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Investigation of fatigue crack models by micro-scale measurement of crack tip deformation

Abstract:

The paper describes displacement measurements taken in the vicinity of a fatigue crack tip using digital image correlation. In-situ loading is employed in a scanning electron microscope to get measurements very close to the tip. The results are compared to the usual elastic model of crack tip deformation and to the Christopher, James and Patterson model, which is critically discussed. It is shown that the use of an elastic model with a residual stress intensity caused by crack tip shielding g...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Accepted Manuscript

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Publisher copy:
10.1016/j.ijfatigue.2018.01.015

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Institution:
University of Oxford
Division:
MPLS Division
Department:
Engineering Science
Oxford college:
Christ Church College
More by this author
Institution:
University of Oxford
Division:
MPLS Division
Department:
Engineering Science
More by this author
Institution:
University of Oxford
Division:
MPLS Division
Department:
Engineering Science
Publisher:
Elsevier Publisher's website
Journal:
International Journal of Fatigue Journal website
Volume:
115
Pages:
20-26
Publication date:
2018-05-07
Acceptance date:
2018-01-15
DOI:
ISSN:
0142-1123
Pubs id:
pubs:827417
URN:
uri:9f7c56e8-ae31-4193-9884-df2bad903e14
UUID:
uuid:9f7c56e8-ae31-4193-9884-df2bad903e14
Local pid:
pubs:827417

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