Rayleigh waves emitted by a propagating crack in a strain-rate dependent elastic medium

Theocaris, PS; Georgiadis, HG

dc.contributor.author	Theocaris, PS	en
dc.contributor.author	Georgiadis, HG	en
dc.date.accessioned	2014-03-01T01:06:19Z
dc.date.available	2014-03-01T01:06:19Z
dc.date.issued	1984	en
dc.identifier.issn	0022-5096	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/9310
dc.subject	Rayleigh Waves	en
dc.subject	Strain Rate	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.classification	Mechanics	en
dc.subject.classification	Physics, Condensed Matter	en
dc.subject.other	FRACTURE MECHANICS	en
dc.subject.other	SOLIDS - Stresses	en
dc.subject.other	STRESSES	en
dc.subject.other	ELASTIC MEDIUM	en
dc.subject.other	PROPAGATING CRACK	en
dc.subject.other	RAYLEIGH WAVES	en
dc.subject.other	STRAIN RATE	en
dc.subject.other	BARS	en
dc.title	Rayleigh waves emitted by a propagating crack in a strain-rate dependent elastic medium	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/0022-5096(84)90032-2	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0022-5096(84)90032-2	en
heal.language	English	en
heal.publicationDate	1984	en
heal.abstract	A simple model was proposed for the interpretation of the non-circular form of the Rayleigh wavefronts emitted by a fast running crack in a plate. The surface deformation around the crack tip, due to the high stress concentration there, propagated as a surface wave after fracture of this zone. On the other hand, the moving singularity of the crack tip created a dynamic stress field of varying intensity with time all over the specimen. This dynamic stress field resulted in a significant change of the mechanical properties of a strain-rate dependent material and therefore it influenced the velocity of propagation of fracture-Rayleigh wavefronts. An analysis of this varying dynamic strain field explained the non-circular form of Rayleigh waves, accompanying the propagating crack. For the experimental evaluation of the K1-factor the method of dynamic caustics was used in conjunction with the high-speed photography technique. © 1984.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Journal of the Mechanics and Physics of Solids	en
dc.identifier.doi	10.1016/0022-5096(84)90032-2	en
dc.identifier.isi	ISI:A1984TY80200004	en
dc.identifier.volume	32	en
dc.identifier.issue	6	en
dc.identifier.spage	491	en
dc.identifier.epage	510	en