The effect of grain orientation on fretting fatigue plasticity and life prediction

McCarthy, O.J. and McGarry, J.P. and Leen, S.B. (2013) The effect of grain orientation on fretting fatigue plasticity and life prediction. Tribology International. ISSN 0301679X

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Abstract

A study on crystal and J2 plasticity prediction of fretting fatigue is presented, using a microstructuresensitive fatigue parameter for crystal plasticity crack nucleation and a critical-plane (multiaxial) fatigue parameter for J2 plasticity. A short crack propagation methodology is also implemented. The effect of grain orientation on nucleation life is shown to be significant for fretting fatigue. J2 plasticity generally predicts conservative lives. Crystal plasticity is superior in terms of (i) accuracy of life prediction, (ii) ability to facilitate wear prediction and (iii) capturing the key effects of substrate fatigue stress and grain orientation on life. The crystal plasticity model facilitates new insight into interaction between grain orientation, fatigue stress amplitude and fretting surface damage vis-à-vis fretting fatigue life. & 2013 Elsevier Ltd. All rights reserved.

Item Type:	Article
Departments or Groups:	South East Applied Materials Research Centre
Divisions:	School of Engineering
Depositing User:	Oliver McCarthy
Date Deposited:	28 Apr 2014 08:14
Last Modified:	22 Aug 2016 10:27
URI:	http://repository-testing.wit.ie/id/eprint/2807

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