A portable, non-intrusive instrument is currently in use by the U.S. Navy to detect fluid leakage through shipboard steam, water, hydraulic and high-pressure air valves. The Acoustic Valve Leak Detector (AVLD), developed by the David W. Taylor Naval Ship Research and Development Center, listens for the ultrasonic acoustic emissions characteristic of internal valve leakage. The AVLD is being used for troubleshooting, for overhaul planning, and in a systematic preventive maintenance program. Monitoring is accomplished by reading the front panel meter, by listening on earphones, or by recording the output on an X-Y plotter. The instrument, complete with headphones, transducers, transducer clamps and standoffs, fits in a small case and weighs less than seven kilograms.

  • Publication Date: 1978-3

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Filing Info

  • Accession Number: 00178121
  • Record Type: Publication
  • Source Agency: Department of the Navy
  • Files: TRIS
  • Created Date: Jul 19 1978 12:00AM