Journal article 34 views
The reliability of S shaped curve creep models when the high temperature tensile strength is strain rate dependent
International Journal of Pressure Vessels and Piping, Volume: 214, Start page: 105418
Swansea University Author: Mark Evans
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DOI (Published version): 10.1016/j.ijpvp.2024.105418
Abstract
It is important to be able to predict the creep life of materials used in power plants and aeroengines. This paper illustrates the role played by a materials tensile strength in achieving this. It also shows that published high temperature tensile strength values are not always suitable for use in c...
Published in: | International Journal of Pressure Vessels and Piping |
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ISSN: | 0308-0161 1879-3541 |
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Elsevier BV
2025
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URI: | https://cronfa.swan.ac.uk/Record/cronfa68630 |
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2025-01-08T13:26:53.3061625 v2 68630 2025-01-02 The reliability of S shaped curve creep models when the high temperature tensile strength is strain rate dependent 7720f04c308cf7a1c32312058780d20c 0000-0003-2056-2396 Mark Evans Mark Evans true false 2025-01-02 EAAS It is important to be able to predict the creep life of materials used in power plants and aeroengines. This paper illustrates the role played by a materials tensile strength in achieving this. It also shows that published high temperature tensile strength values are not always suitable for use in certain creep models due to its strain rate dependency. Using strain rates larger than those used by NIMS (0.00125/s) resulted in more sensible estimates of the activation energy for creep. Using these larger strain rates also resulted in an improved fit of these models to the experimental data. Using a strain rate of 0.0133/s instead of 0.00125/s also lead to substantial reduction in the proportion of any prediction error that was random in nature. When using a strain rate of 0.0133/s, good predictions of life out to 130,000 h can be made from data with a maximum life of 1230 h. Journal Article International Journal of Pressure Vessels and Piping 214 105418 Elsevier BV 0308-0161 1879-3541 S shaped curve creep models; Strain rate; Creep testing; Tensile testing 1 4 2025 2025-04-01 10.1016/j.ijpvp.2024.105418 COLLEGE NANME Engineering and Applied Sciences School COLLEGE CODE EAAS Swansea University SU Library paid the OA fee (TA Institutional Deal) This research was not funded by research council grants or private sponsors and as such there are no financial relationships to declare. 2025-01-08T13:26:53.3061625 2025-01-02T09:42:25.8564421 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Mark Evans 0000-0003-2056-2396 1 |
title |
The reliability of S shaped curve creep models when the high temperature tensile strength is strain rate dependent |
spellingShingle |
The reliability of S shaped curve creep models when the high temperature tensile strength is strain rate dependent Mark Evans |
title_short |
The reliability of S shaped curve creep models when the high temperature tensile strength is strain rate dependent |
title_full |
The reliability of S shaped curve creep models when the high temperature tensile strength is strain rate dependent |
title_fullStr |
The reliability of S shaped curve creep models when the high temperature tensile strength is strain rate dependent |
title_full_unstemmed |
The reliability of S shaped curve creep models when the high temperature tensile strength is strain rate dependent |
title_sort |
The reliability of S shaped curve creep models when the high temperature tensile strength is strain rate dependent |
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7720f04c308cf7a1c32312058780d20c |
author_id_fullname_str_mv |
7720f04c308cf7a1c32312058780d20c_***_Mark Evans |
author |
Mark Evans |
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Mark Evans |
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Journal article |
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International Journal of Pressure Vessels and Piping |
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214 |
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105418 |
publishDate |
2025 |
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Swansea University |
issn |
0308-0161 1879-3541 |
doi_str_mv |
10.1016/j.ijpvp.2024.105418 |
publisher |
Elsevier BV |
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Faculty of Science and Engineering |
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Faculty of Science and Engineering |
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facultyofscienceandengineering |
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Faculty of Science and Engineering |
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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 |
It is important to be able to predict the creep life of materials used in power plants and aeroengines. This paper illustrates the role played by a materials tensile strength in achieving this. It also shows that published high temperature tensile strength values are not always suitable for use in certain creep models due to its strain rate dependency. Using strain rates larger than those used by NIMS (0.00125/s) resulted in more sensible estimates of the activation energy for creep. Using these larger strain rates also resulted in an improved fit of these models to the experimental data. Using a strain rate of 0.0133/s instead of 0.00125/s also lead to substantial reduction in the proportion of any prediction error that was random in nature. When using a strain rate of 0.0133/s, good predictions of life out to 130,000 h can be made from data with a maximum life of 1230 h. |
published_date |
2025-04-01T20:45:08Z |
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1822255123007537152 |
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11.048453 |