Micro-mechanical modelling of fretting fatigue crack initiation and wear in Ti–6Al–4V

McCarthy, O.J. and McGarry, J.P. and Leen, S.B. (2014) Micro-mechanical modelling of fretting fatigue crack initiation and wear in Ti–6Al–4V. International Journal of Fatigue, 62. pp. 180-193. ISSN 01421123

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Abstract

A micro-mechanical modelling methodology is presented for predicting fretting fatigue crack nucleation in Ti–6Al–4V. The methodology is based on a combination of (i) a unit cell crystal plasticity model of Ti– 6Al–4V, (ii) a frictional contact model of an experimental fretting wear configuration, and (iii) implementation of a microstructure-sensitive fatigue indication parameter for prediction of crack nucleation. A novel micro-mechanical method for wear prediction is presented. A key finding is the important role of cyclic micro-plasticity in ostensibly elastic loading regimes in fretting wear, resulting in significant effects on distributions of salient fretting contact variables such as contact pressure. � 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 08:16
Last Modified:	22 Aug 2016 10:27
URI:	http://repository-testing.wit.ie/id/eprint/2805

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