Macroscopic criterion for craze initiation in polystyrene

Macroscopic failure of polystyrene has been investigated under pure shear and simple tension by isochronal static tests in air at room temperature. A number of crazes were clearly observed under both stress states. The craze initiation identified under pure shear provides an obvious counterevidence...

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Autores principales:	Makoto KAWAGOE, Hisashi FUJITA
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2017
Materias:	crazing shear flow pure shear criterion polystyrene Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/907a16a610c94b1b89cae27fad2d4d73
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spelling	oai:doaj.org-article:907a16a610c94b1b89cae27fad2d4d732021-11-26T07:11:27ZMacroscopic criterion for craze initiation in polystyrene2187-974510.1299/mej.17-00347https://doaj.org/article/907a16a610c94b1b89cae27fad2d4d732017-09-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/4/5/4_17-00347/_pdf/-char/enhttps://doaj.org/toc/2187-9745Macroscopic failure of polystyrene has been investigated under pure shear and simple tension by isochronal static tests in air at room temperature. A number of crazes were clearly observed under both stress states. The craze initiation identified under pure shear provides an obvious counterevidence to the current criteria, which involve explicitly the dilatational stress term as a requisite for craze initiation. A criterion expressed by a product form of the maximum principal stress and the maximum principal shear stress with an isotropic stress term was examined. The proposed criterion was marked to predict α priori a peculiar feature that the craze initiation never takes place under biaxial compression. A theoretical ratio of critical stress for craze initiation under pure shear to that under simple tension coincided with the experimental result.Makoto KAWAGOEHisashi FUJITAThe Japan Society of Mechanical Engineersarticlecrazingshear flowpure shearcriterionpolystyreneMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 4, Iss 5, Pp 17-00347-17-00347 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	crazing shear flow pure shear criterion polystyrene Mechanical engineering and machinery TJ1-1570
spellingShingle	crazing shear flow pure shear criterion polystyrene Mechanical engineering and machinery TJ1-1570 Makoto KAWAGOE Hisashi FUJITA Macroscopic criterion for craze initiation in polystyrene
description	Macroscopic failure of polystyrene has been investigated under pure shear and simple tension by isochronal static tests in air at room temperature. A number of crazes were clearly observed under both stress states. The craze initiation identified under pure shear provides an obvious counterevidence to the current criteria, which involve explicitly the dilatational stress term as a requisite for craze initiation. A criterion expressed by a product form of the maximum principal stress and the maximum principal shear stress with an isotropic stress term was examined. The proposed criterion was marked to predict α priori a peculiar feature that the craze initiation never takes place under biaxial compression. A theoretical ratio of critical stress for craze initiation under pure shear to that under simple tension coincided with the experimental result.
format	article
author	Makoto KAWAGOE Hisashi FUJITA
author_facet	Makoto KAWAGOE Hisashi FUJITA
author_sort	Makoto KAWAGOE
title	Macroscopic criterion for craze initiation in polystyrene
title_short	Macroscopic criterion for craze initiation in polystyrene
title_full	Macroscopic criterion for craze initiation in polystyrene
title_fullStr	Macroscopic criterion for craze initiation in polystyrene
title_full_unstemmed	Macroscopic criterion for craze initiation in polystyrene
title_sort	macroscopic criterion for craze initiation in polystyrene
publisher	The Japan Society of Mechanical Engineers
publishDate	2017
url	https://doaj.org/article/907a16a610c94b1b89cae27fad2d4d73
work_keys_str_mv	AT makotokawagoe macroscopiccriterionforcrazeinitiationinpolystyrene AT hisashifujita macroscopiccriterionforcrazeinitiationinpolystyrene
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Macroscopic criterion for craze initiation in polystyrene

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