The evolution of caustics from holes to cracks

Theocaris, PS

dc.contributor.author	Theocaris, PS	en
dc.date.accessioned	2014-03-01T01:05:36Z
dc.date.available	2014-03-01T01:05:36Z
dc.date.issued	1976	en
dc.identifier.issn	00207683	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/8898
dc.subject.other	STRESSES - Analysis	en
dc.subject.other	CRACKS	en
dc.subject.other	ELLIPTIC HOLES	en
dc.subject.other	ELLIPTICITY	en
dc.subject.other	METHOD OF CAUSTICS	en
dc.subject.other	FRACTURE MECHANICS	en
dc.title	The evolution of caustics from holes to cracks	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/0020-7683(76)90027-5	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0020-7683(76)90027-5	en
heal.publicationDate	1976	en
heal.abstract	The method of caustics was used for the study of the evolution of stress concentration around a circular hole, which progressively changes in shape and becomes an elliptic hole, tending to an internal crack. The influence of the amount of ellipticity of the holes and their orientation relative to the axis of the applied external loads at infinity on the form of caustics created around the discontinuity was studied, as the elliptic holes tended to become internal cracks. A series of experiments with tension specimens containing small elliptic holes of any ellipticity and orientation was performed. Comparison of experimentally obtained caustics with theory yielded a good agreement of both results. Finally, the use of small elliptic holes drilled all over a biaxial stress field for the determination of the individual principal stresses and the principal directions at the area of the holes was outlined. © 1976.	en
heal.journalName	International Journal of Solids and Structures	en
dc.identifier.doi	10.1016/0020-7683(76)90027-5	en
dc.identifier.volume	12	en
dc.identifier.issue	5	en
dc.identifier.spage	377	en
dc.identifier.epage	389	en