Počet záznamů: 1
Constraint effect on the slow crack growth in polyethylene
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SYSNO ASEP 0385514 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Ostatní články Název Constraint effect on the slow crack growth in polyethylene Tvůrce(i) Hutař, Pavel (UFM-A) RID, ORCID
Zouhar, Michal (UFM-A)
Nezbedová, E. (CZ)
Sadílek, J. (CZ)
Žídek, J. (CZ)
Náhlík, Luboš (UFM-A) RID, ORCID
Knésl, Zdeněk (UFM-A)Celkový počet autorů 7 Zdroj.dok. International Journal of Structural Integrity - ISSN 1757-9864
Roč. 2, č. 3 (2012), s. 118-126Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova slow crack growth ; polyethylene ; constraint Vědní obor RIV JL - Únava materiálu a lomová mechanika CEP GD106/09/H035 GA ČR - Grantová agentura ČR GA106/09/0279 GA ČR - Grantová agentura ČR GC101/09/J027 GA ČR - Grantová agentura ČR Institucionální podpora UFM-A - RVO:68081723 Anotace From the practical point of view, most relevant damage to high density polyethylene (HDPE) structures is caused by slow crack growth. Therefore, detailed information about this type of damage is necessary. Experimental results transfer from specimens to real structure can be influenced by structure geometry (constraint). Therefore, the purpose of this paper is to investigate and discuss the effect of the constraint and relation between crack mouth opening displacement (CMOD) and crack length. The constraint effect is mainly effect of the structure geometry and can be quantified by T-stress. Two different test specimens with different constraint level (T-stress) were prepared: single edge notched specimen and modified single edge notch (SEN) specimen. The crack mouth opening displacement, crack tip opening displacement and crack length was measured. The main conclusions of this work can be summarized as: the slow crack growth rate in HDPE materials corresponds to velocity of CMOD; the influence of the presented specimen geometry on slow crack growth rate can be considered as negligible; and for transfer of the experimental results from specimens to real structure the influence of the structure geometry (constraint) is not critical. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2013
Počet záznamů: 1