Symmetric Branching of Mode II and Mixed-Mode Fatigue Crack Growth in a Stainless Steel-Reference-Cited by-同舟云学术

Symmetric Branching of Mode II and Mixed-Mode Fatigue Crack Growth in a Stainless Steel

Published:1996-07-01 Issue:3 Volume:118 Page:356-361
ISSN:0094-4289
Container-title:Journal of Engineering Materials and Technology
language:en
Short-container-title:

Author:

Qian Cai-Fu¹,Wang Ming-O¹,Wu Bao-Juan¹,Dai Shu-Ho¹,Li J. C. M.²

Affiliation:

1. Department of Mechanical Engineering, Nanjing Institute of Chemical Technology, Nanjing, Jiangsu 210009, P.R. China

2. Department of Mechanical Engineering, University of Rochester, Rochester, NY 14627

Abstract

Symmetric branching was found in all fatigue experiments carried out in a cruciform specimen in which the initial crack was in the middle of the specimen and at 45 deg with respect to the loading axes. The loading was biaxial, sinusoidal along each axis and out-of-phase from each other. Stress intensity factor calculations using finite element methods showed ΔKII was almost zero along each branch for all four branches so that all branches were Mode I cracks. The propagation of branched Mode I cracks in the initial Mode II damaged zone was faster than in their own Mode I zone created afterwards. The two dominantly branched cracks shielded the other small cracks appeared during the initiation of branching.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

http://asmedigitalcollection.asme.org/materialstechnology/article-pdf/118/3/356/5717124/356_1.pdf

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