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Correlations between creep parameters and application to probabilistic damage assessments

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Correlations between creep parameters and application to probabilistic damage assessments. / Zentuti, Nader; Booker, Julian; Bradford, Richard; Truman, Christopher.

In: International Journal of Pressure Vessels and Piping, Vol. 165, 01.08.2018, p. 295-305.

Research output: Contribution to journalArticle

Harvard

Zentuti, N, Booker, J, Bradford, R & Truman, C 2018, 'Correlations between creep parameters and application to probabilistic damage assessments' International Journal of Pressure Vessels and Piping, vol. 165, pp. 295-305. https://doi.org/10.1016/j.ijpvp.2018.07.004

APA

Vancouver

Zentuti N, Booker J, Bradford R, Truman C. Correlations between creep parameters and application to probabilistic damage assessments. International Journal of Pressure Vessels and Piping. 2018 Aug 1;165:295-305. https://doi.org/10.1016/j.ijpvp.2018.07.004

Author

Zentuti, Nader ; Booker, Julian ; Bradford, Richard ; Truman, Christopher. / Correlations between creep parameters and application to probabilistic damage assessments. In: International Journal of Pressure Vessels and Piping. 2018 ; Vol. 165. pp. 295-305.

Bibtex

@article{3f031bd87dea45d9908a6a0c65c42b10,
title = "Correlations between creep parameters and application to probabilistic damage assessments",
abstract = "This work formalises an approach for identifying and implementing correlations in probabilistic creep crack initiation assessments. The methodology is based on partitioning data obtained from uniaxial creep test results into subsets according to temperature and stress. This work is focused on 316H stainless steel and is concerned with identifying correlations between creep deformation, creep ductility and rupture life. However, the methodology can be implemented to identify correlations for any material and any combination of properties. An implementation method is also presented for sampling correlated parameters in Monte-Carlo simulations using the Spearman rank order correlation. This is followed by a discussion of the key effects that incorporating correlations might have on probabilistic creep damage results. While a degree of correlation between ductility and creep deformation exists, it was found to be uncertain. Conducting post-assessment sensitivity analyses based on uncorrelated parameters is suggested as a means for providing focus as to which correlations are most important for the assessment results.",
keywords = "Correlations, Creep, Damage, Monte-Carlo, Probabilistic, Sensitivity analysis",
author = "Nader Zentuti and Julian Booker and Richard Bradford and Christopher Truman",
year = "2018",
month = "8",
day = "1",
doi = "10.1016/j.ijpvp.2018.07.004",
language = "English",
volume = "165",
pages = "295--305",
journal = "International Journal of Pressure Vessels and Piping",
issn = "0308-0161",
publisher = "Elsevier",

}

RIS - suitable for import to EndNote

TY - JOUR

T1 - Correlations between creep parameters and application to probabilistic damage assessments

AU - Zentuti, Nader

AU - Booker, Julian

AU - Bradford, Richard

AU - Truman, Christopher

PY - 2018/8/1

Y1 - 2018/8/1

N2 - This work formalises an approach for identifying and implementing correlations in probabilistic creep crack initiation assessments. The methodology is based on partitioning data obtained from uniaxial creep test results into subsets according to temperature and stress. This work is focused on 316H stainless steel and is concerned with identifying correlations between creep deformation, creep ductility and rupture life. However, the methodology can be implemented to identify correlations for any material and any combination of properties. An implementation method is also presented for sampling correlated parameters in Monte-Carlo simulations using the Spearman rank order correlation. This is followed by a discussion of the key effects that incorporating correlations might have on probabilistic creep damage results. While a degree of correlation between ductility and creep deformation exists, it was found to be uncertain. Conducting post-assessment sensitivity analyses based on uncorrelated parameters is suggested as a means for providing focus as to which correlations are most important for the assessment results.

AB - This work formalises an approach for identifying and implementing correlations in probabilistic creep crack initiation assessments. The methodology is based on partitioning data obtained from uniaxial creep test results into subsets according to temperature and stress. This work is focused on 316H stainless steel and is concerned with identifying correlations between creep deformation, creep ductility and rupture life. However, the methodology can be implemented to identify correlations for any material and any combination of properties. An implementation method is also presented for sampling correlated parameters in Monte-Carlo simulations using the Spearman rank order correlation. This is followed by a discussion of the key effects that incorporating correlations might have on probabilistic creep damage results. While a degree of correlation between ductility and creep deformation exists, it was found to be uncertain. Conducting post-assessment sensitivity analyses based on uncorrelated parameters is suggested as a means for providing focus as to which correlations are most important for the assessment results.

KW - Correlations

KW - Creep

KW - Damage

KW - Monte-Carlo

KW - Probabilistic

KW - Sensitivity analysis

UR - http://www.scopus.com/inward/record.url?scp=85050551426&partnerID=8YFLogxK

U2 - 10.1016/j.ijpvp.2018.07.004

DO - 10.1016/j.ijpvp.2018.07.004

M3 - Article

VL - 165

SP - 295

EP - 305

JO - International Journal of Pressure Vessels and Piping

T2 - International Journal of Pressure Vessels and Piping

JF - International Journal of Pressure Vessels and Piping

SN - 0308-0161

ER -