Secondary afterfailure fractures due to transversely reflected waves

Theocaris, PS

dc.contributor.author	Theocaris, PS	en
dc.date.accessioned	2014-03-01T01:38:20Z
dc.date.available	2014-03-01T01:38:20Z
dc.date.issued	1981	en
dc.identifier.issn	00137944	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/22046
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0019660592&partnerID=40&md5=0ec680ab6b1ce14a1dacbe84f8497208	en
dc.subject.other	FRACTURE MECHANICS	en
dc.title	Secondary afterfailure fractures due to transversely reflected waves	en
heal.type	journalArticle	en
heal.publicationDate	1981	en
heal.abstract	The method of caustics was employed to study dynamic crack propagation and after failure fracture in PMMA plates containing an almost longitudinal internal crack, forming a small angle with the loading axis. In order to initiate fracture a high strength longitudinal stress pulse was applied producing two symmetric transverse crack branches running under mode-I deformation with very high velocities. After complete fracture of the plate, the re-entrant corners between the initial slant crack and the two transverse crack branches become centers of emanation of new cracks under the influence of the transversely reflected stress pulses created during the rupture of the longitudinal boundaries. The secondary crack branches are strongly curved, propagate under mixed-mode conditions and arrest. During a third step of fracture the arrested secondary branches accelerate again forming new mixed-mode cracks, which are curved, zig-zaged and presenting sometimes local branchings. © 1981.	en
heal.journalName	Engineering Fracture Mechanics	en
dc.identifier.volume	15	en
dc.identifier.issue	3-4	en
dc.identifier.spage	283	en
dc.identifier.epage	290	en