J-integral evaluation methods for cylinders with multiple circumferential cracks subjected to bending moments

This paper describes the J-integral evaluation methods for the case of multiple circumferential cracks in a cylinder subjected to bending moments. J-integral is one of the parameters of fracture mechanics used in the fracture assessment of materials that show ductile fracture behavior. So far, there...

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Autores principales:	Hideo MACHIDA, Toshiki OKAMOTO, Takuya OGAWA, Shinji YOSHIDA
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2018
Materias:	multiple cracks piping j-integral fracture evaluation fracture mechanics ductile fracture Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/43b0c22065a146ab823daad7efcd2521
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spelling	oai:doaj.org-article:43b0c22065a146ab823daad7efcd25212021-11-26T07:20:09ZJ-integral evaluation methods for cylinders with multiple circumferential cracks subjected to bending moments2187-974510.1299/mej.17-00605https://doaj.org/article/43b0c22065a146ab823daad7efcd25212018-06-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/5/3/5_17-00605/_pdf/-char/enhttps://doaj.org/toc/2187-9745This paper describes the J-integral evaluation methods for the case of multiple circumferential cracks in a cylinder subjected to bending moments. J-integral is one of the parameters of fracture mechanics used in the fracture assessment of materials that show ductile fracture behavior. So far, there have been various J-integral evaluation methods proposed for a single crack in a cylinder, such as fully plastic solutions and a reference stress method, but none for multiple circumferential cracks. Therefore, this study examines the stress intensity factor evaluation method for cylinders with multiple circumferential cracks. This method estimates the stress intensity factor of multiple circumferential cracks in a cylinder based on a solution for single cracks. Next, a J-integral evaluation method based on the reference stress method is proposed. With this method, the reference stress is calculated from the plastic collapse strength of a cylinder with multiple cracks. The proposed methods have generality to the crack dimensions (sizes and positions) and the material characteristics of the cylinder, and were effective in predicting the J-integral simply and with high accuracy.Hideo MACHIDAToshiki OKAMOTOTakuya OGAWAShinji YOSHIDAThe Japan Society of Mechanical Engineersarticlemultiple crackspipingj-integralfracture evaluationfracture mechanicsductile fractureMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 5, Iss 3, Pp 17-00605-17-00605 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	multiple cracks piping j-integral fracture evaluation fracture mechanics ductile fracture Mechanical engineering and machinery TJ1-1570
spellingShingle	multiple cracks piping j-integral fracture evaluation fracture mechanics ductile fracture Mechanical engineering and machinery TJ1-1570 Hideo MACHIDA Toshiki OKAMOTO Takuya OGAWA Shinji YOSHIDA J-integral evaluation methods for cylinders with multiple circumferential cracks subjected to bending moments
description	This paper describes the J-integral evaluation methods for the case of multiple circumferential cracks in a cylinder subjected to bending moments. J-integral is one of the parameters of fracture mechanics used in the fracture assessment of materials that show ductile fracture behavior. So far, there have been various J-integral evaluation methods proposed for a single crack in a cylinder, such as fully plastic solutions and a reference stress method, but none for multiple circumferential cracks. Therefore, this study examines the stress intensity factor evaluation method for cylinders with multiple circumferential cracks. This method estimates the stress intensity factor of multiple circumferential cracks in a cylinder based on a solution for single cracks. Next, a J-integral evaluation method based on the reference stress method is proposed. With this method, the reference stress is calculated from the plastic collapse strength of a cylinder with multiple cracks. The proposed methods have generality to the crack dimensions (sizes and positions) and the material characteristics of the cylinder, and were effective in predicting the J-integral simply and with high accuracy.
format	article
author	Hideo MACHIDA Toshiki OKAMOTO Takuya OGAWA Shinji YOSHIDA
author_facet	Hideo MACHIDA Toshiki OKAMOTO Takuya OGAWA Shinji YOSHIDA
author_sort	Hideo MACHIDA
title	J-integral evaluation methods for cylinders with multiple circumferential cracks subjected to bending moments
title_short	J-integral evaluation methods for cylinders with multiple circumferential cracks subjected to bending moments
title_full	J-integral evaluation methods for cylinders with multiple circumferential cracks subjected to bending moments
title_fullStr	J-integral evaluation methods for cylinders with multiple circumferential cracks subjected to bending moments
title_full_unstemmed	J-integral evaluation methods for cylinders with multiple circumferential cracks subjected to bending moments
title_sort	j-integral evaluation methods for cylinders with multiple circumferential cracks subjected to bending moments
publisher	The Japan Society of Mechanical Engineers
publishDate	2018
url	https://doaj.org/article/43b0c22065a146ab823daad7efcd2521
work_keys_str_mv	AT hideomachida jintegralevaluationmethodsforcylinderswithmultiplecircumferentialcrackssubjectedtobendingmoments AT toshikiokamoto jintegralevaluationmethodsforcylinderswithmultiplecircumferentialcrackssubjectedtobendingmoments AT takuyaogawa jintegralevaluationmethodsforcylinderswithmultiplecircumferentialcrackssubjectedtobendingmoments AT shinjiyoshida jintegralevaluationmethodsforcylinderswithmultiplecircumferentialcrackssubjectedtobendingmoments
_version_	1718409652430962688

J-integral evaluation methods for cylinders with multiple circumferential cracks subjected to bending moments

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