Crack deceleration and arrest phenomena at an oblique bimaterial interface

Theocaris, PS; Pazis, D

dc.contributor.author	Theocaris, PS	en
dc.contributor.author	Pazis, D	en
dc.date.accessioned	2014-03-01T01:06:09Z
dc.date.available	2014-03-01T01:06:09Z
dc.date.issued	1983	en
dc.identifier.issn	0020-7683	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/9189
dc.subject.classification	Mechanics	en
dc.subject.other	COMPOSITE MATERIALS - Crack Propagation	en
dc.subject.other	MATERIALS TESTING - Optical Properties	en
dc.subject.other	PLATES	en
dc.title	Crack deceleration and arrest phenomena at an oblique bimaterial interface	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/0020-7683(83)90015-X	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0020-7683(83)90015-X	en
heal.language	English	en
heal.publicationDate	1983	en
heal.abstract	The method of caustics with high-speed photography was employed to study the dynamic behavior of a transverse crack in bimaterial plates, with slant interfaces. Both phases of the specimens were fabricated from epoxy-polymers by casting the one phase successively after the other along its oblique boundary. The results have shown that the cracks propagate, in general, under mode-I conditions and that the interface acts as a decelerator for the propagating crack, which, after passing the obstacle of the interface region, accelerates. The observed decelerations and accelerations were always greater in the brittle phases than those of the ductile ones. The influence of the interface region to the crack propagation velocities was found to be more intense, when the crack propagates from a more brittle to a more ductile phase, than in the opposite case. The zone of interaction of the crack with the interface was wide in the case of the inclined interface, increasing with the angle between interface and the loading axis. In this zone the stress intensity factor at first increases, then decreases to a minimum value on the interface and again increases, as the crack enters in the second phase. The crack paths were always slightly curved with a discontinuous tangent at the interface. © 1983.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	International Journal of Solids and Structures	en
dc.identifier.doi	10.1016/0020-7683(83)90015-X	en
dc.identifier.isi	ISI:A1983RC10300005	en
dc.identifier.volume	19	en
dc.identifier.issue	7	en
dc.identifier.spage	611	en
dc.identifier.epage	623	en