Abstract
The Underwater Sound Reference Division (USRD), Naval Sea Systems Division in Newport, RI, is the U.S. Navy’s primary source for the provision of standard underwater electro‐acoustic reference transducers. USRD has over 40 years of traceable and repeatable historic data for each transducer that is currently available for underwater calibrations and experiments. As such, USRD’s primary focus is on the continuous development of new reference transducers incorporating the latest technologies available. Requirements for these standards include repeatability over extended time, traceability, and ease of maintenance. This presentation covers an on‐going USRD investigation to feature single crystal PMN‐PT as the active substrate in the current F41 program transducer. In addition, lossy rubber substrates are being examined to replace the legacy corprene passive materials in order to extend the operating depths of the transducer. Our presentation will begin with an overview of the fabrication techniques followed by experimental underwater data comparing the new active and passive materials with the traditional F41.
Published Version
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