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PVDF piezoelectric voltage coefficient in situ measurements as a function of applied stress
Author(s) -
Gusarov Boris,
Gusarova Elena,
Viala Bernard,
Gimeno Leticia,
Cugat Orphée
Publication year - 2016
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.43248
Subject(s) - materials science , piezoelectricity , piezoelectric coefficient , polyvinylidene fluoride , composite material , stress (linguistics) , anisotropy , voltage , voltmeter , analytical chemistry (journal) , optics , polymer , chemistry , electrical engineering , physics , chromatography , linguistics , philosophy , engineering
Direct piezoelectric g 31 voltage coefficient was measured in situ as a function of applied tensile stress for films of polyvinylidene fluoride (PVDF). Measurements were performed under quasi‐static conditions with applied strain rates of 0.5–1.5 mm/min for strains up to 12%. Open‐circuit voltage was measured with a contact‐less electrostatic voltmeter. Obtained results show a strong dependence of the g 31 coefficient of mono‐oriented PVDF films on the applied stress, with a maximum value of the coefficient in the transition region between elastic and plastic deformation zones. The effect of sample geometry on the apparent g 31 coefficient is shown and discussed. The anisotropy of the piezoelectric effect is studied by means of g 31 and g 32 measurements. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43248.