This work presents a set of material coefficients for a uniaxially 4x stretched 25 μm thick PVDF film. Calculations of the type d = se, where d and e are piezoelectric coefficients and s is the compliance, are used to compare independent measurements of piezoelectric coefficients. The piezoelectric coefficient e333 is found to be constant to strains over 25%. The non-linearities in the dijk coefficients are due to non-linearities in the elastic moduli that are typical of polymers above their glass transition temperature, i.e. strain rate dependent, viscoelastic, temperature dependent.
Ferroelectrics
Volume 150, 1993 - Issue 1
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Related Research Data
PVDF piezoelectric voltage coefficient in situ measurements as a function of applied stress
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Wiley
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