Experimental Study on Fatigue Crack Propagation of through-Thickness Crack under Out-of-Plane Bending

Xiao Chen Ju; Tateishi Kazuo

doi:10.4028/www.scientific.net/AMM.166-169.1277

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 166-169Experimental Study on Fatigue Crack Propagation of...

Experimental Study on Fatigue Crack Propagation of through-Thickness Crack under Out-of-Plane Bending

Abstract:

In Japan, fatigue through-thickness cracks have been reported in steel bridges. Some of the cracks are originated by out-of-plane bending. For performing more efficient maintenance against the fatigue damages, it is essential to identify the crack propagation behavior of the through-thickness crack under out-of-plane bending. As an important factor to assess the crack propagation behavior, generally, stress intensity factor for through-thickness crack under bending was determined by some assumptions that crack front shape is straight in thickness direction. However, the actual crack front is curved under out-of-plane bending. In this paper, in order to identify the propagation behavior of through-thickness crack under out-of-plane bending, the fatigue test on through-thickness cracked plate was carried out. Moreover, through finite element analysis on the test specimen, the stress intensity factor along curved crack front was investigated.

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Periodical:

Applied Mechanics and Materials (Volumes 166-169)

Pages:

1277-1283

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.166-169.1277

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Online since:

May 2012

Authors:

Xiao Chen Ju, Tateishi Kazuo

Keywords:

Crack Propagation, Out-of-Plane Bending, Stress Intensity Factor (SIF), Through-Thickness Crack

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