Comparative analysis of deterministic and probabilistic fracture mechanical assessment tools

K. Heckmann, Q. Saifi

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Abstract

Uncertainties in material properties, manufacturing processes, loading conditions and damage mechanisms complicate the quantification of structural reliability. Probabilistic structure mechanical computing codes serve as tools for assessing leakand break probabilities of nuclear piping components. Probabilistic fracture mechanical tools were compared in different benchmark activities, usually revealing minor, but systematic discrepancies between results of different codes. In this joint paper, probabilistic fracture mechanical codes are compared. Crack initiation, crack growth and the influence of in-service inspections are analyzed. Example cases for stress corrosion cracking and fatigue in LWR conditions are analyzed. The evolution of annual failure probabilities during simulated operation time is investigated, in order to identify the reasons for differences in the results of different codes. The comparison of the tools is used for further improvements of the codes applied by the partners.
Original languageEnglish
Pages (from-to)484-497
JournalKerntechnik
Volume81
Issue number5
DOIs
Publication statusPublished - 2016
MoE publication typeA1 Journal article-refereed

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Corrosion fatigue
Stress corrosion cracking
Crack initiation
structural reliability
Crack propagation
Materials properties
stress corrosion cracking
Inspection
crack initiation
inspection
manufacturing
cracks
damage
Uncertainty

Cite this

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title = "Comparative analysis of deterministic and probabilistic fracture mechanical assessment tools",
abstract = "Uncertainties in material properties, manufacturing processes, loading conditions and damage mechanisms complicate the quantification of structural reliability. Probabilistic structure mechanical computing codes serve as tools for assessing leakand break probabilities of nuclear piping components. Probabilistic fracture mechanical tools were compared in different benchmark activities, usually revealing minor, but systematic discrepancies between results of different codes. In this joint paper, probabilistic fracture mechanical codes are compared. Crack initiation, crack growth and the influence of in-service inspections are analyzed. Example cases for stress corrosion cracking and fatigue in LWR conditions are analyzed. The evolution of annual failure probabilities during simulated operation time is investigated, in order to identify the reasons for differences in the results of different codes. The comparison of the tools is used for further improvements of the codes applied by the partners.",
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Comparative analysis of deterministic and probabilistic fracture mechanical assessment tools. / Heckmann, K.; Saifi, Q.

In: Kerntechnik, Vol. 81, No. 5, 2016, p. 484-497.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - Comparative analysis of deterministic and probabilistic fracture mechanical assessment tools

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AU - Saifi, Q.

PY - 2016

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N2 - Uncertainties in material properties, manufacturing processes, loading conditions and damage mechanisms complicate the quantification of structural reliability. Probabilistic structure mechanical computing codes serve as tools for assessing leakand break probabilities of nuclear piping components. Probabilistic fracture mechanical tools were compared in different benchmark activities, usually revealing minor, but systematic discrepancies between results of different codes. In this joint paper, probabilistic fracture mechanical codes are compared. Crack initiation, crack growth and the influence of in-service inspections are analyzed. Example cases for stress corrosion cracking and fatigue in LWR conditions are analyzed. The evolution of annual failure probabilities during simulated operation time is investigated, in order to identify the reasons for differences in the results of different codes. The comparison of the tools is used for further improvements of the codes applied by the partners.

AB - Uncertainties in material properties, manufacturing processes, loading conditions and damage mechanisms complicate the quantification of structural reliability. Probabilistic structure mechanical computing codes serve as tools for assessing leakand break probabilities of nuclear piping components. Probabilistic fracture mechanical tools were compared in different benchmark activities, usually revealing minor, but systematic discrepancies between results of different codes. In this joint paper, probabilistic fracture mechanical codes are compared. Crack initiation, crack growth and the influence of in-service inspections are analyzed. Example cases for stress corrosion cracking and fatigue in LWR conditions are analyzed. The evolution of annual failure probabilities during simulated operation time is investigated, in order to identify the reasons for differences in the results of different codes. The comparison of the tools is used for further improvements of the codes applied by the partners.

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DO - 10.3139/124.110725

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SP - 484

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