Time lag in mechanical and optical response of polymers

Theocaris, PS

dc.contributor.author	Theocaris, PS	en
dc.date.accessioned	2014-03-01T01:05:31Z
dc.date.available	2014-03-01T01:05:31Z
dc.date.issued	1974	en
dc.identifier.issn	0032-3861	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/8866
dc.subject	Time Lag	en
dc.subject.classification	Polymer Science	en
dc.title	Time lag in mechanical and optical response of polymers	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/0032-3861(74)90056-1	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0032-3861(74)90056-1	en
heal.language	English	en
heal.publicationDate	1974	en
heal.abstract	The time dependent transient values of the stress, strain and dielectric susceptibility tensors were measured in a circular disc made of a rheo-optically simple material and subjected to two equal pairs of diametric loads oriented at right angles. The loading programme was suddenly transferred from a rheologic equilibrium of the four-load situation to a transition state with only one pair of diametric loads. In this way the isotropic point (stress, strain or birefringent), existing at the centre of the disc for the four equal-load configuration, split into a pair of isotropic points moving along a diameter of the disc and tending to its circular boundary. The velocities of isotropic points along the diameter of the disc with time allowed the study of the phase lag between the stress, strain, and optical principal axes. The material chosen for the experiments was a strongly plasticized epoxy polymer. The study extended along the whole viscoelastic spectrum of the material. Important results were revealed for the mechanical and optical viscoelastic behaviour of rheo-optically simple materials. © 1974.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Polymer	en
dc.identifier.doi	10.1016/0032-3861(74)90056-1	en
dc.identifier.isi	ISI:A1974U182400007	en
dc.identifier.volume	15	en
dc.identifier.issue	10	en
dc.identifier.spage	655	en
dc.identifier.epage	660	en