Effect of loading rate and crack-tip blunting on crack propagation in rubber-toughened PMMA

Milios, J; Papanicolaou, GC; Young, RJ

dc.contributor.author	Milios, J	en
dc.contributor.author	Papanicolaou, GC	en
dc.contributor.author	Young, RJ	en
dc.date.accessioned	2014-03-01T01:39:36Z
dc.date.available	2014-03-01T01:39:36Z
dc.date.issued	1989	en
dc.identifier.issn	01446045	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/22898
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0024859910&partnerID=40&md5=589c4c946cff29382f56ba8b0c961e5a	en
dc.subject.other	Fracture Mechanics	en
dc.subject.other	Materials Testing--Fracture	en
dc.subject.other	Plastics--Toughening	en
dc.subject.other	Polymers--Mechanical Properties	en
dc.subject.other	Rubber	en
dc.subject.other	Crack Propagation Velocity	en
dc.subject.other	Crack Tip Blunting	en
dc.subject.other	Dynamic Stress Intensity	en
dc.subject.other	Loading Rate Effect	en
dc.subject.other	Rubber Toughened Polymers	en
dc.subject.other	Transmitted Caustics	en
dc.subject.other	Polymethyl Methacrylate	en
dc.title	Effect of loading rate and crack-tip blunting on crack propagation in rubber-toughened PMMA	en
heal.type	journalArticle	en
heal.publicationDate	1989	en
heal.abstract	The optical method of transmitted caustics has been used in conjunction with high-speed photography to study crack propagation in transparent samples of toughened poly(methyl methacrylate), containing a high volume fraction of rubber, over a large range of applied external loadings. The fracture behaviour of the material was investigated in terms of the variation of the dynamic stress intensity factor at the crack-tip with the crack propagation velocity. The effects of loading rate upon crack-tip blunting, due to the presence of rubber particles have been discussed. The crack-tip blunting appears to be responsible for an initial low speed crack propagation mode during which the crack accumulates energy at its tip before bursting through the plastic zone at its tip with a high crack propagation velocity. Subsequent propagation takes place by a 'stick/slip' process involving an alternation of crack initiation and arrest.	en
heal.journalName	Plastics and Rubber Processing and Applications	en
dc.identifier.volume	11	en
dc.identifier.issue	1	en
dc.identifier.spage	37	en
dc.identifier.epage	43	en