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Evaluating the influence of residual stresses and surface damage on fatigue life of Nickel superalloys

Abstract:

The effect of surface damage, such as dents caused due to the low velocity impact of hard blunt objects, on the fatigue life of mechanical components are investigated in this paper. A twodimensional dislocation density approach is used to obtain the stress intensity factors of a crack propagating under dents. Both the contributions of the geometrical stress concentrator (notch), due to the presence of the dent, and the residual stress field, generated during the impact, on the stress intensit...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1016/j.ijfatigue.2017.08.015

Authors


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Department:
Christ Church
Fleury, RMN More by this author
Innovate UK More from this funder
Rolls-Royce plc More from this funder
Publisher:
Elsevier Publisher's website
Journal:
International Journal of Fatigue Journal website
Volume:
105
Pages:
27-33
Publication date:
2017-08-05
Acceptance date:
2017-08-16
DOI:
ISSN:
1879-3452
Pubs id:
pubs:718512
URN:
uri:b8a6cec0-5766-47a4-9df9-5ef2b2ddbdfc
UUID:
uuid:b8a6cec0-5766-47a4-9df9-5ef2b2ddbdfc
Local pid:
pubs:718512

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