$Benchmark analyses of probabilistic fracture mechanics for cast stainless steel pipe$
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Benchmark analyses of probabilistic fracture mechanics for cast stainless steel pipe

Performance demonstration certification of non-destructive inspection for cast stainless steel (CASS) has been planned but the target flaw depth to be detected has not been determined yet in Japan. The target flaw size is closely connected to the allowable flaw size which is determined by flaw evalu...

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Autores principales:	Kiminobu HOJO, Shotaro HAYASHI, Wataru NISHI, Masayuki KAMAYA, Jinya KATSUYAMA, Koichi MASAKI, Masaki NAGAI, Toshiki OKAMOTO, Yasukazu TAKADA, Shinobu YOSHIMURA
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2016
Materias:	probabilistic fracture mechanics (pfm) cast stainless steel net section criterion ductile fracture limit load j-integral tow-parameters method j-t criterion allowable flaw rules for fitness-for-service Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/6b8f36aec73649b380916388423e7ae4
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spelling	oai:doaj.org-article:6b8f36aec73649b380916388423e7ae42021-11-26T06:53:45ZBenchmark analyses of probabilistic fracture mechanics for cast stainless steel pipe2187-974510.1299/mej.16-00083https://doaj.org/article/6b8f36aec73649b380916388423e7ae42016-06-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/3/4/3_16-00083/_pdf/-char/enhttps://doaj.org/toc/2187-9745Performance demonstration certification of non-destructive inspection for cast stainless steel (CASS) has been planned but the target flaw depth to be detected has not been determined yet in Japan. The target flaw size is closely connected to the allowable flaw size which is determined by flaw evaluation of the rules on fitness-for-service. However duplex micro-structure of CASS makes low permeability of ultrasonic wave and large flaw size of UT detectability, which might not be acceptable by flaw evaluation. The current JSME rules for fitness-for-service allow only deterministic procedure. For rational mitigation of the acceptable flaw size, application of probabilistic fracture mechanics (PFM) is one of the useful countermeasures. In the paper, benchmark problems for a CASS pipe were proposed with intention applying and verifying PFM codes to CASS pipe's issue. As the fracture modes, fatigue crack extension, plastic collapse and ductile crack initiation were assumed. The PFM analyses were performed in the condition of the combination of crack extension and plastic collapse or ductile fracture to verify the basic functions of the PFM codes. Six organizations participated in the benchmark analysis and failure probabilities from them were compared. As a result the failure probability of each problem by each code showed good agreement and the code for application of CASS issue has been verified. The sensitivity of the failure criterion on the failure probability was discussed.Kiminobu HOJOShotaro HAYASHIWataru NISHIMasayuki KAMAYAJinya KATSUYAMAKoichi MASAKIMasaki NAGAIToshiki OKAMOTOYasukazu TAKADAShinobu YOSHIMURAThe Japan Society of Mechanical Engineersarticleprobabilistic fracture mechanics (pfm)cast stainless steelnet section criterionductile fracturelimit loadj-integraltow-parameters methodj-t criterionallowable flawrules for fitness-for-serviceMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 3, Iss 4, Pp 16-00083-16-00083 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	probabilistic fracture mechanics (pfm) cast stainless steel net section criterion ductile fracture limit load j-integral tow-parameters method j-t criterion allowable flaw rules for fitness-for-service Mechanical engineering and machinery TJ1-1570
spellingShingle	probabilistic fracture mechanics (pfm) cast stainless steel net section criterion ductile fracture limit load j-integral tow-parameters method j-t criterion allowable flaw rules for fitness-for-service Mechanical engineering and machinery TJ1-1570 Kiminobu HOJO Shotaro HAYASHI Wataru NISHI Masayuki KAMAYA Jinya KATSUYAMA Koichi MASAKI Masaki NAGAI Toshiki OKAMOTO Yasukazu TAKADA Shinobu YOSHIMURA Benchmark analyses of probabilistic fracture mechanics for cast stainless steel pipe
description	Performance demonstration certification of non-destructive inspection for cast stainless steel (CASS) has been planned but the target flaw depth to be detected has not been determined yet in Japan. The target flaw size is closely connected to the allowable flaw size which is determined by flaw evaluation of the rules on fitness-for-service. However duplex micro-structure of CASS makes low permeability of ultrasonic wave and large flaw size of UT detectability, which might not be acceptable by flaw evaluation. The current JSME rules for fitness-for-service allow only deterministic procedure. For rational mitigation of the acceptable flaw size, application of probabilistic fracture mechanics (PFM) is one of the useful countermeasures. In the paper, benchmark problems for a CASS pipe were proposed with intention applying and verifying PFM codes to CASS pipe's issue. As the fracture modes, fatigue crack extension, plastic collapse and ductile crack initiation were assumed. The PFM analyses were performed in the condition of the combination of crack extension and plastic collapse or ductile fracture to verify the basic functions of the PFM codes. Six organizations participated in the benchmark analysis and failure probabilities from them were compared. As a result the failure probability of each problem by each code showed good agreement and the code for application of CASS issue has been verified. The sensitivity of the failure criterion on the failure probability was discussed.
format	article
author	Kiminobu HOJO Shotaro HAYASHI Wataru NISHI Masayuki KAMAYA Jinya KATSUYAMA Koichi MASAKI Masaki NAGAI Toshiki OKAMOTO Yasukazu TAKADA Shinobu YOSHIMURA
author_facet	Kiminobu HOJO Shotaro HAYASHI Wataru NISHI Masayuki KAMAYA Jinya KATSUYAMA Koichi MASAKI Masaki NAGAI Toshiki OKAMOTO Yasukazu TAKADA Shinobu YOSHIMURA
author_sort	Kiminobu HOJO
title	Benchmark analyses of probabilistic fracture mechanics for cast stainless steel pipe
title_short	Benchmark analyses of probabilistic fracture mechanics for cast stainless steel pipe
title_full	Benchmark analyses of probabilistic fracture mechanics for cast stainless steel pipe
title_fullStr	Benchmark analyses of probabilistic fracture mechanics for cast stainless steel pipe
title_full_unstemmed	Benchmark analyses of probabilistic fracture mechanics for cast stainless steel pipe
title_sort	benchmark analyses of probabilistic fracture mechanics for cast stainless steel pipe
publisher	The Japan Society of Mechanical Engineers
publishDate	2016
url	https://doaj.org/article/6b8f36aec73649b380916388423e7ae4
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_version_	1718409722888978432

Benchmark analyses of probabilistic fracture mechanics for cast stainless steel pipe

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