Beschreibung:
<jats:p>Measurements of the compliances parallel and perpendicular to the stretched direction (s11 and s22, respectively) as well as the piezoelectric coefficients g31 and g32 were made for Thorn-EMI voided piezoelectric polyvinylidene fluoride. The measurement method, a simple mass-spring system fed into a dual-channel spectrum analyzer, is described. Although all four measured quantities increased monotonically with increasing temperature, no glass-to-rubber transitions were encountered within the (− 40 to + 30) °C and (200 to 1000) Hz temperature and frequency ranges covered. [Work supported by ONR Code 220B.]</jats:p>