Acoustic emission and e.s.r. studies of polymers under stress

A nearly noise-free apparatus for the stressing of polymers is described. It has been used, in conjunction with a sensitive piezo-electric transducer and associated apparatus for the generation, detection and collection of acoustic emissions, from stressed polymers. It is shown that detectable level...

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Bibliographic Details
Published in:Polymer (Guilford) 1982-02, Vol.23 (2), p.178-184
Main Authors: Betteridge, D., Cridland, J.V., Lilley, T., Shoko, N.R., Cudby, M.E.A., Wood, D.G.M.
Format: Article
Language:English
Subjects:
acoustic emission
electron spin resonance
free radical
Polymers
spectrometry
stress
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Summary:A nearly noise-free apparatus for the stressing of polymers is described. It has been used, in conjunction with a sensitive piezo-electric transducer and associated apparatus for the generation, detection and collection of acoustic emissions, from stressed polymers. It is shown that detectable levels of acoustic energy are released from several polymers and composites, and that the distribution of acoustic events varies with material examined. Parallel experiments have been carried out in which free radicals are generated by stressing bulk polymer in the cavity of an e.s.r. spectrometer. There is some correlation between stress and both acoustic emissions and free radical generation.
ISSN:0032-3861
1873-2291
DOI:10.1016/0032-3861(82)90297-X