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[nazev] => Reliability of highly integrated ceramic/polymer-based functional systems for electronic applications
[nazev_orig] => Reliability of highly integrated ceramic/polymer-based functional systems for electronic applications
[duvernost_udaju_id] => C
[popis] => The work deals with FE modelling of LTCC "Building blocks" (ceramic plate with inbuilt square silver electrodes) subjected to 4 point bending and with prediction of their cracking. The aim is to explain fracture behaviour observed in the experiment and predict critical forces leading to specimen failure. To determine the critical force necessary for the crack initiation (upon combined thermal and mechanical stresses) a stress-energy coupled criterion is employed. The work also studies influence of the electrode position within the ceramic height and discusses two possible points of the crack origination – surface of the specimen and tip of the electrode and explains which spot is more convenient for the inception of the cracking.
[popis_orig] => The work deals with FE modelling of LTCC "Building blocks" (ceramic plate with inbuilt square silver electrodes) subjected to 4 point bending and with prediction of their cracking. The aim is to explain fracture behaviour observed in the experiment and predict critical forces leading to specimen failure. To determine the critical force necessary for the crack initiation (upon combined thermal and mechanical stresses) a stress-energy coupled criterion is employed. The work also studies influence of the electrode position within the ceramic height and discusses two possible points of the crack origination – surface of the specimen and tip of the electrode and explains which spot is more convenient for the inception of the cracking.
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[url] =>
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[citace_text] => ŠEVEČEK, O. Reliability of highly integrated ceramic/polymer-based functional systems for electronic applications. 2016. 11 p.
[citace_html] => ŠEVEČEK, O. Reliability of highly integrated ceramic/polymer-based functional systems for electronic applications. 2016. 11 p.
[citace_rtf] =>
[citace_bibtex] => @misc{BUT134603,
author="Oldřich {Ševeček}",
title="Reliability of highly integrated ceramic/polymer-based functional systems for electronic applications",
year="2016",
pages="11",
note="Summary research report"
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[nazev] => Selection of MEMS Accelerometers for Tilt Measurements
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[duvernost_udaju_id] => S
[popis] => In order to build a tilt sensor having a desired sensitivity and measuring range, one should select an appropriate type, orientation, and initial position of an accelerometer. Practical guidelines for an optimal selection of a particular micromachined accelerometer for a specific case of tilt measurement are provided.
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[citace_text] => Łuczak, S., Grepl,R. , Bodnicki, M. Selection of MEMS Accelerometers for Tilt Measurements. Journal of Sensors, 2017, vol. 2017, no. 9796146, p. 1-13. ISSN: 1687-7268.
[citace_html] => Łuczak, S., Grepl,R. , Bodnicki, M. Selection of MEMS Accelerometers for Tilt Measurements. Journal of Sensors, 2017, vol. 2017, no. 9796146, p. 1-13. ISSN: 1687-7268.
[citace_rtf] =>
[citace_bibtex] => @article{BUT135164,
author="Robert {Grepl}",
title="Selection of MEMS Accelerometers for Tilt Measurements",
journal="Journal of Sensors",
year="2017",
volume="2017",
number="9796146",
pages="1--13",
doi="10.1155/2017/9796146",
issn="1687-725X",
url="http://dx.doi.org/10.1155/2017/9796146"
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[nazev_en] => Selection of MEMS Accelerometers for Tilt Measurements
[popis_en] => In order to build a tilt sensor having a desired sensitivity and measuring range, one should select an appropriate type, orientation, and initial position of an accelerometer. Practical guidelines for an optimal selection of a particular micromachined accelerometer for a specific case of tilt measurement are provided.
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[nazev] => Segmentation of Human Motion Acceleration with Probabilistic Classifier
[nazev_orig] => Segmentation of Human Motion Acceleration with Probabilistic Classifier
[duvernost_udaju_id] => S
[popis] => This paper describes a method for signal segmentation in human motion analysis. Proposed
method uses a probabilistic change point estimator combined with a Trigg’s tracking signal for detection of
changes in a signal variation and segmentation to the subsections by these change points. Main usage of this
method is in fields of sport training or health condition monitoring but it can be also used in technical
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[popis_orig] => This paper describes a method for signal segmentation in human motion analysis. Proposed
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changes in a signal variation and segmentation to the subsections by these change points. Main usage of this
method is in fields of sport training or health condition monitoring but it can be also used in technical
monitoring.
[klicova_slova] => Signal segmentation, Change point detection, Motion analysis, Trigg’s tracking signal.
[klicova_slova_orig] => Signal segmentation, Change point detection, Motion analysis, Trigg’s tracking signal.
[url] =>
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[ins_ts] => 2025-09-22
[upd_ts] => 2025-09-22
[status] => 9
[identifikator] => ISBN 978-80-214-5497-2
[identifikator_popis] => ISBN - ENGINEERING MECHANICS 2017
[riv_dodavka_id] => 1864
[riv_dodavka_oznaceni] => RIV18-TA0-26510___
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[citace_text] => KUMPÁN, P. Segmentation of Human Motion Acceleration with Probabilistic Classifier. In ENGINEERING MECHANICS 2017. 2017. Brno: Brno University of Technology, 2017. p. 566-569. ISBN: 978-80-214-5497-2.
[citace_html] => KUMPÁN, P. Segmentation of Human Motion Acceleration with Probabilistic Classifier. In ENGINEERING MECHANICS 2017. 2017. Brno: Brno University of Technology, 2017. p. 566-569. ISBN: 978-80-214-5497-2.
[citace_rtf] =>
[citace_bibtex] => @inproceedings{BUT136250,
author="Pavel {Kumpán}",
title="Segmentation of Human Motion Acceleration with Probabilistic Classifier",
booktitle="ENGINEERING MECHANICS 2017",
year="2017",
series="2017",
number="1",
pages="566--569",
publisher="Brno University of Technology",
address="Brno",
isbn="978-80-214-5497-2"
}
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[nazev_en] => Segmentation of Human Motion Acceleration with Probabilistic Classifier
[popis_en] => This paper describes a method for signal segmentation in human motion analysis. Proposed
method uses a probabilistic change point estimator combined with a Trigg’s tracking signal for detection of
changes in a signal variation and segmentation to the subsections by these change points. Main usage of this
method is in fields of sport training or health condition monitoring but it can be also used in technical
monitoring.
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[nazev] => PARAMETER ESTIMATION FOR ENGINEERS: A NEW TOOL FOR EFFECTIVE SEARCH FOR SIMULINK MODEL PARAMETERS
[nazev_orig] => PARAMETER ESTIMATION FOR ENGINEERS: A NEW TOOL FOR EFFECTIVE SEARCH FOR SIMULINK MODEL PARAMETERS
[duvernost_udaju_id] => S
[popis] => An estimation of Simulink model parameters is very important problem in field of system
identification in mechatronics. This paper describes features and advantages of the New Parameter
Estimation Tool developed with respect to particular engineering needs. Among other things, the tool allows
to use the arbitrary combination of a model and a measured data for the construction of cost function of the
optimization process. This enables to formulate various tasks briefly outlined in this paper including
comparison of several candidate models or performing estimations of models with shared parameters.
Furthermore, all temporary simulation results are stored and later can be browsed and viewed by user. This
enables to get very clear visual insight into the estimation problem and especially increases the usefulness of
the Brute force method use. Finally, the tool allows to cope actively with the problem of initial guesses of an
optimization method. As a result, user can automate and control parameter estimations for time-consuming
and demanding problems
[popis_orig] => An estimation of Simulink model parameters is very important problem in field of system
identification in mechatronics. This paper describes features and advantages of the New Parameter
Estimation Tool developed with respect to particular engineering needs. Among other things, the tool allows
to use the arbitrary combination of a model and a measured data for the construction of cost function of the
optimization process. This enables to formulate various tasks briefly outlined in this paper including
comparison of several candidate models or performing estimations of models with shared parameters.
Furthermore, all temporary simulation results are stored and later can be browsed and viewed by user. This
enables to get very clear visual insight into the estimation problem and especially increases the usefulness of
the Brute force method use. Finally, the tool allows to cope actively with the problem of initial guesses of an
optimization method. As a result, user can automate and control parameter estimations for time-consuming
and demanding problems
[klicova_slova] => Parameter estimation, Simulink, Optimization, Software tool.
[klicova_slova_orig] => Parameter estimation, Simulink, Optimization, Software tool.
[url] => http://www.engmech.cz/im/doc/EM2017_proceedings_all.pdf
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[originalni_jazyk] => en
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[schvaleno] => 2018-07-24
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[druh_popis] => Paper in proceedings (conference paper)
[stav] => Approved
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[upravil] => Informační systém Automat
[ins_uid] => 999999
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[ins_ts] => 2025-09-22
[upd_ts] => 2025-09-22
[status] => 9
[identifikator] => ISBN 978-80-214-5497-2
[identifikator_popis] => ISBN - ENGINEERING MECHANICS 2017
[riv_dodavka_id] => 1864
[riv_dodavka_oznaceni] => RIV18-TA0-26510___
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[citace_text] => APPEL, M.; GREPL, R. PARAMETER ESTIMATION FOR ENGINEERS: A NEW TOOL FOR EFFECTIVE SEARCH FOR SIMULINK MODEL PARAMETERS. In ENGINEERING MECHANICS 2017. 2017. Brno: Institute of Solid Mechanics, Mechatronics and Biomechanics, Faculty of Mechanical Engineering, Brno University of Technology, 2017. p. 90-93. ISBN: 978-80-214-5497-2.
[citace_html] => APPEL, M.; GREPL, R. PARAMETER ESTIMATION FOR ENGINEERS: A NEW TOOL FOR EFFECTIVE SEARCH FOR SIMULINK MODEL PARAMETERS. In ENGINEERING MECHANICS 2017. 2017. Brno: Institute of Solid Mechanics, Mechatronics and Biomechanics, Faculty of Mechanical Engineering, Brno University of Technology, 2017. p. 90-93. ISBN: 978-80-214-5497-2.
[citace_rtf] =>
[citace_bibtex] => @inproceedings{BUT136310,
author="Martin {Appel} and Robert {Grepl}",
title="PARAMETER ESTIMATION FOR ENGINEERS: A NEW TOOL FOR EFFECTIVE SEARCH FOR SIMULINK MODEL PARAMETERS",
booktitle="ENGINEERING MECHANICS 2017",
year="2017",
series="2017",
pages="90--93",
publisher="Institute of Solid Mechanics, Mechatronics and Biomechanics, Faculty of Mechanical Engineering, Brno University of Technology",
address="Brno",
isbn="978-80-214-5497-2",
url="http://www.engmech.cz/im/doc/EM2017_proceedings_all.pdf"
}
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[poznamka_metriky] =>
[nazev_en] => PARAMETER ESTIMATION FOR ENGINEERS: A NEW TOOL FOR EFFECTIVE SEARCH FOR SIMULINK MODEL PARAMETERS
[popis_en] => An estimation of Simulink model parameters is very important problem in field of system
identification in mechatronics. This paper describes features and advantages of the New Parameter
Estimation Tool developed with respect to particular engineering needs. Among other things, the tool allows
to use the arbitrary combination of a model and a measured data for the construction of cost function of the
optimization process. This enables to formulate various tasks briefly outlined in this paper including
comparison of several candidate models or performing estimations of models with shared parameters.
Furthermore, all temporary simulation results are stored and later can be browsed and viewed by user. This
enables to get very clear visual insight into the estimation problem and especially increases the usefulness of
the Brute force method use. Finally, the tool allows to cope actively with the problem of initial guesses of an
optimization method. As a result, user can automate and control parameter estimations for time-consuming
and demanding problems
[klicova_slova_en] => Parameter estimation, Simulink, Optimization, Software tool.
[vysledek_datum] => 2017-05-18T00:00:00+02:00
)
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(
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[nazev] => Effects of Turbulence in FE Model of Human Vocal Folds Self-oscillation
[nazev_orig] => Effects of Turbulence in FE Model of Human Vocal Folds Self-oscillation
[duvernost_udaju_id] => S
[popis] => The purpose of the study is to determine whether a turbulence model in fluid flow calculation affects the vocal folds (VF) vibration and the acoustics of human vocal tract (VT). The objective is examined using a two-dimensional (2D) finite element (FE) model of the fluid-structure-acoustic interaction for self- sustained oscillations of the VF. The FE model consists of the models of the VF, the trachea and a simplified model of the human VT. The developed FE model includes large deformations of the VF tissue and VF contact interrupting the airflow during glottis closure. The airflow is modelled by the unsteady viscous compressible Navier-Stokes equations, without and with the Shear Stress Transport (SST) turbulence model. Fluid-structure interaction (FSI) and morphing of the fluid mesh are realized using Arbitrary Lagrangian- Eulerian (ALE) approach. The method is applied on the FE model of the VT shaped for the Czech vowel [a:]. Also effect of varying stiffness of the superficial lamina propria (SLP) is analyzed. The numerical simulations showed that considering of the turbulence affects mainly higher frequencies apparent in a frequency spectrum of the VT acoustics.
[popis_orig] => The purpose of the study is to determine whether a turbulence model in fluid flow calculation affects the vocal folds (VF) vibration and the acoustics of human vocal tract (VT). The objective is examined using a two-dimensional (2D) finite element (FE) model of the fluid-structure-acoustic interaction for self- sustained oscillations of the VF. The FE model consists of the models of the VF, the trachea and a simplified model of the human VT. The developed FE model includes large deformations of the VF tissue and VF contact interrupting the airflow during glottis closure. The airflow is modelled by the unsteady viscous compressible Navier-Stokes equations, without and with the Shear Stress Transport (SST) turbulence model. Fluid-structure interaction (FSI) and morphing of the fluid mesh are realized using Arbitrary Lagrangian- Eulerian (ALE) approach. The method is applied on the FE model of the VT shaped for the Czech vowel [a:]. Also effect of varying stiffness of the superficial lamina propria (SLP) is analyzed. The numerical simulations showed that considering of the turbulence affects mainly higher frequencies apparent in a frequency spectrum of the VT acoustics.
[klicova_slova] => Simulation of phonation; SST turbulence model; Fluid-structure-acoustic interaction; Finite element method; Biomechanics of voice
[klicova_slova_orig] => Simulation of phonation; SST turbulence model; Fluid-structure-acoustic interaction; Finite element method; Biomechanics of voice
[url] => http://apps.webofknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch&qid=1&SID=Q1m7oHnd8iQOER6nsux&page=1&doc=1
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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 978-80-214-5497-2 ISSN 1805-8248
[identifikator_popis] => ISBN - Engineering Mechanics 2017 ISSN - Engineering Mechanics (CZ)
[riv_dodavka_id] => 1864
[riv_dodavka_oznaceni] => RIV18-TA0-26510___
[riv_dodavka_rok] => 2018
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[citace_text] => HÁJEK, P.; ŠVANCARA, P.; HORÁČEK, J.; ŠVEC, J. Effects of Turbulence in FE Model of Human Vocal Folds Self-oscillation. In Engineering Mechanics 2017. Engineering Mechanics. Svratka: Institute of Thermomechanics, Academy of Sciences of the Czech Republic, v. v. i., Prague, 2017. no. 1, p. 366-369. ISBN: 978-80-214-5497-2. ISSN: 1805-8248.
[citace_html] => HÁJEK, P.; ŠVANCARA, P.; HORÁČEK, J.; ŠVEC, J. Effects of Turbulence in FE Model of Human Vocal Folds Self-oscillation. In Engineering Mechanics 2017. Engineering Mechanics. Svratka: Institute of Thermomechanics, Academy of Sciences of the Czech Republic, v. v. i., Prague, 2017. no. 1, p. 366-369. ISBN: 978-80-214-5497-2. ISSN: 1805-8248.
[citace_rtf] =>
[citace_bibtex] => @inproceedings{BUT136512,
author="Petr {Hájek} and Pavel {Švancara} and Jaromír {Horáček} and Jan G. {Švec}",
title="Effects of Turbulence in FE Model of Human Vocal Folds Self-oscillation",
booktitle="Engineering Mechanics 2017",
year="2017",
journal="Engineering Mechanics",
volume="23",
number="1",
pages="366--369",
publisher="Institute of Thermomechanics, Academy of Sciences of the Czech Republic, v. v. i., Prague",
address="Svratka",
isbn="978-80-214-5497-2",
issn="1805-8248",
url="http://apps.webofknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch&qid=1&SID=Q1m7oHnd8iQOER6nsux&page=1&doc=1"
}
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[poznamka_metriky] =>
[nazev_en] => Effects of Turbulence in FE Model of Human Vocal Folds Self-oscillation
[popis_en] => The purpose of the study is to determine whether a turbulence model in fluid flow calculation affects the vocal folds (VF) vibration and the acoustics of human vocal tract (VT). The objective is examined using a two-dimensional (2D) finite element (FE) model of the fluid-structure-acoustic interaction for self- sustained oscillations of the VF. The FE model consists of the models of the VF, the trachea and a simplified model of the human VT. The developed FE model includes large deformations of the VF tissue and VF contact interrupting the airflow during glottis closure. The airflow is modelled by the unsteady viscous compressible Navier-Stokes equations, without and with the Shear Stress Transport (SST) turbulence model. Fluid-structure interaction (FSI) and morphing of the fluid mesh are realized using Arbitrary Lagrangian- Eulerian (ALE) approach. The method is applied on the FE model of the VT shaped for the Czech vowel [a:]. Also effect of varying stiffness of the superficial lamina propria (SLP) is analyzed. The numerical simulations showed that considering of the turbulence affects mainly higher frequencies apparent in a frequency spectrum of the VT acoustics.
[klicova_slova_en] => Simulation of phonation; SST turbulence model; Fluid-structure-acoustic interaction; Finite element method; Biomechanics of voice
[vysledek_datum] => 2017-05-15T00:00:00+02:00
)
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(
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[nazev] => Evaluating Different Shapes of Cranial Fixation Mini-plates Using Finite Element Method
[nazev_orig] => Evaluating Different Shapes of Cranial Fixation Mini-plates Using Finite Element Method
[duvernost_udaju_id] => S
[popis] => Medical grade 3D printing offers the possibility to manufacture patient-specific implants to treat cranial defects. The performance of the implant assembly depends on many factors, such as material, thickness, size and manufacturing accuracy. A significant factor in the stability and success of the assembly is the fixation method. Cranial implants are usually fixed to the skull by means of mini-plates. Biomechanical assessment of fixing the implant to the skull might be helpful not only for mini-plate design but might be beneficial also for the surgeons. In this study, four different mini-plate designs were analyzed and compared based on the stress-strain analysis of one cranial implant fixed at three locations by mini-plates. Computational simulations were done using Finite Element Method.
[popis_orig] => Medical grade 3D printing offers the possibility to manufacture patient-specific implants to treat cranial defects. The performance of the implant assembly depends on many factors, such as material, thickness, size and manufacturing accuracy. A significant factor in the stability and success of the assembly is the fixation method. Cranial implants are usually fixed to the skull by means of mini-plates. Biomechanical assessment of fixing the implant to the skull might be helpful not only for mini-plate design but might be beneficial also for the surgeons. In this study, four different mini-plate designs were analyzed and compared based on the stress-strain analysis of one cranial implant fixed at three locations by mini-plates. Computational simulations were done using Finite Element Method.
[klicova_slova] => Cranial implants; Fixation mini-plates; FEA; Polymethyl Methacrylate; Stress-strain analysis
[klicova_slova_orig] => Cranial implants; Fixation mini-plates; FEA; Polymethyl Methacrylate; Stress-strain analysis
[url] => https://link.springer.com/chapter/10.1007/978-981-10-5122-7_187
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[ins_ts] => 2025-09-22
[upd_ts] => 2025-09-22
[status] => 9
[identifikator] => ISSN 1680-0737
[identifikator_popis] => ISSN - IFMBE Proceedings (FR)
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[riv_dodavka_oznaceni] => RIV18-TA0-26510___
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[citace_text] => CHAMRAD, J.; MARCIÁN, P.; NARRA, N.; BORÁK, L. Evaluating Different Shapes of Cranial Fixation Mini-plates Using Finite Element Method. In EMBEC’17 & NBC’17. IFMBE Proceedings. Springer, 2017. no. 65, p. 747-750. ISSN: 1680-0737.
[citace_html] => CHAMRAD, J.; MARCIÁN, P.; NARRA, N.; BORÁK, L. Evaluating Different Shapes of Cranial Fixation Mini-plates Using Finite Element Method. In EMBEC’17 & NBC’17. IFMBE Proceedings. Springer, 2017. no. 65, p. 747-750. ISSN: 1680-0737.
[citace_rtf] =>
[citace_bibtex] => @inproceedings{BUT137072,
author="Jakub {Chamrad} and Petr {Marcián} and Nathaniel {Narra} and Libor {Borák}",
title="Evaluating Different Shapes of Cranial Fixation Mini-plates Using Finite Element Method",
booktitle="EMBEC’17 & NBC’17",
year="2017",
journal="IFMBE Proceedings",
volume="1",
number="65",
pages="747--750",
publisher="Springer",
doi="10.1007/978-981-10-5122-7\{_}187",
issn="1680-0737",
url="https://link.springer.com/chapter/10.1007/978-981-10-5122-7_187"
}
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[nazev_en] => Evaluating Different Shapes of Cranial Fixation Mini-plates Using Finite Element Method
[popis_en] => Medical grade 3D printing offers the possibility to manufacture patient-specific implants to treat cranial defects. The performance of the implant assembly depends on many factors, such as material, thickness, size and manufacturing accuracy. A significant factor in the stability and success of the assembly is the fixation method. Cranial implants are usually fixed to the skull by means of mini-plates. Biomechanical assessment of fixing the implant to the skull might be helpful not only for mini-plate design but might be beneficial also for the surgeons. In this study, four different mini-plate designs were analyzed and compared based on the stress-strain analysis of one cranial implant fixed at three locations by mini-plates. Computational simulations were done using Finite Element Method.
[klicova_slova_en] => Cranial implants; Fixation mini-plates; FEA; Polymethyl Methacrylate; Stress-strain analysis
[vysledek_datum] => 2017-06-13T00:00:00+02:00
)
[6] => Array
(
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[nazev] => Finite element analysis of 6 large PMMA skull reconstructions: A multi-criteria evaluation approach
[nazev_orig] => Finite element analysis of 6 large PMMA skull reconstructions: A multi-criteria evaluation approach
[duvernost_udaju_id] => S
[popis] => In this study 6 pre-operative designs for PMMA based reconstructions of cranial defects were evaluated for their mechanical robustness using finite element modeling. Clinical experience and engineering principles were employed to create multiple plan options, which were subsequently computationally analyzed for mechanically relevant parameters under 50N loads: stress, strain and deformation in various components of the assembly. The factors assessed were: defect size, location and shape. The major variable in the cranioplasty assembly design was the arrangement of the fixation plates. An additional study variable introduced was the location of the 50N load within the implant area. It was found that in smaller defects, it was simpler to design a symmetric distribution of plates and under limited variability in load location it was possible to design an optimal for expected loads. However, for very large defects with complex shapes, the variability in the load locations introduces complications to the intuitive design of the optimal assembly. The study shows that it can be beneficial to incorporate multi design computational analyses to decide upon the most optimal plan for a clinical case.
[popis_orig] => In this study 6 pre-operative designs for PMMA based reconstructions of cranial defects were evaluated for their mechanical robustness using finite element modeling. Clinical experience and engineering principles were employed to create multiple plan options, which were subsequently computationally analyzed for mechanically relevant parameters under 50N loads: stress, strain and deformation in various components of the assembly. The factors assessed were: defect size, location and shape. The major variable in the cranioplasty assembly design was the arrangement of the fixation plates. An additional study variable introduced was the location of the 50N load within the implant area. It was found that in smaller defects, it was simpler to design a symmetric distribution of plates and under limited variability in load location it was possible to design an optimal for expected loads. However, for very large defects with complex shapes, the variability in the load locations introduces complications to the intuitive design of the optimal assembly. The study shows that it can be beneficial to incorporate multi design computational analyses to decide upon the most optimal plan for a clinical case.
[klicova_slova] => Cranioplasty; FEM; PMMA; Cranial implant; Mechanical properties; plate distribution; fixation geometry
[klicova_slova_orig] => Cranioplasty; FEM; PMMA; Cranial implant; Mechanical properties; plate distribution; fixation geometry
[url] => https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0179325
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[vycet_osob] => RIDWAN-PRAMANA, A.; MARCIÁN, P.; BORÁK, L.; NARRA, N.; FOROUZANFAR, T.; WOLFF, J.
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[poznamka] => http://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0179325
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[kod_doi] => 10.1371/journal.pone.0179325
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[korespondencni_autor] =>
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[stav] => Approved
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[vlozil] => Informační systém Automat
[upravil] => Informační systém Automat
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[ins_ts] => 2025-09-22
[upd_ts] => 2025-09-22
[status] => 9
[identifikator] => ISSN 1932-6203
[identifikator_popis] => ISSN - PLoS One (US)
[riv_dodavka_id] => 3114
[riv_dodavka_oznaceni] => RIV18-GA0-26210___
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[citace_text] => RIDWAN-PRAMANA, A.; MARCIÁN, P.; BORÁK, L.; NARRA, N.; FOROUZANFAR, T.; WOLFF, J. Finite element analysis of 6 large PMMA skull reconstructions: A multi-criteria evaluation approach. PLoS One, 2017, vol. 12, no. 6, p. 1-16. ISSN: 1932-6203.
[citace_html] => RIDWAN-PRAMANA, A.; MARCIÁN, P.; BORÁK, L.; NARRA, N.; FOROUZANFAR, T.; WOLFF, J. Finite element analysis of 6 large PMMA skull reconstructions: A multi-criteria evaluation approach. PLoS One, 2017, vol. 12, no. 6, p. 1-16. ISSN: 1932-6203.
[citace_rtf] =>
[citace_bibtex] => @article{BUT137080,
author="Angela {Ridwan-Pramana} and Petr {Marcián} and Libor {Borák} and Nathaniel {Narra} and Tim {Forouzanfar} and Jan {Wolff}",
title="Finite element analysis of 6 large PMMA skull reconstructions: A multi-criteria evaluation approach",
journal="PLoS One",
year="2017",
volume="12",
number="6",
pages="1--16",
doi="10.1371/journal.pone.0179325",
issn="1932-6203",
url="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0179325"
}
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[poznamka_metriky] =>
[nazev_en] => Finite element analysis of 6 large PMMA skull reconstructions: A multi-criteria evaluation approach
[popis_en] => In this study 6 pre-operative designs for PMMA based reconstructions of cranial defects were evaluated for their mechanical robustness using finite element modeling. Clinical experience and engineering principles were employed to create multiple plan options, which were subsequently computationally analyzed for mechanically relevant parameters under 50N loads: stress, strain and deformation in various components of the assembly. The factors assessed were: defect size, location and shape. The major variable in the cranioplasty assembly design was the arrangement of the fixation plates. An additional study variable introduced was the location of the 50N load within the implant area. It was found that in smaller defects, it was simpler to design a symmetric distribution of plates and under limited variability in load location it was possible to design an optimal for expected loads. However, for very large defects with complex shapes, the variability in the load locations introduces complications to the intuitive design of the optimal assembly. The study shows that it can be beneficial to incorporate multi design computational analyses to decide upon the most optimal plan for a clinical case.
[klicova_slova_en] => Cranioplasty; FEM; PMMA; Cranial implant; Mechanical properties; plate distribution; fixation geometry
[vysledek_datum] => 2017-06-13T00:00:00+02:00
)
[7] => Array
(
[vysledek_id] => 137250
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[nazev] => Crack bridging modelling in Bioglass ®based scaffolds reinforced by poly-vinyl alcohol/microfibrillated cellulose composite coating
[nazev_orig] => Crack bridging modelling in Bioglass ®based scaffolds reinforced by poly-vinyl alcohol/microfibrillated cellulose composite coating
[duvernost_udaju_id] => S
[popis] => The paper deals with crack bridging modelling in Bioglass ®based scaffolds due the presence of a spe- cial polymer coating. This includes a careful modelling of the scaffold which is based on x-ray computed micro-tomography (micro-CT) scans and identification of bridging mechanism with the aid of extensive fractographic observations of coated, broken struts. A replacement of the real structure of scaffold by a periodic model utilizing Kelvin cell whose size corresponds to the mean cell size of the real foam is discussed. The struts of the idealized foam are modelled using the beam elements. A detailed computa- tional analysis of crack bridging due to coating film fibrils under plane strain conditions is presented and an improvement of fracture resistance of coated scaffolds is explained.
[popis_orig] => The paper deals with crack bridging modelling in Bioglass ®based scaffolds due the presence of a spe- cial polymer coating. This includes a careful modelling of the scaffold which is based on x-ray computed micro-tomography (micro-CT) scans and identification of bridging mechanism with the aid of extensive fractographic observations of coated, broken struts. A replacement of the real structure of scaffold by a periodic model utilizing Kelvin cell whose size corresponds to the mean cell size of the real foam is discussed. The struts of the idealized foam are modelled using the beam elements. A detailed computa- tional analysis of crack bridging due to coating film fibrils under plane strain conditions is presented and an improvement of fracture resistance of coated scaffolds is explained.
[klicova_slova] => Irregular foam structure; Voronoi tessellation; FEM; Polymer coating; Crack bridging
[klicova_slova_orig] => Irregular foam structure; Voronoi tessellation; FEM; Polymer coating; Crack bridging
[url] => http://www.sciencedirect.com.ezproxy.lib.vutbr.cz/science/article/pii/S0167663616301685
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[nadrazena_soucast_zkratka] => FME
[nadrazena_soucast_nazev] => Faculty of Mechanical Engineering
[originalni_jazyk] => en
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[vycet_osob] => KOTOUL, M.; SKALKA, P.; ŠEVEČEK, O.; BERTOLLA, L.; MERTENS, J.;MARCIÁN, P.; CHAWLA, N.
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[ins_ts] => 2025-09-22
[upd_ts] => 2025-09-22
[status] => 9
[identifikator] => ISSN 0167-6636
[identifikator_popis] => ISSN - MECHANICS OF MATERIALS (NL)
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[riv_dodavka_oznaceni] => RIV18-TA0-26510___
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[citace_text] => KOTOUL, M.; SKALKA, P.; ŠEVEČEK, O.; BERTOLLA, L.; MERTENS, J.;MARCIÁN, P.; CHAWLA, N. Crack bridging modelling in Bioglass ®based scaffolds reinforced by poly-vinyl alcohol/microfibrillated cellulose composite coating. MECHANICS OF MATERIALS, 2017, vol. 110, no. 1, p. 16-28. ISSN: 0167-6636.
[citace_html] => KOTOUL, M.; SKALKA, P.; ŠEVEČEK, O.; BERTOLLA, L.; MERTENS, J.;MARCIÁN, P.; CHAWLA, N. Crack bridging modelling in Bioglass ®based scaffolds reinforced by poly-vinyl alcohol/microfibrillated cellulose composite coating. MECHANICS OF MATERIALS, 2017, vol. 110, no. 1, p. 16-28. ISSN: 0167-6636.
[citace_rtf] =>
[citace_bibtex] => @article{BUT137250,
author="KOTOUL, M. and SKALKA, P. and ŠEVEČEK, O. and BERTOLLA, L. and MERTENS, J. and MARCIÁN, P. and CHAWLA, N.",
title="Crack bridging modelling in Bioglass ®based scaffolds reinforced by poly-vinyl alcohol/microfibrillated cellulose composite coating",
journal="MECHANICS OF MATERIALS",
year="2017",
volume="110",
number="1",
pages="16--28",
doi="10.1016/j.mechmat.2017.04.004",
issn="0167-6636",
url="http://www.sciencedirect.com.ezproxy.lib.vutbr.cz/science/article/pii/S0167663616301685"
}
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[oecd_tree_podobor_nazev] => Audio engineering, reliability analysis
[poznamka_metriky] =>
[nazev_en] => Crack bridging modelling in Bioglass ®based scaffolds reinforced by poly-vinyl alcohol/microfibrillated cellulose composite coating
[popis_en] => The paper deals with crack bridging modelling in Bioglass ®based scaffolds due the presence of a spe- cial polymer coating. This includes a careful modelling of the scaffold which is based on x-ray computed micro-tomography (micro-CT) scans and identification of bridging mechanism with the aid of extensive fractographic observations of coated, broken struts. A replacement of the real structure of scaffold by a periodic model utilizing Kelvin cell whose size corresponds to the mean cell size of the real foam is discussed. The struts of the idealized foam are modelled using the beam elements. A detailed computa- tional analysis of crack bridging due to coating film fibrils under plane strain conditions is presented and an improvement of fracture resistance of coated scaffolds is explained.
[klicova_slova_en] => Irregular foam structure; Voronoi tessellation; FEM; Polymer coating; Crack bridging
[vysledek_datum] => 2017-04-19T00:00:00+02:00
)
[8] => Array
(
[vysledek_id] => 137783
[vysledek_druh_id] => ARTWOS
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[nazev] => Determination of the bonding strength in solid oxide fuel cells’ interfaces by Schwickerath crack initiation test
[nazev_orig] => Determination of the bonding strength in solid oxide fuel cells’ interfaces by Schwickerath crack initiation test
[duvernost_udaju_id] => S
[popis] => An adaptation of the Schwickerath crack initiation test (ISO 9693) was used to determine the bondingstrength between an anode support and three different cathodes with a solid oxide fuel cell interconnect.Interfacial elemental characterization of the interfaces was carried out by SEM/EDS analysis on frac-ture surfaces to investigate the bonding mechanisms. SEM/EDS of fresh fractures were also performedto determine the cohesion/adhesion mechanism of bonding. Calculations of the residual stresses weredetermined by finite element simulation using ANSYS, based on thermo-mechanical properties of thematerials obtained by measurement, calculation or literature.
[popis_orig] => An adaptation of the Schwickerath crack initiation test (ISO 9693) was used to determine the bondingstrength between an anode support and three different cathodes with a solid oxide fuel cell interconnect.Interfacial elemental characterization of the interfaces was carried out by SEM/EDS analysis on frac-ture surfaces to investigate the bonding mechanisms. SEM/EDS of fresh fractures were also performedto determine the cohesion/adhesion mechanism of bonding. Calculations of the residual stresses weredetermined by finite element simulation using ANSYS, based on thermo-mechanical properties of thematerials obtained by measurement, calculation or literature.
[klicova_slova] => Schwickerath; crack-initiation test; Three-point bending test; SOFC interfaces; Metal-ceramic bond strength
[klicova_slova_orig] => Schwickerath; crack-initiation test; Three-point bending test; SOFC interfaces; Metal-ceramic bond strength
[url] =>
[oecd_obor_id] => 20504
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[odpovedny_utvar_nazev] => Institute of Solid Mechanics, Mechatronics and Biomechanics
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[nadrazena_soucast_id] => 4
[nadrazena_soucast_zkratka] => FME
[nadrazena_soucast_nazev] => Faculty of Mechanical Engineering
[originalni_jazyk] => en
[schvalil_id] => 17485
[schvaleno] => 2017-07-13
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[slozka_id] => 103759
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[vycet_osob] => BOCCACCINI, D.; ŠEVEČEK, O.; FRANDSEN, H.; DLOUHÝ, I.; MOLIN, S.; HJELM, J.; CANNIO, M.; HENDRIKSEN, P.
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[druh_popis] => Peer-reviewed article included in Web of Science database as as an “Article”, “Review” or “Letter”
[stav] => Approved
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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
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[identifikator] => ISSN 0955-2219
[identifikator_popis] => ISSN - Journal of the European Ceramic Society (GB)
[riv_dodavka_id] => 1864
[riv_dodavka_oznaceni] => RIV18-TA0-26510___
[riv_dodavka_rok] => 2018
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[citace_text] => BOCCACCINI, D.; ŠEVEČEK, O.; FRANDSEN, H.; DLOUHÝ, I.; MOLIN, S.; HJELM, J.; CANNIO, M.; HENDRIKSEN, P. Determination of the bonding strength in solid oxide fuel cells’ interfaces by Schwickerath crack initiation test. Journal of the European Ceramic Society, 2017, vol. 2017, no. 37, p. 3565-3578. ISSN: 0955-2219.
[citace_html] => BOCCACCINI, D.; ŠEVEČEK, O.; FRANDSEN, H.; DLOUHÝ, I.; MOLIN, S.; HJELM, J.; CANNIO, M.; HENDRIKSEN, P. Determination of the bonding strength in solid oxide fuel cells’ interfaces by Schwickerath crack initiation test. Journal of the European Ceramic Society, 2017, vol. 2017, no. 37, p. 3565-3578. ISSN: 0955-2219.
[citace_rtf] =>
[citace_bibtex] => @article{BUT137783,
author="Dino {Boccaccini} and Oldřich {Ševeček} and Henrik Lund {Frandsen} and Ivo {Dlouhý} and Sebastian {Molin} and Benoit {Charlas} and Johan {Hjelm} and Maria {Cannio} and Peter Vang {Hendriksen}",
title="Determination of the bonding strength in solid oxide fuel cells’ interfaces by Schwickerath crack initiation test",
journal="Journal of the European Ceramic Society",
year="2017",
volume="2017",
number="37",
pages="3565--3578",
doi="10.1016/j.jeurceramsoc.2017.04.018",
issn="0955-2219"
}
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[poznamka_metriky] =>
[nazev_en] => Determination of the bonding strength in solid oxide fuel cells’ interfaces by Schwickerath crack initiation test
[popis_en] => An adaptation of the Schwickerath crack initiation test (ISO 9693) was used to determine the bondingstrength between an anode support and three different cathodes with a solid oxide fuel cell interconnect.Interfacial elemental characterization of the interfaces was carried out by SEM/EDS analysis on frac-ture surfaces to investigate the bonding mechanisms. SEM/EDS of fresh fractures were also performedto determine the cohesion/adhesion mechanism of bonding. Calculations of the residual stresses weredetermined by finite element simulation using ANSYS, based on thermo-mechanical properties of thematerials obtained by measurement, calculation or literature.
[klicova_slova_en] => Schwickerath; crack-initiation test; Three-point bending test; SOFC interfaces; Metal-ceramic bond strength
[vysledek_datum] => 2017-04-21T00:00:00+02:00
)
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(
[vysledek_id] => 138160
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[nazev] => Bone Remodeling Algorithm Incorporating Various Quantities as Mechanical Stimulus and Assuming Initial Microcrack in Bone
[nazev_orig] => Bone Remodeling Algorithm Incorporating Various Quantities as Mechanical Stimulus and Assuming Initial Microcrack in Bone
[duvernost_udaju_id] => S
[popis] => It is widely accepted that bones have the ability to adapt to new biomechanical environment by changing their material properties, geometry and inner architecture. Bones have also an exceptional ability to self-repair, to remove microcracks and to prevent the bone damage caused by the fatigue failure. These abilities are enabled through coupled processes of bone resorption and bone formation, the processes collectively referred to as bone remodeling. Numerous studies have shown that bone remodeling is governed by combination of mechanical stimulus (strains) and its frequency, both sensed by sensor cells (osteocytes). Through mechanotransduction, the stimulus is transmitted to actor cells (osteoclasts, osteoblasts) that actually do the bone resorption or formation. Several theories have been proposed to predict bone remodeling and several finite-element-based algorithms have been introduced. The vast majority of them uses strain energy density as the mechanical stimulus. The purpose of this paper is to investigate and discuss the applicability of also other strain-based representations of the mechanical stimulus in simulations of remodeling of bone with an initial microcrack. The need for developing more reliable models is essential for both clinicians and engineers who are interested, for instance, in prediction of bone performance when various implants are involved.
[popis_orig] => It is widely accepted that bones have the ability to adapt to new biomechanical environment by changing their material properties, geometry and inner architecture. Bones have also an exceptional ability to self-repair, to remove microcracks and to prevent the bone damage caused by the fatigue failure. These abilities are enabled through coupled processes of bone resorption and bone formation, the processes collectively referred to as bone remodeling. Numerous studies have shown that bone remodeling is governed by combination of mechanical stimulus (strains) and its frequency, both sensed by sensor cells (osteocytes). Through mechanotransduction, the stimulus is transmitted to actor cells (osteoclasts, osteoblasts) that actually do the bone resorption or formation. Several theories have been proposed to predict bone remodeling and several finite-element-based algorithms have been introduced. The vast majority of them uses strain energy density as the mechanical stimulus. The purpose of this paper is to investigate and discuss the applicability of also other strain-based representations of the mechanical stimulus in simulations of remodeling of bone with an initial microcrack. The need for developing more reliable models is essential for both clinicians and engineers who are interested, for instance, in prediction of bone performance when various implants are involved.
[klicova_slova] => bone remodeling; strain; microdamage; mechano-regulation; finite element method
[klicova_slova_orig] => bone remodeling; strain; microdamage; mechano-regulation; finite element method
[url] =>
[oecd_obor_id] => 10610
[odpovedny_utvar_id] => 157
[odpovedny_utvar_nazev] => Institute of Solid Mechanics, Mechatronics and Biomechanics
[odpovedny_utvar_zkratka] => ISMMB
[nadrazena_soucast_id] => 4
[nadrazena_soucast_zkratka] => FME
[nadrazena_soucast_nazev] => Faculty of Mechanical Engineering
[originalni_jazyk] => en
[schvalil_id] => 53543
[schvaleno] => 2018-07-20
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[vykazovat_riv_zmeny] => 1
[slozka_id] =>
[posledni_diagnostika] =>
[vycet_osob] => BORÁK, L.; MARCIÁN, P.
[pocet_tvurcu] => 2
[tvurci_ids] =>
[poznamka] =>
[typ_nazev] =>
[kod_doi] => 10.4028/www.scientific.net/KEM.754.189
[kod_dspace] =>
[rok_vytvoreni] =>
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[popis_en] => It is widely accepted that bones have the ability to adapt to new biomechanical environment by changing their material properties, geometry and inner architecture. Bones have also an exceptional ability to self-repair, to remove microcracks and to prevent the bone damage caused by the fatigue failure. These abilities are enabled through coupled processes of bone resorption and bone formation, the processes collectively referred to as bone remodeling. Numerous studies have shown that bone remodeling is governed by combination of mechanical stimulus (strains) and its frequency, both sensed by sensor cells (osteocytes). Through mechanotransduction, the stimulus is transmitted to actor cells (osteoclasts, osteoblasts) that actually do the bone resorption or formation. Several theories have been proposed to predict bone remodeling and several finite-element-based algorithms have been introduced. The vast majority of them uses strain energy density as the mechanical stimulus. The purpose of this paper is to investigate and discuss the applicability of also other strain-based representations of the mechanical stimulus in simulations of remodeling of bone with an initial microcrack. The need for developing more reliable models is essential for both clinicians and engineers who are interested, for instance, in prediction of bone performance when various implants are involved.
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[popis] => The work investigates an influence of the macroscopic stress concentrator inside the ceramic open cell foam structure on the fracture-mechanics response of the foam upon the tensile test. As the concentrator, the central crack/rectangular notch was taken into account. The influence of the crack/notch length and width on the stress concentration ahead the concentrator tip was assessed using the simplified FE beam element based model with irregular cells simulating the real ceramic foam structure. Average principal stresses calculated on set of struts ahead the crack/notch tip were compared with average stresses in the intact structure. It was found that the ratio of these stresses increases linearly with the crack length. The stress concentration ratio is slightly lower in case of thick rectangular notch than in case of a thin crack. Furthermore, the failure load leading to
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[klicova_slova] => Ceramic foam, fracture, stress concentrator, FEM, Voronoi tessellation, tensile test.
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[citace_text] => ŠEVEČEK, O.; MAJER, Z.; BERTOLLA, L.; CHLUP, Z.; KOTOUL, M. Fracture-Mechanics Behaviour of Ceramic Foam with Macroscopic Stress Concentrator upon the Tensile Test. In Advances in Fracture and Damage Mechanics XVI. Key Engineering Materials (web). Švýcarsko: Trans Tech Publications, 2017. no. 1, p. 99-102. ISBN: 978-3-0357-1168-4. ISSN: 1662-9795.
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