A simple method for the photoelastic determination of mode I stress intensity factors

Ioakimidis, NI; Theocaris, PS

dc.contributor.author	Ioakimidis, NI	en
dc.contributor.author	Theocaris, PS	en
dc.date.accessioned	2014-03-01T01:05:40Z
dc.date.available	2014-03-01T01:05:40Z
dc.date.issued	1978	en
dc.identifier.issn	00137944	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/8926
dc.subject	Stress Intensity Factor	en
dc.subject.other	FRACTURE MECHANICS	en
dc.title	A simple method for the photoelastic determination of mode I stress intensity factors	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/0013-7944(78)90072-3	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0013-7944(78)90072-3	en
heal.publicationDate	1978	en
heal.abstract	A new simple method for the photoelastic determination of Mode I stress intensity factors from isochromatics is proposed. This method takes into account the fact that a considerable part of the error committed in the photoelastic determination of Mode I stress intensity factors KI at crack tips, based on experimentally obtained isochromatic fringe patterns, is due to ignoring the non-singular part of the stress field near the crack tips for the evaluation of these factors. This error can, in most cases, be minimized by an appropriate selection of the polar direction from the crack tip on which the experimental measurements for the subsequent evaluation of the stress intensity factors KI are made. The suitable polar direction for determining KI depends in general on the distance of the point where measurements on the isochromatics are made from the crack tip. The method was applied to the problem of a simple crack inside an infinite medium under uniaxial and biaxial loading. A comparison of the present method whith the employed analogous methods shows the superiority of the proposed method. © 1978.	en
heal.journalName	Engineering Fracture Mechanics	en
dc.identifier.doi	10.1016/0013-7944(78)90072-3	en
dc.identifier.volume	10	en
dc.identifier.issue	3	en
dc.identifier.spage	677	en
dc.identifier.epage	684	en