Mechanism of plastic deformation for polycarbonate under compression by a laser extensometer technique

Spathis, G; Kontou, E

dc.contributor.author	Spathis, G	en
dc.contributor.author	Kontou, E	en
dc.date.accessioned	2014-03-01T01:16:44Z
dc.date.available	2014-03-01T01:16:44Z
dc.date.issued	2001	en
dc.identifier.issn	0021-8995	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14187
dc.subject	Plastic Deformation	en
dc.subject.classification	Polymer Science	en
dc.subject.other	Compression testing	en
dc.subject.other	Laser applications	en
dc.subject.other	Plastic deformation	en
dc.subject.other	Polymeric glass	en
dc.subject.other	Strain	en
dc.subject.other	Laser extensometers	en
dc.subject.other	Polycarbonates	en
dc.title	Mechanism of plastic deformation for polycarbonate under compression by a laser extensometer technique	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/1097-4628(20010401)79:14<2534::AID-APP1062>3.0.CO;2-G	en
heal.identifier.secondary	http://dx.doi.org/10.1002/1097-4628(20010401)79:14<2534::AID-APP1062>3.0.CO;2-G	en
heal.language	English	en
heal.publicationDate	2001	en
heal.abstract	The large strain behavior of a glassy polymer was studied in terms of compression tests at various rates, while the local deformation was evaluated with a noncontact laser extensometer. The main features of yield and postyielding were described with a constitutive model from nonlinear viscoelasticity, combined with a kinematic formulation for the separation of total deformation into a viscoelastic and a plastic part, respectively. The concept of plastic shear transformations introduced Elsewhere was used to develop a mathematical model for the rate of plastic deformation. The entire experimental true stress-strain curves (including strain hardening and strain softening) could, through this model, be identified in a self-consistent manner. (C) 2001 John Wiley & Sons, Inc.	en
heal.publisher	JOHN WILEY & SONS INC	en
heal.journalName	Journal of Applied Polymer Science	en
dc.identifier.doi	10.1002/1097-4628(20010401)79:14<2534::AID-APP1062>3.0.CO;2-G	en
dc.identifier.isi	ISI:000166698300004	en
dc.identifier.volume	79	en
dc.identifier.issue	14	en
dc.identifier.spage	2534	en
dc.identifier.epage	2542	en