Sonar Transducer Reliability Improvement Program (STRIP) FY 81.
Abstract
During the third quarter of FY81, efforts in the various tasks of STRIP have resulted in progress toward the program goals as summarized below: The voltage at which corona forms about electrodes and hook-up wires in a transducer configuration has been quantified in the laboratory and verified in an actual transducer design. An investigation of the effects of using unshielded electrical cable exterior to the submarine hull on the performance and reliability of hydrophones has been initiated. The DT-605 hydrophones undergoing accelerated life testing have begun to show deterioration of performance after four-years equivalent. A new phenomenon of increased water permeation through Neoprene-G after 100 days was verified. Furthermore, a second change (increase) in rate was observed at 191 days. A parameter variation study on a computer model of a 33-mode stacked ceramic resonator explains the resonance shifting previously observed on the TR-316 transducers. Initial results from an infrared temperature measurement system for obtaining the surface temperature profiles of acoustic resonators under drive are presented. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1981
- Accession Number
- ADA103163
Entities
People
- R. W. Timme
Organizations
- United States Naval Research Laboratory