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Low-Profile, Broadband, Shear-Mode SONAR Transducer for Deep Submergence Applications

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00014-18-C-2008
Agency Tracking Number: N141-066-0881
Amount: $766,260.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: N141-066
Solicitation Number: 2014.1
Solicitation Year: 2014
Award Year: 2018
Award Start Date (Proposal Award Date): 2018-03-05
Award End Date (Contract End Date): 2020-03-05
Small Business Information
56 Margin Street
Cohasset, MA 02025
United States
DUNS: 101163707
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Alexander Butler
 (781) 383-2002
Business Contact
 Victoria Curtis
Phone: (781) 383-2000
Research Institution

The main objective is to design, build and test a low-profile, high-power, low-frequency broadband, d36 shear-mode piezoelectric single crystal transducer capable of operating at submarine depths. Because of Phase I program constraints, we designed an initial modified shear mode transducer with a nylon cylinder head-suspension, that would be used in a d36 design capable of operating at submarine depths. This transducer was FEA modeled, fabricated and tested with PZT-5A d15 shear mode elements of the same size as the legacy single crystal d36 elements. A wide band response from below 2 kHz to over 9 kHz was measured and FEA results showed no significant stress in the single crystal material for a hydrostatic pressure of 1,000 psi. During the proposed Phase II a partial array of improved pressure tolerant d36 shear mode transducers will be developed. To this end, and before the array development, an optimized, improved, pressure-tolerant d36 single crystal version would be FEA modeled, fabricated and tested in-air and in-water under low and high pressures.

* Information listed above is at the time of submission. *

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