An improved experimental method for the determination of the critical stress intensity factor KIc of brittle materials

Prassianakis, JN

dc.contributor.author	Prassianakis, JN	en
dc.date.accessioned	2014-03-01T01:06:44Z
dc.date.available	2014-03-01T01:06:44Z
dc.date.issued	1987	en
dc.identifier.issn	0167-8442	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/9599
dc.subject	Experimental Method	en
dc.subject	Stress Intensity Factor	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.classification	Mechanics	en
dc.title	An improved experimental method for the determination of the critical stress intensity factor KIc of brittle materials	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/0167-8442(87)90017-6	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0167-8442(87)90017-6	en
heal.language	English	en
heal.publicationDate	1987	en
heal.abstract	The critical stress intensity factor KIc is determined by a simple and accurate method, using small test specimens and a simple procedure in this paper. Single edge V-notched tension specimens made of PMMA are subjected to a load which is slowly increased until the crack begins to move from the notch tip. During the crack propagation event shadow patterns at the tip of the crack are recorded in a video recorder. Under these loading conditions, the creating real crack propagate slowly until the crack propagation velocity take an abrupt increase and the entire fracture of the specimen takes place. The stress intensity factor which correspond to the transition from the slow to fast crack speed, is the critical stress intensity factor KIc and it can be the fracture toughness of the material. The results are accurate and in good agreement with those values of KIc which are calculated by approximate theoretical expressions. The purpose of this paper is to introduce an improved, simple and accurate experimental method for the determination of fracture toughness of brittle materials. © 1987.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Theoretical and Applied Fracture Mechanics	en
dc.identifier.doi	10.1016/0167-8442(87)90017-6	en
dc.identifier.isi	ISI:A1987J983500006	en
dc.identifier.volume	8	en
dc.identifier.issue	1	en
dc.identifier.spage	41	en
dc.identifier.epage	48	en