ISSN:
0021-8995
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Measurements of birefringence during stress-relaxation and recovery have been recorded for examples of an epoxy resin cured at three different temperatures. Birefringence remained constant during stress-relaxation even after prolonged testing during which the stress fell considerably. The stress sensitivity was found to be the same on both loading and unloading so that, immediately after unloading, the birefringence was different to that prior to the stress-relaxation test. This residual change began to decay after a prolonged period free from applied stress. No significant differences were noted in the birefringence measurements made on samples cured at different temperatures, but, when the stress-relaxation data were analyzed by the procedure of Kubát and Rigdahl, marked differences appeared.
Additional Material:
8 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/app.1984.070290419
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