Failure of amorphous polystyrene
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The failure behaviour of amorphous polystyrene was studied in methanol and ambient air under constant load and strain rate conditions. The good correlation found between fracture mechanics theory and the test results of both crazing and fracture indicates that fracture mechanics theory can be used in predicting failure of amorphous polystyrene. From the fracture mechanics analysis of the results it is inferred that the kinetics associated with craze initiation and crack propagation are similar and that the inherent flaw responsible for failure first initiates the craze in which a crack is then formed. Both the distribution of inherent flaws and the kinetics of crazing and fracture are dependent on the test environment.
KeywordsFracture Strength Inherent Flaw Strain Rate Condition Stress Rupture Test Constant Strain Rate Test
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- 9.A. S. Argon, J. G. Hannoosh andM. M. Salame, “Fracture, 1977,” Vol. 1, Edited by D. M. R. Taplin (University of Waterloo Press, Waterloo, Ontario, Canada, 1977) pp. 445–470.Google Scholar
- 13.Idem, J. Polymer Sci. (A-2) 8 (1970) 1521.Google Scholar
- 16.R. P. Kambour,J. Polymer Sci.: Macromol. Rev. 7 (1973) 1.Google Scholar
- 18.K. Jakus, D. C. Coyne andJ. E. Ritter Jr.,J. Mater. Sci. (to be published).Google Scholar