INITIATION AND GROWTH OF FRETTING FATIGUE CRACKS IN THE PARTIAL SLIP REGIME |
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| Authors: | M. Kuno R. B. Waterhouse D. Nowell D. A. Hills |
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| Affiliation: | Department of Metallurgy and Materials Science, Nottingham University, University Park, Nottingham NG7 2RD;Department of Engineering Science, Oxford University, Oxford, England |
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| Abstract: | Abstract— —Recent work addressing the problems of fretting fatigue crack initiation and propagation under a carefully controlled axi-symmetric Hertzian contact is described. Both experimental work, enabling the fretting damage, sites of initiation, and crack trajectory to be viewed, and theoretical work, permitting a prediction of those processes are presented. Good correlation between the two strands of work is found. In particular, the initiation criterion proposed by Ruiz, Boddington and Chen for a very different geometry is found to work well, and would seem to indicate its potential as a design tool. |
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