Single Crystal PZN/PT as a High-Power Transduction Material
Abstract
The performance of two hypothetical, 20-kHz, 10-inch-diameter projector arrays of PZN/PT and PZT-8 tonpilz-like transducer elements, respectively, is computed. The specific PZN/PT piezoceramic material is monocrystalline. The PZN/PT material coupling factor allows the usable bandwidth to be greatly expanded from 11.7 kHz for PZT-8 to 40.4 kHz for PZN/PT. The source level is also increased, but not as much as the 12.7 dB increase in energy density would suggest because the mechanical quality factor and the volume of the PZN/PT are smaller than those of the PZT-8. Still higher drive levels than the conservative ones of this study may be feasible, however. Biased operation of PZT-8 is also considered as an alternative method for achieving higher power. Although biasing PZT-8 provides no increase in bandwidth, substantial increases (7.4 dB in this example) in source level can be achieved. Suggestions are made for future work with PZN/PT.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 29, 1997
- Accession Number
- ADA637099
Entities
People
- James M. Powers
- Mark B. Moffett
Organizations
- Naval Undersea Warfare Center