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A new photoelastic method for evaluating durability of plastics
Author(s) -
Ohishi Fujio
Publication year - 1970
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1970.070140904
Subject(s) - durability , materials science , composite material , polycarbonate , cracking , degradation (telecommunications) , photodegradation , grinding , deformation (meteorology) , solvent , computer science , chemistry , telecommunications , biochemistry , organic chemistry , photocatalysis , catalysis
This work was undertaken to measure quantitatively the quality change and crack development caused by degradation of plastics with the new photoelastic scale (P scale) using split circular ring‐type specimens (C specimen). For an example, a polycarbonate specimen was used under various conditions—photodegradation, thermal degradation, solvent cracking, solvent action, and alkaline degradation. The results indicate that this method is useful for evaluating durability of plastics, and a merit of the method is to provide quick, convenient, nondestructive means of measurement with simple equipment. Besides, this C specimen is easily deflected by a spring plate with two holes. Therefore this method is also applicable to the investigation of effects of deformation on various degradations of plastics.