Sonar Transducer Reliability Improvement Program (STRIP).
Quarterly progress rept. no. 2, FY 1981,
NAVAL RESEARCH LAB WASHINGTON DC
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Efforts in the various tasks of STRIP have resulted in progress in the following program goals 1 The quantization of the failure mode of electrical breakdown between the two electrodes on a ceramic surface in a transducer has been completed. Formulae are given for calculation of the reliability and operational lifetime which can be applied to any transducer design 2 The investigation of the mechanical strength of shielded and unshielded cables and the effectiveness of clamps on connector-boot bonds has been completed 3 The hardness of the neoprene acoustic windows on the TR-316 projectors increased predominantly after the 71 C dry heat and UV exposure. The largest increases are in the wide-beam sections, reaching a durometer value of Shore A75 from a pre-CUALT value of Shore A55 in two-years equivalent of CUALT on projector A3 and 4 The investigation of loss mechanisms in cement joints of K33 ceramic stacks indicates solid metal electrodes are superior to expanded metal electrodes.
- Manufacturing and Industrial Engineering and Control of Production Systems
- Acoustic Detection and Detectors