Transduction with PVF2 in the Ocean Environment.
Abstract
Experimental methods were utilized to establish the piezoelectric properties of PVF2, in the one-dimensional (33-mode) and hydrostatic mode of operation. The coupler reciprocity method has been used for characterizing the PVF2 as a hydrophone and as a transmitter. This method gives the free-field voltage sensitivity and hence g-the piezoelectric voltage coefficient. Through K(supra T) sub 33 the relative dielectric constant, d-the piezoelectric strain coefficient is obtained. Measurements in the one-dimensional configuration were taken at 100 and 1000 Hz in the stress range 0-100 MPa, and at four temperatures: 40, 25, 15, and 3.5C. Measurements in hydrostatic configurations were taken at 1000 Hz and at 25C. Samples prepared from the same sheet of PVF2 exhibit variations in piezoelectric activity, which are presented and discussed. A comparison method has been used to characterize the PVF2 as a dynamic pressure sensor; d was measured as a function of peak one-dimensional stress in the range 0-80 MPa and at four temperatures: 40, 25, 15, and 4.5C. The strain coefficient was also measured as a function of the rise time of the loading pulse at a temperature of 25C. The experimental results are shown and discussed. Comparison with typical ceramics and quartz transducers shows improved behavior of PVF2 over them.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 28, 1980
- Accession Number
- ADA084561
Entities
People
- Yoram Berlinsky
Organizations
- United States Naval Research Laboratory