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Constraints Imposed by the Wilshire Methodology on Creep Rupture Data and Procedures for Testing the Validity of Such Constraints: Illustration Using 1Cr-1Mo-0.25V Steel

Mark Evans Orcid Logo

Metallurgical and Materials Transactions A, Volume: 46, Issue: 2, Pages: 937 - 947

Swansea University Author: Mark Evans Orcid Logo

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DOI (Published version): 10.1007/s11661-014-2655-9

Abstract

A new parametric approach, termed the Wilshire equations, offers the realistic potential of being able to accurately life materials operating at in service conditions from accelerated test results lasting no more than 5000 hours. These Wilshire equations contain discontinuities that have in the lite...

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Published in: Metallurgical and Materials Transactions A
ISSN: 1073-5623 1543-1940
Published: 2015
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URI: https://cronfa.swan.ac.uk/Record/cronfa20586
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first_indexed 2015-04-01T02:05:25Z
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spelling 2020-10-21T11:12:32.3790377 v2 20586 2015-03-31 Constraints Imposed by the Wilshire Methodology on Creep Rupture Data and Procedures for Testing the Validity of Such Constraints: Illustration Using 1Cr-1Mo-0.25V Steel 7720f04c308cf7a1c32312058780d20c 0000-0003-2056-2396 Mark Evans Mark Evans true false 2015-03-31 MTLS A new parametric approach, termed the Wilshire equations, offers the realistic potential of being able to accurately life materials operating at in service conditions from accelerated test results lasting no more than 5000 hours. These Wilshire equations contain discontinuities that have in the literature been interpreted either in terms of changing deformation mechanisms or changes in where deformation occurs within a material (i.e., within boundaries or crystals). This paper demonstrates that the rather restrictive nature of these discontinuities within the Wilshire equations can lead to problems in identifying an appropriate model for long-term life prediction. An alternative framework is developed that removes these restrictions but still maintains the fundamental nature and characteristics of the Wilshire methodology. Further, when this alternative structure is applied to 1Cr-1Mo-0.25V steel, it produces more accurate and realistic looking long-term predictions of the time to failure. Journal Article Metallurgical and Materials Transactions A 46 2 937 947 1073-5623 1543-1940 28 2 2015 2015-02-28 10.1007/s11661-014-2655-9 COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2020-10-21T11:12:32.3790377 2015-03-31T16:10:05.5362495 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Mark Evans 0000-0003-2056-2396 1 0020586-21122017112713.pdf 20586.pdf 2017-12-21T11:27:13.8930000 Output 1088526 application/pdf Accepted Manuscript true 2016-02-29T00:00:00.0000000 false eng
title Constraints Imposed by the Wilshire Methodology on Creep Rupture Data and Procedures for Testing the Validity of Such Constraints: Illustration Using 1Cr-1Mo-0.25V Steel
spellingShingle Constraints Imposed by the Wilshire Methodology on Creep Rupture Data and Procedures for Testing the Validity of Such Constraints: Illustration Using 1Cr-1Mo-0.25V Steel
Mark Evans
title_short Constraints Imposed by the Wilshire Methodology on Creep Rupture Data and Procedures for Testing the Validity of Such Constraints: Illustration Using 1Cr-1Mo-0.25V Steel
title_full Constraints Imposed by the Wilshire Methodology on Creep Rupture Data and Procedures for Testing the Validity of Such Constraints: Illustration Using 1Cr-1Mo-0.25V Steel
title_fullStr Constraints Imposed by the Wilshire Methodology on Creep Rupture Data and Procedures for Testing the Validity of Such Constraints: Illustration Using 1Cr-1Mo-0.25V Steel
title_full_unstemmed Constraints Imposed by the Wilshire Methodology on Creep Rupture Data and Procedures for Testing the Validity of Such Constraints: Illustration Using 1Cr-1Mo-0.25V Steel
title_sort Constraints Imposed by the Wilshire Methodology on Creep Rupture Data and Procedures for Testing the Validity of Such Constraints: Illustration Using 1Cr-1Mo-0.25V Steel
author_id_str_mv 7720f04c308cf7a1c32312058780d20c
author_id_fullname_str_mv 7720f04c308cf7a1c32312058780d20c_***_Mark Evans
author Mark Evans
author2 Mark Evans
format Journal article
container_title Metallurgical and Materials Transactions A
container_volume 46
container_issue 2
container_start_page 937
publishDate 2015
institution Swansea University
issn 1073-5623
1543-1940
doi_str_mv 10.1007/s11661-014-2655-9
college_str Faculty of Science and Engineering
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hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
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 A new parametric approach, termed the Wilshire equations, offers the realistic potential of being able to accurately life materials operating at in service conditions from accelerated test results lasting no more than 5000 hours. These Wilshire equations contain discontinuities that have in the literature been interpreted either in terms of changing deformation mechanisms or changes in where deformation occurs within a material (i.e., within boundaries or crystals). This paper demonstrates that the rather restrictive nature of these discontinuities within the Wilshire equations can lead to problems in identifying an appropriate model for long-term life prediction. An alternative framework is developed that removes these restrictions but still maintains the fundamental nature and characteristics of the Wilshire methodology. Further, when this alternative structure is applied to 1Cr-1Mo-0.25V steel, it produces more accurate and realistic looking long-term predictions of the time to failure.
published_date 2015-02-28T03:24:23Z
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score 11.017731

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