The time dependence of the Poisson's ratio μ for low-pressure polyethylene has been studied by a method involving superposition of time and temperature (in the short-time range) and by recording creep curves for the longitudinal and transverse strains (under prolonged loading). It is shown that μ is not constant, its value changing from approx. 1/3 for short loading times to approx. 1/2 under prolonged loading conditions.
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Shamov, I.V. Long-time study of Poisson's ratio for polyethylene stressed in the small strains range. Polymer Mechanics 1, 36–38 (1965). https://doi.org/10.1007/BF00858800
- Time Dependence
- Loading Condition
- Small Strain
- Strain Range