Experimental evaluation of stress-optical constants by caustics

Badalouka, B; Papadopoulos, GA

dc.contributor.author	Badalouka, B	en
dc.contributor.author	Papadopoulos, GA	en
dc.date.accessioned	2014-03-01T01:35:40Z
dc.date.available	2014-03-01T01:35:40Z
dc.date.issued	2011	en
dc.identifier.issn	0376-9429	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21156
dc.subject	caustics	en
dc.subject	contact problems	en
dc.subject	cracks	en
dc.subject	stress intensity factors	en
dc.subject.classification	Mechanics	en
dc.subject.other	caustics	en
dc.subject.other	contact problems	en
dc.subject.other	Experimental evaluation	en
dc.subject.other	Neighbourhood	en
dc.subject.other	Plexiglas	en
dc.subject.other	State of stress	en
dc.subject.other	Stress intensity	en
dc.subject.other	Stress intensity factor K	en
dc.subject.other	Three-dimensional stress	en
dc.subject.other	Triaxiality	en
dc.subject.other	Crack tips	en
dc.subject.other	Cracks	en
dc.subject.other	Stress intensity factors	en
dc.subject.other	Optical constants	en
dc.title	Experimental evaluation of stress-optical constants by caustics	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/s10704-011-9615-9	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s10704-011-9615-9	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	A study of the experimental evaluation of the stress-optical constants accurate values was undertaken by the method of caustics. A series of experiments were performed in single edge-cracked specimens made of Plexiglas (PMMA). It was found that the values of the stress-optical constants were varied with the load and the thickness of the specimens. This means that a three-dimensional stress conditions hold in the neighbourhood of the crack tip. The accurate stress intensity factor KI can be experimentally evaluated by accurate values of the stress-optical constants. The present work illuminates the complicated problem of the changing state of stress around cracks and establishes the limits of applicability of the method of caustics for the evaluation of stress intensity factors and the triaxiality factor at crack tip © 2011 Springer Science+Business Media B.V.	en
heal.publisher	SPRINGER	en
heal.journalName	International Journal of Fracture	en
dc.identifier.doi	10.1007/s10704-011-9615-9	en
dc.identifier.isi	ISI:000297620900008	en
dc.identifier.volume	171	en
dc.identifier.issue	1	en
dc.identifier.spage	85	en
dc.identifier.epage	90	en