Počet záznamů: 1
Fatigue Strength of Weathering Steel
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SYSNO ASEP 0385947 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Fatigue Strength of Weathering Steel Tvůrce(i) Kunz, Ludvík (UFM-A) RID, ORCID
Lukáš, Petr (UFM-A)
Klusák, Jan (UFM-A) RID, ORCIDCelkový počet autorů 3 Zdroj.dok. Materials Science - ISSN 1392-1320
Roč. 18, č. 1 (2012), s. 18-22Poč.str. 5 s. Jazyk dok. eng - angličtina Země vyd. LT - Litva Klíč. slova fatigue of weathering steel ; corrosion pits ; fatigue notch factor Vědní obor RIV JL - Únava materiálu a lomová mechanika Institucionální podpora UFM-A - RVO:68081723 UT WOS 000302512200004 DOI 10.5755/j01.ms.18.1.1335 Anotace Fatigue behaviour of Atmofix 52 steel (comparable to COR-TEN steel) exposed to atmospheric corrosion for 20 years was investigated. S-N curves for load symmetrical cycling and cycling with stress ratio R = 0 were determined on specimens detracted from a failed transmission tower. The data were compared with those on material without a rust layer. The fracture surfaces and, in particular, the sites of fatigue crack initiation were analyzed. Substantial decrease of fatigue life and fatigue limit due to corrosion exposition was found. Based on observation of surface layer with corrosion products and on fractographic analysis of failed specimens conclusions on fatigue damage mechanism were drawn. No grain boundary corrosion, which can be responsible for fatigue crack initiation, was observed. Initiation of fatigue cracks was related to surface roughness and took place exclusively on corrosion dimples. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2013
Počet záznamů: 1