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Growth of Ring-shaped Edge Cracks under Reversed Torsional Fatigue


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Title: Growth of Ring-shaped Edge Cracks under Reversed Torsional Fatigue
Authors: Matake, Tomokazu / Imai, Yasufumi / Takase, Tooru
Issue Date: May-1983
Publisher: 社団法人日本機械学会
Citation: Bulletin of JSME. 1983, 26(215), p.692-699
Abstract: Mode III fatigue crack growth was studied using cylindrical specimens with ring-shaped edge cracks under reversed torsion. Cracks grew locally in Mode I making small branches but their macroscopic growth direction was perpendicular to the specimen axis. The crack depth was successively estimated by the compliance calibration method and the growth rate of torsional cracks was related to the applied stress intensity factor range ΔK_<III>. In torsion, friction must be considered together with mutual sliding of pre-fatigue crack surfaces. Consequently, the applied torsional torque should be modified in evaluating the effective stress intensity factor. Effect of the surface friction on the stress state around the crack tip was examined by an elastic-plastic finite element analysis.
Keywords: Fatigue Crack under Torsion / Mode III Crack Growth / Stress Intensity Factor K_<III> / Crack Growth Rate / Finite Element Method of Torsional Crack
URI: http://hdl.handle.net/10069/16754
ISSN: 00213764
Relational Links: http://ci.nii.ac.jp/naid/110002359881/
Rights: 社団法人日本機械学会 / 本文データは学協会の許諾に基づきCiNiiから複製したものである
Type: Journal Article
Text Version: publisher
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/16754

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