The angle of initiation and propagation of cracks in ductile media

Theocaris, PS; Andrianopoulos, NP; Kourkoulis, S

dc.contributor.author	Theocaris, PS	en
dc.contributor.author	Andrianopoulos, NP	en
dc.contributor.author	Kourkoulis, S	en
dc.date.accessioned	2014-03-01T01:07:00Z
dc.date.available	2014-03-01T01:07:00Z
dc.date.issued	1987	en
dc.identifier.issn	0014-4851	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/9730
dc.subject	Crack Initiation	en
dc.subject	Experimental Data	en
dc.subject	Rigid Body	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.classification	Mechanics	en
dc.subject.classification	Materials Science, Characterization & Testing	en
dc.subject.other	ALUMINUM AND ALLOYS - Crack Propagation	en
dc.subject.other	ALUMINUM ZINC ALLOYS - Crack Propagation	en
dc.subject.other	FRACTURE MECHANICS	en
dc.subject.other	PLATES - Crack Propagation	en
dc.subject.other	ALLOY 7075	en
dc.subject.other	ALLOY A-U2G	en
dc.subject.other	CRACK INITIATION ANGLE	en
dc.subject.other	DUCTILE FRACTURE	en
dc.subject.other	FRACTURE ANGLE	en
dc.subject.other	METALS AND ALLOYS	en
dc.title	The angle of initiation and propagation of cracks in ductile media	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/BF02319462	en
heal.identifier.secondary	http://dx.doi.org/10.1007/BF02319462	en
heal.language	English	en
heal.publicationDate	1987	en
heal.abstract	A systematic study of the angle of crack initiation in cracked plates of ductile materials is presented. A method of measurement is proposed concerning the gathering of the experimental data and their statistical treatment. It is shown that the slope of either the bisector, or the middle line of the extending crack branches can equally well represent this angle. It is also shown that post-mortem measurements always result in absolutely lower values of this quantity, as they are compared to in-vivo measurements. Post-mortem measurements constitute a significant source of errors. A second considerable source of errors is ignorance of the rigid-body rotation of the initial crack. An evaluation of the magnitude of this rotation can be obtained experimentally by the moiré method. The corrected results are in good agreement with the theoretical predictions of the T criterion. © 1987 Society for Experimental Mechanics, Inc.	en
heal.publisher	Kluwer Academic Publishers	en
heal.journalName	Experimental Mechanics	en
dc.identifier.doi	10.1007/BF02319462	en
dc.identifier.isi	ISI:A1987J215100002	en
dc.identifier.volume	27	en
dc.identifier.issue	2	en
dc.identifier.spage	120	en
dc.identifier.epage	125	en