An Experimental and Analytical Study of the Large Strain Response of Glassy Polymers with a Noncontact Laser Extensometer

Spathis, G; Kontou, E

dc.contributor.author	Spathis, G	en
dc.contributor.author	Kontou, E	en
dc.date.accessioned	2014-03-01T01:14:23Z
dc.date.available	2014-03-01T01:14:23Z
dc.date.issued	1999	en
dc.identifier.issn	0021-8995	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13042
dc.subject	Deformation	en
dc.subject	Glassy polymers	en
dc.subject	Noncontact measurement	en
dc.subject	Stress-strain response	en
dc.subject	Yield behavior	en
dc.subject.classification	Polymer Science	en
dc.subject.other	Dilatometers	en
dc.subject.other	Kinematics	en
dc.subject.other	Laser applications	en
dc.subject.other	Mathematical models	en
dc.subject.other	Plastic deformation	en
dc.subject.other	Strain rate	en
dc.subject.other	Tensile stress	en
dc.subject.other	Viscoelasticity	en
dc.subject.other	Yield stress	en
dc.subject.other	Noncontact laser extensometers	en
dc.subject.other	Noncontact measurements	en
dc.subject.other	Polymeric glass	en
dc.title	An Experimental and Analytical Study of the Large Strain Response of Glassy Polymers with a Noncontact Laser Extensometer	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/(SICI)1097-4628(19990321)71:12<2007::AID-APP10>3.0.CO;2-W	en
heal.identifier.secondary	http://dx.doi.org/10.1002/(SICI)1097-4628(19990321)71:12<2007::AID-APP10>3.0.CO;2-W	en
heal.language	English	en
heal.publicationDate	1999	en
heal.abstract	The yield behavior of an amorphous glassy polymer has been studied with true tensile stress-strain curves, obtained at various crosshead speeds by means of a new experimental method. A constitutive equation from nonlinear viscoelasticity has been used, with the further assumption that the material, during deformation, subsequently follows the following two distinct paths: a nonlinear viscoelastic, and a plastic one. The maximum strain, where this distinction is manifested, has been treated as a control parameter, while the strain rate was experimentally evaluated. The decomposition of deformation has been made with a suitable kinematic formulation, proposed in the literature. The theoretical results describe the experimental curves in detail. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 71: 2007-2015, 1999.	en
heal.publisher	JOHN WILEY & SONS INC	en
heal.journalName	Journal of Applied Polymer Science	en
dc.identifier.doi	10.1002/(SICI)1097-4628(19990321)71:12<2007::AID-APP10>3.0.CO;2-W	en
dc.identifier.isi	ISI:000078242800010	en
dc.identifier.volume	71	en
dc.identifier.issue	12	en
dc.identifier.spage	2007	en
dc.identifier.epage	2015	en