MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
Influence of Measurement Location on Local Crack Opening Displacement
ZhengMing SunBrigitte Weiss
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JOURNALS FREE ACCESS

2003 Volume 44 Issue 1 Pages 115-117

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Abstract

By means of local measurement with a laser interferometry technique, the difference in fatigue crack opening evaluation results was revealed when the measurements were conducted at different locations along the length of a fatigue crack in an aluminum alloy. It was found that the crack opening stress increases when the measuring location approaches the crack tip. The experimental study leads to a suggestion that the fatigue crack closure result evaluated with the data obtained from a location far from the crack tip will underestimate the closure effect.

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© 2003 The Japan Institute of Metals and Materials
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