Static and dynamic mechanical and optical behaviour of high polymers

Raftopoulos, DD; Karapanos, D; Theocaris, PS

dc.contributor.author	Raftopoulos, DD	en
dc.contributor.author	Karapanos, D	en
dc.contributor.author	Theocaris, PS	en
dc.date.accessioned	2014-03-01T01:37:49Z
dc.date.available	2014-03-01T01:37:49Z
dc.date.issued	1976	en
dc.identifier.issn	00223727	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21763
dc.subject.other	PHOTOELASTICITY	en
dc.subject.other	POLYMETHYLMETHACRYLATE	en
dc.subject.other	POLYMERS	en
dc.title	Static and dynamic mechanical and optical behaviour of high polymers	en
heal.type	journalArticle	en
heal.identifier.primary	10.1088/0022-3727/9/5/020	en
heal.identifier.secondary	http://dx.doi.org/10.1088/0022-3727/9/5/020	en
heal.identifier.secondary	020	en
heal.publicationDate	1976	en
heal.abstract	The mechanical and optical properties of the well known high polymers used in photoelasticity and photoplasticity, that is polymethylmethacrylate (PMMA) and polycarbonate of bisphenol A (PCBA), under static and dynamic loads with intermediate loading rates (loading rate about 8*108 N m -2 s-1), were determined. The dynamic loads were applied to the specimens by dropping a weight from various heights and were measured by a piezoelectric type of transducer. The mechanical properties of the above-mentioned materials were determined by using strain gauges, while the measurements of the optical properties were made by means of an interferometric technique. It was found that the ratio of the elastic moduli in PMMA under static and dynamical loads was equal to 0.80, while in PCBA this ratio was equal to unity. Poisson's ratio, however, for the aforesaid materials, had the same value under both kinds of loading. Interesting results for the dependence of the stress-optical constants of PMMA and PCBA on the loading time are also given.	en
heal.journalName	Journal of Physics D: Applied Physics	en
dc.identifier.doi	10.1088/0022-3727/9/5/020	en
dc.identifier.volume	9	en
dc.identifier.issue	5	en
dc.identifier.spage	869	en
dc.identifier.epage	877	en