The topography of the core-region around cracks under modes I, II and III of fracture

Theocaris, PS; Pazis, D

dc.contributor.author	Theocaris, PS	en
dc.contributor.author	Pazis, D	en
dc.date.accessioned	2014-03-01T01:06:13Z
dc.date.available	2014-03-01T01:06:13Z
dc.date.issued	1983	en
dc.identifier.issn	00207403	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/9239
dc.subject.other	FRACTURE MECHANICS	en
dc.title	The topography of the core-region around cracks under modes I, II and III of fracture	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/0020-7403(83)90005-X	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0020-7403(83)90005-X	en
heal.publicationDate	1983	en
heal.abstract	The core region, defined as the limiting zone of validity of the various brittle fracture criteria, has been intuitively assumed as a circle. Its experimental determination is based here on a simple asymptotic elastic theory and a verification by the method of reflected caustics. This definition covers the three modes of deformation at the surroundings of the crack tip. For each mode the initial curve of the caustic, which for isotropic elastic materials is always a circle, yields the limits of validity of the linear elastic theory and corresponds to the boundary of the core region. Experimental evidence with profilometers and projected-grating techniques indicates a similar nature of the deformed surfaces adjacent to the crack tip, as this given by the asymptotic analysis theory of stress and displacement distribution around the crack-tip. © 1983.	en
heal.journalName	International Journal of Mechanical Sciences	en
dc.identifier.doi	10.1016/0020-7403(83)90005-X	en
dc.identifier.volume	25	en
dc.identifier.issue	2	en
dc.identifier.spage	121	en
dc.identifier.epage	136	en