Investigation by scanning electron microscope of the effect of geometry and loading mode on blunting of copper sheets

Theocaris, PS; Kytopoulos, VN

dc.contributor.author	Theocaris, PS	en
dc.contributor.author	Kytopoulos, VN	en
dc.date.accessioned	2014-03-01T01:08:54Z
dc.date.available	2014-03-01T01:08:54Z
dc.date.issued	1992	en
dc.identifier.issn	0022-2461	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10724
dc.subject	Copper	en
dc.subject	Crack Growth	en
dc.subject	Crack Opening Displacement	en
dc.subject	Crack Propagation	en
dc.subject	Experimental Study	en
dc.subject	Scanning Electron Microscope	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.other	OPENING DISPLACEMENT	en
dc.subject.other	CRACK TIP	en
dc.subject.other	STRESS	en
dc.title	Investigation by scanning electron microscope of the effect of geometry and loading mode on blunting of copper sheets	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/BF01151842	en
heal.identifier.secondary	http://dx.doi.org/10.1007/BF01151842	en
heal.language	English	en
heal.publicationDate	1992	en
heal.abstract	Ductile blunting and fracture under conditions of plane stress in metals are described by two main phases: static crack growth, and slow crack propagation. In the first phase the crack tip is deformed in an elastic-plastic mode, the main characteristics of which are the formation of the plastic enclave around the crack tip, and the evolution of blunting. In the second phase the crack propagates through expansion and coalescence of microvoids and microdefects developed at the vicinity of and in front of the crack tip. Ductile blunting under plane-stress conditions in metallic plates was studied, and the influence of the geometry and the mode of loading specimens was defined. This was achieved by interrelating the amount of crack opening displacement at its tip, and its comparable effect of the crack tip advance displacement. The experimental study was executed in a scanning electron microscope with thin specimens under dominating plane-stress conditions. The mechanism of development of ductile blunting up to the point of initiation of slow crack propagation was interrelated with these characteristic quantities. © 1992 Chapman & Hall.	en
heal.publisher	Kluwer Academic Publishers	en
heal.journalName	Journal of Materials Science	en
dc.identifier.doi	10.1007/BF01151842	en
dc.identifier.isi	ISI:A1992JD68400028	en
dc.identifier.volume	27	en
dc.identifier.issue	13	en
dc.identifier.spage	3624	en
dc.identifier.epage	3636	en