On the mechanistic difference between in-phase and out-of-phase thermo-mechanical fatigue crack growth

Norman, V.; Stekovic, S.; Jones, J.; Whittaker, Mark; Grant, B.

doi:10.1016/j.ijfatigue.2020.105528

Journal article 1002 views 203 downloads

On the mechanistic difference between in-phase and out-of-phase thermo-mechanical fatigue crack growth

V. Norman, S. Stekovic, J. Jones, Mark Whittaker

, B. Grant

International Journal of Fatigue, Volume: 135, Start page: 105528

Swansea University Author: Mark Whittaker

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DOI (Published version): 10.1016/j.ijfatigue.2020.105528

Abstract

The crack driving mechanisms in a coarse grained nickel-base superalloy RR1000 when subjected to in- and out of phase thermo mechanical fatigue are investigated. It is found that the difference in fatigue crack growth rate between these two load conditions is accounted for by the different mechanica...

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Published in:	International Journal of Fatigue
ISSN:	0142-1123
Published:	Elsevier BV 2020
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa53515
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first_indexed	2020-02-20T19:59:22Z
last_indexed	2020-10-21T03:05:10Z
id	cronfa53515
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spelling	2020-10-20T12:37:53.3456127 v2 53515 2020-02-13 On the mechanistic difference between in-phase and out-of-phase thermo-mechanical fatigue crack growth a146c6d442cb2c466d096179f9ac97ca 0000-0002-5854-0726 Mark Whittaker Mark Whittaker true false 2020-02-13 MTLS The crack driving mechanisms in a coarse grained nickel-base superalloy RR1000 when subjected to in- and out of phase thermo mechanical fatigue are investigated. It is found that the difference in fatigue crack growth rate between these two load conditions is accounted for by the different mechanical conditions at the crack tip region, rather than oxidation effects. This is based on digital image correlation and finite element analyses of the mechanical strain field at the crack tip, which demonstrate that in phase leads to larger crack tip deformation and crack opening. Notably, it is demonstrated that in- and out of phase crack growth rates coincide when correlated to the crack tip opening displacement. Journal Article International Journal of Fatigue 135 105528 Elsevier BV 0142-1123 Aerospace; Superalloys; Thermomechanical fatigue; Crack growth rate; Crack opening 1 6 2020 2020-06-01 10.1016/j.ijfatigue.2020.105528 COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2020-10-20T12:37:53.3456127 2020-02-13T12:32:25.5202977 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering V. Norman 1 S. Stekovic 2 J. Jones 3 Mark Whittaker 0000-0002-5854-0726 4 B. Grant 5 53515__17015__d2d80fb4b4d942c99f512a8d0f8dc329.pdf 53515.pdf 2020-04-06T11:02:59.0168439 Output 1603629 application/pdf Version of Record true This is an open access article under the CC BY-NC-ND license. true eng http://creativecommons.org/licenses/by-nc-nd/4.0/
title	On the mechanistic difference between in-phase and out-of-phase thermo-mechanical fatigue crack growth
spellingShingle	On the mechanistic difference between in-phase and out-of-phase thermo-mechanical fatigue crack growth Mark Whittaker
title_short	On the mechanistic difference between in-phase and out-of-phase thermo-mechanical fatigue crack growth
title_full	On the mechanistic difference between in-phase and out-of-phase thermo-mechanical fatigue crack growth
title_fullStr	On the mechanistic difference between in-phase and out-of-phase thermo-mechanical fatigue crack growth
title_full_unstemmed	On the mechanistic difference between in-phase and out-of-phase thermo-mechanical fatigue crack growth
title_sort	On the mechanistic difference between in-phase and out-of-phase thermo-mechanical fatigue crack growth
author_id_str_mv	a146c6d442cb2c466d096179f9ac97ca
author_id_fullname_str_mv	a146c6d442cb2c466d096179f9ac97ca_***_Mark Whittaker
author	Mark Whittaker
author2	V. Norman S. Stekovic J. Jones Mark Whittaker B. Grant
format	Journal article
container_title	International Journal of Fatigue
container_volume	135
container_start_page	105528
publishDate	2020
institution	Swansea University
issn	0142-1123
doi_str_mv	10.1016/j.ijfatigue.2020.105528
publisher	Elsevier BV
college_str	Faculty of Science and Engineering
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hierarchy_top_title	Faculty of Science and Engineering
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hierarchy_parent_title	Faculty of Science and Engineering
department_str	School of Engineering and Applied Sciences - Materials Science and Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Materials Science and Engineering
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description	The crack driving mechanisms in a coarse grained nickel-base superalloy RR1000 when subjected to in- and out of phase thermo mechanical fatigue are investigated. It is found that the difference in fatigue crack growth rate between these two load conditions is accounted for by the different mechanical conditions at the crack tip region, rather than oxidation effects. This is based on digital image correlation and finite element analyses of the mechanical strain field at the crack tip, which demonstrate that in phase leads to larger crack tip deformation and crack opening. Notably, it is demonstrated that in- and out of phase crack growth rates coincide when correlated to the crack tip opening displacement.
published_date	2020-06-01T04:06:29Z
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score	11.037603

On the mechanistic difference between in-phase and out-of-phase thermo-mechanical fatigue crack growth

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