Propagation of a slant crack under impact studied by caustics

Theocaris, PS; Serafetinides, AA

dc.contributor.author	Theocaris, PS	en
dc.contributor.author	Serafetinides, AA	en
dc.date.accessioned	2014-03-01T01:06:18Z
dc.date.available	2014-03-01T01:06:18Z
dc.date.issued	1984	en
dc.identifier.issn	0734743X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/9306
dc.subject	Impact Studies	en
dc.subject.other	FRACTURE MECHANICS	en
dc.subject.other	MATERIALS TESTING - Impact	en
dc.subject.other	STRENGTH OF MATERIALS - Applications	en
dc.subject.other	CAUSTICS	en
dc.subject.other	IMPACT LOAD	en
dc.subject.other	LOAD PULSE	en
dc.subject.other	SLANT CRACK	en
dc.subject.other	STEADY CRACK VELOCITY	en
dc.subject.other	MATERIALS	en
dc.title	Propagation of a slant crack under impact studied by caustics	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/0734-743X(84)90009-5	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0734-743X(84)90009-5	en
heal.publicationDate	1984	en
heal.abstract	In the present paper the propagation of a slant crack under an impact load was studied by the method of caustics. An air gun was employed for the production of the load pulse. It was concluded that the steady crack velocity increases linearly with the angle of crack inclination, reaching a maximum value when the initial crack is normal to the load direction. The crack starts to propagate in the presence of both KI- and KII-stress intensity factors. The KII-factor has a maximum value of one-tenth of the KI-factor and an oscillatory character. This becomes zero in the first third of the crack-path, as the crack tends, gradually, to follow its final direction, normal to the direction of the applied pulse. An apparently distinctive effect relating the crack velocities and stress intensity factors may be concluded from the experimental results. For the same values of KI and KII, the crack propagates in some cases with different velocities, depending, apparently, on the initial crack inclination. It is believed that it is related to the validity of energy fracture-criteria and requires further study. © 1984.	en
heal.journalName	International Journal of Impact Engineering	en
dc.identifier.doi	10.1016/0734-743X(84)90009-5	en
dc.identifier.volume	2	en
dc.identifier.issue	3	en
dc.identifier.spage	251	en
dc.identifier.epage	261	en