Stress intensity factor determination error by the method of caustics

Spyropoulos, CP

dc.contributor.author	Spyropoulos, CP	en
dc.date.accessioned	2014-03-01T01:17:08Z
dc.date.available	2014-03-01T01:17:08Z
dc.date.issued	2001	en
dc.identifier.issn	0167-8442	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14373
dc.subject	Approximate Solution	en
dc.subject	Experimental Measurement	en
dc.subject	Stress Intensity Factor	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.classification	Mechanics	en
dc.subject.other	Cracks	en
dc.subject.other	Loading	en
dc.subject.other	Reflection	en
dc.subject.other	Crack tip	en
dc.subject.other	Stress intensity factors	en
dc.subject.other	stress intensity factor	en
dc.title	Stress intensity factor determination error by the method of caustics	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0167-8442(00)00059-8	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0167-8442(00)00059-8	en
heal.language	English	en
heal.publicationDate	2001	en
heal.abstract	The caustics created at a crack tip under biaxial loading are examined using both the closed form and the approximate solution. Particular attention is given to the caustics and their initial curves created by rays reflected from the rear and front surfaces of the specimen in addition to those in the transverse direction of the cracked specimen. These quantities can differ by more than 30% depending on whether the exact or the approximate solution is used for determining the stress intensity factors which can deviate as much as 80%. The crack length also affects the outcome. Larger errors are committed by the approximate solution for caustics that are closer to the crack tip. The advantage of using the normalized distance from the crack tip is discussed in contrast to using the absolute distance, Incorrect experimental measurements are also discussed in relation to the resulting error for evaluating the crack tip stress intensity factor. (C) 2001 Elsevier Science Ltd. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Theoretical and Applied Fracture Mechanics	en
dc.identifier.doi	10.1016/S0167-8442(00)00059-8	en
dc.identifier.isi	ISI:000168347200008	en
dc.identifier.volume	35	en
dc.identifier.issue	2	en
dc.identifier.spage	179	en
dc.identifier.epage	186	en