Sonar Transducer Reliability Improvement Program (STRIP) FY81.
Abstract
Four coating materials have shown the ability to increase the electrical lifetime of PZT ceramic. A strong recommendation was made that Humiseal 2A53 be used for an insulating coating material on the PZT ceramic in the AN/SQS-56 transducer instead of the Conap EN-2 used previously. Long-term water permeation experiments give initial indications that sodium chloride is not carried through the transducer elastomer. The composition of the elastomer is not significantly affected. DI water does not reach a steady state equilibrium permeation rate. However, it has been shown that drastic electronic changes in transducers caused by high temperature, humid aging can be nearly completely nullified by a thorough drying. An improved transducer has been developed and demonstrated as superior to the TR-122 (BQC-1). All performance specifications, before and after explosive shock, have been met. Recommendations are made for improving the reliability and performance of the DT-276 hydrophone. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1981
- Accession Number
- ADA108285
Entities
People
- R. W. Timme
Organizations
- United States Naval Research Laboratory