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Determination of the complex YOUNG'S modulus of polymers at audiofrequencies in a wide temperature range

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A new optical system for the detection of standing and progressive flexural waves on rods is described.

Experimental data of Young's modulus and loss factor obtained with polymethylmethacrylate and pure and plasticized polyvinylchloride are reported. The measuring range extends from 50 to 1000 c/s and from — 8 0 to + 100° C.

In an attempt to measure three dynamic elastic constants of several polymers at medium frequencies in the temperature range covering the main transition, Young's modulus was determined. Although such measurements have frequently been reported, the authors feel that other workers in this field might be interested in the measuring technique and in some of the results.
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Document Type: Research Article

Publication date: January 1, 1962

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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