Application of the Modified Hyperbolic Sine Law for Creep Rate and Creep Lifetime Equation to Grade 91 Steel

Yuandi Wu; Joan Lu; Qiang Xu

doi:10.3233/ATDE240625

Application of the Modified Hyperbolic Sine Law for Creep Rate and Creep Lifetime Equation to Grade 91 Steel

Yuandi Wu, Joan Lu, Qiang Xu

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

The minimum creep rate and the Monkman-Grant relationship are currently essential methods for predicting creep life. The accuracy of traditional power law minimum creep rate equation is unsatisfactory when applied to a wide range of stresses and temperatures. In this study, four sets of Grade 91 minimum creep rate experimental data on different stress and temperatures were applied for power law, hyperbolic sine (HS) law and a modified hyperbolic sine (MHS) law minimum creep rate equation. Additionally, attempts have been made to introduce the effects of temperature into the modified hyperbolic sine law equation. The result shows that the modified hyperbolic sine law equation exhibits higher accuracy to a wide range of stress and temperature level and shows a good agreement with life prediction. The extrapolation curve from high stress to low stress matches the trend of experimental data. It is more suitable for extrapolation to long-term service facilities such as power plants with a design life of up to 60 years.

Original language	English
Title of host publication	Advances in Machinery, Materials Science and Engineering Application X
Subtitle of host publication	Proceedings of the 10th International Conference (MMSE 2024), Paris, France, 27–28 July 2024
Editors	Marco Giorgetti, Ramesh K. Agarwal, Min Chen, Hao Peng
Publisher	IOS Press
Pages	202-209
Number of pages	8
Volume	58
ISBN (Electronic)	9781643685465
DOIs	https://doi.org/10.3233/ATDE240625
Publication status	Published - 31 Oct 2024
Event	10th International Conference on Advances in Machinery, Material Science and Engineering Application - Paris, France Duration: 27 Jul 2024 → 28 Jul 2024 Conference number: 10

Publication series

Name	Advances in Transdisciplinary Engineering
Publisher	IOS Press BV
Volume	58
ISSN (Print)	2352-751X
ISSN (Electronic)	2352-7528

Conference

Conference	10th International Conference on Advances in Machinery, Material Science and Engineering Application
Abbreviated title	MMSE 2024
Country/Territory	France
City	Paris
Period	27/07/24 → 28/07/24

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10.3233/ATDE240625Licence: CC BY-NC

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Wu, Y., Lu, J., & Xu, Q. (2024). Application of the Modified Hyperbolic Sine Law for Creep Rate and Creep Lifetime Equation to Grade 91 Steel. In M. Giorgetti, R. K. Agarwal, M. Chen, & H. Peng (Eds.), Advances in Machinery, Materials Science and Engineering Application X: Proceedings of the 10th International Conference (MMSE 2024), Paris, France, 27–28 July 2024 (Vol. 58, pp. 202-209). (Advances in Transdisciplinary Engineering; Vol. 58). IOS Press. https://doi.org/10.3233/ATDE240625

Wu, Yuandi ; Lu, Joan ; Xu, Qiang. / Application of the Modified Hyperbolic Sine Law for Creep Rate and Creep Lifetime Equation to Grade 91 Steel. Advances in Machinery, Materials Science and Engineering Application X: Proceedings of the 10th International Conference (MMSE 2024), Paris, France, 27–28 July 2024. editor / Marco Giorgetti ; Ramesh K. Agarwal ; Min Chen ; Hao Peng. Vol. 58 IOS Press, 2024. pp. 202-209 (Advances in Transdisciplinary Engineering).

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title = "Application of the Modified Hyperbolic Sine Law for Creep Rate and Creep Lifetime Equation to Grade 91 Steel",

abstract = "The minimum creep rate and the Monkman-Grant relationship are currently essential methods for predicting creep life. The accuracy of traditional power law minimum creep rate equation is unsatisfactory when applied to a wide range of stresses and temperatures. In this study, four sets of Grade 91 minimum creep rate experimental data on different stress and temperatures were applied for power law, hyperbolic sine (HS) law and a modified hyperbolic sine (MHS) law minimum creep rate equation. Additionally, attempts have been made to introduce the effects of temperature into the modified hyperbolic sine law equation. The result shows that the modified hyperbolic sine law equation exhibits higher accuracy to a wide range of stress and temperature level and shows a good agreement with life prediction. The extrapolation curve from high stress to low stress matches the trend of experimental data. It is more suitable for extrapolation to long-term service facilities such as power plants with a design life of up to 60 years.",

keywords = "Minimum creep rate, modified hyperbolic sine law, Monkman-Grant relationship, Low stress level, P91, Grade 91steel, low stress level",

author = "Yuandi Wu and Joan Lu and Qiang Xu",

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Wu, Y, Lu, J & Xu, Q 2024, Application of the Modified Hyperbolic Sine Law for Creep Rate and Creep Lifetime Equation to Grade 91 Steel. in M Giorgetti, RK Agarwal, M Chen & H Peng (eds), Advances in Machinery, Materials Science and Engineering Application X: Proceedings of the 10th International Conference (MMSE 2024), Paris, France, 27–28 July 2024. vol. 58, Advances in Transdisciplinary Engineering, vol. 58, IOS Press, pp. 202-209, 10th International Conference on Advances in Machinery, Material Science and Engineering Application, Paris, France, 27/07/24. https://doi.org/10.3233/ATDE240625

Application of the Modified Hyperbolic Sine Law for Creep Rate and Creep Lifetime Equation to Grade 91 Steel. / Wu, Yuandi; Lu, Joan; Xu, Qiang.

Advances in Machinery, Materials Science and Engineering Application X: Proceedings of the 10th International Conference (MMSE 2024), Paris, France, 27–28 July 2024. ed. / Marco Giorgetti; Ramesh K. Agarwal; Min Chen; Hao Peng. Vol. 58 IOS Press, 2024. p. 202-209 (Advances in Transdisciplinary Engineering; Vol. 58).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Wu, Yuandi

AU - Lu, Joan

AU - Xu, Qiang

N1 - Conference code: 10

PY - 2024/10/31

Y1 - 2024/10/31

N2 - The minimum creep rate and the Monkman-Grant relationship are currently essential methods for predicting creep life. The accuracy of traditional power law minimum creep rate equation is unsatisfactory when applied to a wide range of stresses and temperatures. In this study, four sets of Grade 91 minimum creep rate experimental data on different stress and temperatures were applied for power law, hyperbolic sine (HS) law and a modified hyperbolic sine (MHS) law minimum creep rate equation. Additionally, attempts have been made to introduce the effects of temperature into the modified hyperbolic sine law equation. The result shows that the modified hyperbolic sine law equation exhibits higher accuracy to a wide range of stress and temperature level and shows a good agreement with life prediction. The extrapolation curve from high stress to low stress matches the trend of experimental data. It is more suitable for extrapolation to long-term service facilities such as power plants with a design life of up to 60 years.

AB - The minimum creep rate and the Monkman-Grant relationship are currently essential methods for predicting creep life. The accuracy of traditional power law minimum creep rate equation is unsatisfactory when applied to a wide range of stresses and temperatures. In this study, four sets of Grade 91 minimum creep rate experimental data on different stress and temperatures were applied for power law, hyperbolic sine (HS) law and a modified hyperbolic sine (MHS) law minimum creep rate equation. Additionally, attempts have been made to introduce the effects of temperature into the modified hyperbolic sine law equation. The result shows that the modified hyperbolic sine law equation exhibits higher accuracy to a wide range of stress and temperature level and shows a good agreement with life prediction. The extrapolation curve from high stress to low stress matches the trend of experimental data. It is more suitable for extrapolation to long-term service facilities such as power plants with a design life of up to 60 years.

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KW - modified hyperbolic sine law

KW - Monkman-Grant relationship

KW - Low stress level

KW - P91

KW - Grade 91steel

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PB - IOS Press

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Y2 - 27 July 2024 through 28 July 2024

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Wu Y, Lu J, Xu Q. Application of the Modified Hyperbolic Sine Law for Creep Rate and Creep Lifetime Equation to Grade 91 Steel. In Giorgetti M, Agarwal RK, Chen M, Peng H, editors, Advances in Machinery, Materials Science and Engineering Application X: Proceedings of the 10th International Conference (MMSE 2024), Paris, France, 27–28 July 2024. Vol. 58. IOS Press. 2024. p. 202-209. (Advances in Transdisciplinary Engineering). Epub 2024 Oct 31. doi: 10.3233/ATDE240625

Application of the Modified Hyperbolic Sine Law for Creep Rate and Creep Lifetime Equation to Grade 91 Steel

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