Počet záznamů: 1
The size effect on J-R curve for construction steels and its prediction by simplified mechanical model
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SYSNO ASEP 0495908 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název The size effect on J-R curve for construction steels and its prediction by simplified mechanical model Tvůrce(i) Stratil, Luděk (UFM-A) ORCID, RID
Šiška, Filip (UFM-A) RID, ORCID
Hadraba, Hynek (UFM-A) RID, ORCID
Dlouhý, Ivo (UFM-A) RID, ORCIDCelkový počet autorů 4 Číslo článku UNSP V06BT06A066 Zdroj.dok. PROCEEDINGS OF THE ASME PRESSURE VESSELS AND PIPING CONFERENCE, 2018,, VOL 6B. - New York : ASME, 2019 / Qian H. ; Brongers M. ; Uddin M. - ISBN 978-0-7918-5168-5 Poč.str. 6 s. Forma vydání Online - E Akce ASME 2018 - Pressure Vessels and Piping Conference Datum konání 15.07.2018 - 20.07.2018 Místo konání Prague Země CZ - Česká republika Typ akce WRD Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova Fracture toughness ; J-R curve ; P91 ; Eurofer97 ; size effect ; Schindler's model Vědní obor RIV JL - Únava materiálu a lomová mechanika Obor OECD Audio engineering, reliability analysis CEP GA17-13573S GA ČR - Grantová agentura ČR EE2.3.20.0197 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UFM-A - RVO:68081723 UT WOS 000460999000066 EID SCOPUS 85056855115 Anotace Evaluation of mechanical properties from a small amount of test material is essential in a process of development of new alloys and monitoring of degradation and damage of in-service components. Miniaturization of test specimen together with a specimen reconstitution technique enable direct method of evaluation of mechanical properties if only a limited amount of material is available. Modern types of construction steels and alloys possess improved metallurgical and mechanical properties and also demonstrate a high level of fracture toughness. In these cases, correlation and correction of size effect on fracture toughness between different specimen sizes are needed. Within this contribution the size effect of J-R curve for two sizes of three-point-bend specimens is solved. The J-R curves of three-point-bend specimens with cross-section 10×10 mm and 3×4 mm of P91 and Eurofer97 steel were determined at room temperature. The existence of size effect is proven as larger specimens demonstrate higher J-R curves than smaller specimens for both steels. Simplified mechanical model based on fracture energies initially proposed by Schindler et al. is applied to describe experimentally determined J-R curves and to predict the observed size effect between used specimen sizes. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2020
Počet záznamů: 1