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Journal of Dental Research
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Determination of Visco-elastic Properties of Dental Polymers by Mechanical Impedance Measurements

R.L. Clarke

Dental School of The London Hospital Medical College, University of London, London E1 2AD, England

M. Braden

Dental School of The London Hospital Medical College, University of London, London E1 2AD, England

A mechanical impedance method has been used to determine visco-elastic properties, namely, Young's Modulus (E) and the mechanical loss tangent (Tan {delta}), at a nominal temperature of 23° C and over the frequency range 0.02 - 20 k Hz. This method involves longitudinal wave propagation in a rod of material, and measuring resonant frequencies and half-band widths. Both glassy and elastomeric polymers have been studied, and data have been compared with low frequency and static data.

Journal of Dental Research, Vol. 61, No. 11, 1245-1249 (1982)
DOI: 10.1177/00220345820610110801
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