The reflected caustics method for the evaluation of mode III stress intensity factor

Theocaris, PS

dc.contributor.author	Theocaris, PS	en
dc.date.accessioned	2014-03-01T01:06:00Z
dc.date.available	2014-03-01T01:06:00Z
dc.date.issued	1981	en
dc.identifier.issn	0020-7403	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/9116
dc.subject	Stress Intensity Factor	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.classification	Mechanics	en
dc.subject.other	STRUCTURAL ANALYSIS - Measurements	en
dc.subject.other	STRESSES	en
dc.title	The reflected caustics method for the evaluation of mode III stress intensity factor	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/0020-7403(81)90075-8	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0020-7403(81)90075-8	en
heal.language	English	en
heal.publicationDate	1981	en
heal.abstract	The optical method of reflected caustics, which has been applied to the evaluation of stress intensity factors in cracked plates deformed under mode I and II, is extended in this paper to the evaluation of the same factor in cracked plates subjected to mode III deformation. It is shown that the method of reflected caustics is capable of detecting and evaluating this factor, whereas all the other experimental methods, i.e. photoelasticity, holographic interferometry and especially the method of transmitted caustics are incapable to yield this quantity. Based on the first-order approximation of the elastic solution around the crack tip and on Sneddon's formulas, the theory of formation of the reflected caustics is developed and the characteristic geometric properties of this envelope curve are defined. It is shown that this envelope is again a generalized epicycloid, whose characteristic dimensions are directly related to KIII. Experimental evidence with specimens made of optically isotropic materials (plexiglas), elastically loaded, has corroborated the theoretical results. © 1981.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	International Journal of Mechanical Sciences	en
dc.identifier.doi	10.1016/0020-7403(81)90075-8	en
dc.identifier.isi	ISI:A1981LQ05400006	en
dc.identifier.volume	23	en
dc.identifier.issue	2	en
dc.identifier.spage	105	en
dc.identifier.epage	117	en