Detail publikace
Determination of Ramberg-Osgood approximation for estimation of low- temperature fracture toughness.
ŠANDERA, P. HORNÍKOVÁ, J. KIANICOVÁ, M. DLOUHÝ, I. POKLUDA, J.
Anglický název
Determination of Ramberg-Osgood approximation for estimation of low- temperature fracture toughness.
Typ
Stať ve sborníku v databázi WoS či Scopus
Jazyk
en
Originální abstrakt
his article presents a new method for determination of parameters of the Ramberg-Osgood (R-O) approxi-mation of the tensile diagram based on the loading-frame displacement. This procedure was successfully verified on thesamples of the high strength steel OCHN3MFA tested at various temperatures with records of both the extensometer elon-gation and the load-frame displacement. The method can be used in the model for prediction of theKIc-value based onthe critical strain local approach. The parameters of the R-O approximation obtained from the extensometer-controlledand the load-frame controlled tests are in a very good agreement. Moreover, the experimentalKIc-value at the cryogenictemperature of 77 K and the theoretical one predicted using the loading-frame displacement data are practically identical.
Klíčová slova anglicky
Ramberg-Osgood approximation, fracture toughness, cryogenic temperature, tensile test
Vydáno
2020-11-30
Nakladatel
AIP Publishing LLC.
ISBN
978-0-7354-4045-6
ISSN
1551-7616
Kniha
Fracture and Damage Mechanics
Ročník
2309
Číslo
1
Strany od–do
020024-1–020024-6
Počet stran
6