Blunting of cracks of intermediate states of stress by scanning electron microscopy

Theocaris, PS; Kytopoulos, V; Stassinakis, C

dc.contributor.author	Theocaris, PS	en
dc.contributor.author	Kytopoulos, V	en
dc.contributor.author	Stassinakis, C	en
dc.date.accessioned	2014-03-01T01:07:23Z
dc.date.available	2014-03-01T01:07:23Z
dc.date.issued	1989	en
dc.identifier.issn	00222461	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/9973
dc.subject	Scanning Electron Microscope	en
dc.subject	Scanning Electron Microscopy	en
dc.subject	Aspect Ratio	en
dc.subject.other	Microscopic Examination--Scanning Electron Microscopy	en
dc.subject.other	Polycarbonates--Fracture	en
dc.subject.other	Crack Blunting	en
dc.subject.other	Crack Opening Displacement	en
dc.subject.other	Metals and Alloys	en
dc.title	Blunting of cracks of intermediate states of stress by scanning electron microscopy	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/BF01148808	en
heal.identifier.secondary	http://dx.doi.org/10.1007/BF01148808	en
heal.publicationDate	1989	en
heal.abstract	A study of ductile blunting edge cracks in tensile specimens was undertaken in this paper by detecting the forms of different stages of blunting of the cracks under conditions of mode-l deformation as the loading progressed. All three main types of blunting were detected, with identical specimens and cracks, that is, the rounded off, the multicornered and the pointed type, depending on the particular accidental instabilities appearing in the vicinity of the crack tip as the blunting process is progressing. It was shown that an intermediate type of blunting was detected on the surfaces of the specimens by the scanning electron microscope (SEM) and this was explained by the fact that at the surfaces of specimens possessing a significant thickness to width aspect ratio the state of stress at the surface is strongly influenced by the plane stress conditions prevailing at the lateral faces of the specimens. © 1989 Chapman and Hall Ltd.	en
heal.publisher	Kluwer Academic Publishers	en
heal.journalName	Journal of Materials Science	en
dc.identifier.doi	10.1007/BF01148808	en
dc.identifier.volume	24	en
dc.identifier.issue	3	en
dc.identifier.spage	1121	en
dc.identifier.epage	1127	en