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Online ISSN : 1884-0329
Print ISSN : 1880-9928
ISSN-L : 1880-9928
Method for Estimating Fatigue Crack Propagation Rate for a Crack in Welded Joints
Kazuo TATEISHITakeshi HANJISatoshi YAMADAMakoto ABE
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2001 Volume 8 Issue 31 Pages 11-16

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Abstract

Recently, a lot of fatigue cracks have been found in steel bridges due to the increase of the large-scale vehicles in number as well as weight. In order to consider a repairing and retrofitting method, it is necessary to estimate whether the crack propagates more or not . In this study, a method to estimate the fatigue crack propagation rate is proposed, which is based on the crack opening width measured by image analysis on a digital image recorded with a portable digital microscope. The accuracy and limitation of the method were investigated through a fatigue test carried out on a fatigue crack in welded joint specimen

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© Japanese Society of Steel Construction
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