Sonar Transducer Reliability Improvement Program FY 80
Abstract
Progress accomplished during the fourth quarter of FY80 in the Sonar Transducer Reliability Improvement Program (STRIP) is reported. Each of the 6 major task areas is discussed in detail. Goals completed this quarter include: Accelerated life testing (ALT) of the TR-316 transducers has shown air bubbles of substantial size may form during operation. At present, the air bubbles have not affected the acoustic performance sufficiently to be out of specification. Resent measurements have shown that safe operating voltage levels in transducers decrease as the operational frequency increases. Strong doubt is also cast on final checkout procedures in which a dc or low-frequency voltage, rather than high voltages at operating frequencies, is applied in a pass/fail test. It was found that the atmosphere in even well sealed transducers, such as the TR-208A, contains sufficient moisture to cause significant changes in the impedance of the transducer. A report on the Composite Unit Accelerated Life Test (CUALT) procedures for the AN/SQS-56 transducer elements has been completed. During FY80, 20 reports have been issued. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1980
- Accession Number
- ADA092651
Entities
People
- R. W. Timme
Organizations
- United States Naval Research Laboratory