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A fatigue crack nucleation model for anisotropic materials

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1111/ffe.12907
AuthorSearch for: 1
Affiliation
  1. National Research Council of Canada. Aerospace
FormatText, Article
Subjectanisotropy; fatigue crack initiation; fatigue life prediction
Abstract
Based on Tanaka‐Mura's dislocation‐dipole pile‐up configuration, a formulation of mixed mode fatigue crack nucleation is derived using the Stroh formalism for generally anisotropic materials. The fatigue life is explicitly expressed as inversely proportional to the stored plastic energy, depending on the material's anisotropic elastic matrix F−1, surface energy, Burgers vector, and lattice resistance. The model has been shown to agree with experimental observation on critical slip planes in PWA 1493 single crystal Ni‐base superalloy.
Publication date
PublisherWiley
In
  • Fatigue & Fracture of Engineering Materials & Structures 42, no. 1: 387–393.
LanguageEnglish
Peer reviewedYes
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Record identifier84972489-cce4-4618-9a15-cb60f538a7f9
Record created2019-05-06
Record modified2020-03-16
Date modified: