id_vav] => 146684
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[14] => Array
(
[quotations] => ŠEVEČEK, O.
[title] => Reliability of highly integrated ceramic/polymer-based functional systems for electronic applications - Implementation of an homogenization methodology into a temperature cycling test simulation of a ceramic-based daisy chain system
[typ] => PX
[year] => 2017
[id_vav] => 146870
)
)
)