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

Oliver J. McCarthy; J. P. McGarry; Sean B. Leen

doi:10.13025/19170

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

Oliver J. McCarthy
, J. P. McGarry
, Sean B. Leen

University of Galway

Research output: Contribution to a Journal (Peer & Non Peer) › Article › peer-review

48 Citations (Scopus)

1 Downloads (Pure)

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. (C) 2013 Elsevier Ltd. All rights reserved.

Original language	English (Ireland)
Pages (from-to)	180-193
Number of pages	14
Journal	International Journal of Fatigue
Volume	62
DOIs	https://doi.org/10.13025/19170 https://doi.org/10.1016/j.ijfatigue.2013.04.019
Publication status	Published - 1 May 2014

Keywords

Crack nucleation
Crystal plasticity
Fretting wear
Ti-6Al-4V

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10.13025/19170Licence: CC BY-NC-ND
10.1016/j.ijfatigue.2013.04.019

McCarthy et al Wear 2013 MicromechanicalAccepted author manuscript, 1.44 MBLicence: CC BY-NC-ND

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title = "Micro-mechanical modelling of fretting fatigue crack initiation and wear in Ti-6Al-4V",

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. (C) 2013 Elsevier Ltd. All rights reserved.",

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AU - McCarthy, Oliver J.

AU - McGarry, J. P.

AU - Leen, Sean B.

PY - 2014/5/1

Y1 - 2014/5/1

N2 - 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. (C) 2013 Elsevier Ltd. All rights reserved.

AB - 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. (C) 2013 Elsevier Ltd. All rights reserved.

KW - Crack nucleation

KW - Crystal plasticity

KW - Fretting wear

KW - Ti-6Al-4V

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SP - 180

EP - 193

JO - International Journal of Fatigue

JF - International Journal of Fatigue

ER -

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

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Keywords

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