On Tanaka-Mura's fatigue crack nucleation model and validation

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DOI	Resolve DOI: http://doi.org/10.1111/ffe.12736
Author	Search for: Wu, Xijia¹
Name affiliation	National Research Council Canada. Aerospace
Type	Article
Journal title	Fatigue & Fracture of Engineering Materials & Structures
ISSN	8756-758X
Pages	# of pages: 6
Subject	dislocations; fatigue crack nucleation; fatigue life prediction
Abstract	Tanaka-Mura's fatigue crack nucleation model is revisited. A dimensional problem is found in their cyclic plastic strain formulation obtained by integration of the displacement function, and hence, it is rederived based on the true strain definition. Using the corrected strain formulation, a new fatigue crack nucleation life expression is obtained, and for the first time, low cycle fatigue lives of several metals and alloys are predicted without resorting to experiments. With such theoretical life as the baseline, other factors such as surface roughness, environment, and even high-temperature damage mechanisms can be delineated in further studies.
Publication date	2017-10-27
Publisher	Wiley
Language	English
Peer reviewed	Yes
NPARC number	23002445
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Record identifier	5e52bb43-7ae9-4e05-b68c-43d8c50f2a37
Record created	2017-11-10
Record modified	2017-11-10