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Rate process analysis applied to the mechanical behavior of glassy bisphenol‐A‐polycarbonate
Author(s) -
Mattioli Theresa K.,
Quesnel David J.
Publication year - 1987
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760271113
Subject(s) - polycarbonate , materials science , composite material , bisphenol a , deformation (meteorology) , strain rate , monotonic function , epoxy , mathematics , mathematical analysis
The mechanical behavior of bisphenol‐A‐polycarbonate has been studied. The principle mode of deformation studied was fatigue with monotonic tests and stress relaxation tests also performed. Testing was conducted at different strain rates and polycarbonate was found to be a rate sensitive material. In addition, it was found that polycarbonate's data show a good fit to the rate process theory of deformation first proposed by Eyring, whereby molecules move over a potential barrier in an activated process. A hard ball model is presented as a first approximation to this activated process of deformation. Finally, a potential mechanism of deformation during fatigue loading is discussed.