Dynamic propagation and arrest measurements by the method of caustics on overlapping skew-parallel cracks

Theocaris, PS

dc.contributor.author	Theocaris, PS	en
dc.date.accessioned	2014-03-01T01:05:41Z
dc.date.available	2014-03-01T01:05:41Z
dc.date.issued	1978	en
dc.identifier.issn	0020-7683	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/8933
dc.subject.classification	Mechanics	en
dc.subject.other	DYNAMICS	en
dc.subject.other	OPTICAL VARIABLES MEASUREMENT	en
dc.subject.other	POLYMERS	en
dc.subject.other	BRITTLE MATERIALS	en
dc.subject.other	METHOD OF CAUSTICS	en
dc.subject.other	MATERIALS	en
dc.title	Dynamic propagation and arrest measurements by the method of caustics on overlapping skew-parallel cracks	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/0020-7683(78)90003-3	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0020-7683(78)90003-3	en
heal.language	English	en
heal.publicationDate	1978	en
heal.abstract	In this paper the quasi-static and dynamic behaviour of two skew-parallel and unequal edge cracks in a brittle material, namely PMMA, was investigated. The study was undertaken by using the optical method of caustics in combination with a high-speed Cranz-Schardin camera for recording the various steps of the statically or the dynamically propagated cracks. From the whole study it was deduced that, for the case of the quasi-static loading and for all geometrical configurations of cracks, only the longer crack was propagated, while the shorter crack remained stationary. The propagation path of the longer crack curved towards the opposite edge crack. Both edge cracks propagated simultaneously only under the dynamic loading mode and under certain favourable combinations of the geometrical configurations of the cracked specimen. Both edge cracks curved, under quasi-static loading and strong tendency for crack arrest phenomena was observed. The values of the crack propagation velocity and the stress intensity factors for both cracks were determined and were found to be larger for the dynamic than for the quasi-static loading case. © 1978.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	International Journal of Solids and Structures	en
dc.identifier.doi	10.1016/0020-7683(78)90003-3	en
dc.identifier.isi	ISI:A1978FP44900003	en
dc.identifier.volume	14	en
dc.identifier.issue	8	en
dc.identifier.spage	639	en
dc.identifier.epage	653	en