Počet záznamů: 1
The prediction of size effect on J R curve for Eurofer97 steel by simplified mechanical model
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SYSNO ASEP 0450456 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název The prediction of size effect on J R curve for Eurofer97 steel by simplified mechanical model Tvůrce(i) Stratil, Luděk (UFM-A) ORCID
Šiška, Filip (UFM-A) RID, ORCID
Hadraba, Hynek (UFM-A) RID, ORCID
Dlouhý, Ivo (UFM-A) RID, ORCIDCelkový počet autorů 4 Zdroj.dok. ASME 2015 Pressure Vessels and Piping Conference. - Boston : ASME, 2015 - ISBN 978-0-7918-5692-5 Rozsah stran s. 1-9 Poč.str. 9 s. Forma vydání Tištěná - P Akce PVP 2015 Pressure Vessels & Piping Conference Datum konání 19.07.2015-23.07.2015 Místo konání Boston Země US - Spojené státy americké Typ akce WRD Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova Schindler’s model ; Eurofer97 ; J-R curve ; size effect Vědní obor RIV JL - Únava materiálu a lomová mechanika CEP EE2.3.20.0197 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy GJ15-21292Y GA ČR - Grantová agentura ČR Institucionální podpora UFM-A - RVO:68081723 UT WOS 000380290800065 EID SCOPUS 84961363052 DOI 10.1115/PVP2015-45703 Anotace The possibilities to derive fracture toughness from small specimens are naturally limited due to constraint requirements which are especially restrictive in toughness testing. The loss of constraint at the crack tip is more likely to occur as specimen size decreases. Application of miniature specimens in fracture toughness testing thus requires a suitable methodology or correction procedure to deal with phenomenon of the constraint loss. Schindler et al. have proposed a simplified mechanical model that can be used to scale up the key test characteristics from miniature specimen to the larger one. The model is applied to the miniature bending specimens to describe size effect on J R curve of the Eurofer97 steel. The examined steel exhibits quite high toughness values at upper shelf region of fracture toughness. As a result, experimentally determined J R curves of three different sizes of pre cracked bending specimens showed high values of J integral, which were significantly different each other. Using semi empirical definition of the exponent of the power law function of J R curve the performance of the Schindler’s model was quite successful. It was shown that the model is able to handle with size effect of tested pre cracked three point bend specimens. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2016
Počet záznamů: 1