On the photoelastic determination of complex stress intensity factors

Ioakimidis, NI; Theocaris, PS

dc.contributor.author	Ioakimidis, NI	en
dc.contributor.author	Theocaris, PS	en
dc.date.accessioned	2014-03-01T01:05:46Z
dc.date.available	2014-03-01T01:05:46Z
dc.date.issued	1979	en
dc.identifier.issn	00137944	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/8981
dc.subject	Stress Intensity Factor	en
dc.subject.other	FRACTURE MECHANICS	en
dc.title	On the photoelastic determination of complex stress intensity factors	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/0013-7944(79)90089-4	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0013-7944(79)90089-4	en
heal.publicationDate	1979	en
heal.abstract	An improvement of the one-parameter extrapolation method of photoelastic determination of complex (mixed-mode) stress intensity factors at straight or curvilinear crack tips in a plane isotropic elastic medium due to Smith et al. [12, 13] can be achieved by measuring the absolute value of such a factor on the isochromatic fringes along properly selected polar directions and not at the maxima of the isochromatic fringes. In this way, the unknown value of the constant term of the stress field near the crack tip is taken into account. It is seen that it is always possible to find at least one appropriate polar direction to measure the absolute value of the stress intensity factor. In the case of Mode I stress intensity factors, these polar angles are θ{symbol} = ± 120° and not θ{symbol} = ± 90° as generally considered previously. Some numerical results are also presented in this special case and show the efficiency of the present method. © 1979.	en
heal.journalName	Engineering Fracture Mechanics	en
dc.identifier.doi	10.1016/0013-7944(79)90089-4	en
dc.identifier.volume	12	en
dc.identifier.issue	4	en
dc.identifier.spage	463	en
dc.identifier.epage	468	en