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Composite Terfenol-D Transducers for Underwater Arrays

Award Information

Agency:
Department of Defense
Branch:
Office of the Secretary of Defense
Award ID:
36452
Program Year/Program:
1997 / SBIR
Agency Tracking Number:
36452
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
SATCON APPLIED TECHNOLOGY, INC.
1745A West Nursery Rd MS4018 Li, MD -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1997
Title: Composite Terfenol-D Transducers for Underwater Arrays
Agency / Branch: DOD / OSD
Contract: N/A
Award Amount: $99,997.00
 

Abstract:

Oriented composites of PZT and polymer can have properties superior to ordinary PZT as drivers for sonar transducers and hydrophones because they have a lower Poisson ratio, and a lower dielectric constant. Terfenol-D is superior to ordinary PZT because it has larger maximum strains and higher energy density, and is not subject to fatigue or depoling. For these reasons, composite Terfenol-D should be superior to both composite PZT and ordinary Terfenol-D. This is especially true at high frequencies, since the brittleness of ordinary Terfenol-D makes laminating it expensive and does not allow very thin laminations. SatCon proposes to investigate the hydrostatic magnetostrictie properities of an improved composite Terfenol-D recently developed by Prof. G. Carman's group at UCLA. It is the hydrostatic properties that are relevant for underwater sonar transducers with dimensions that are small compared to a wavelength, as would be true of a small transducer used in an array. In collaboration with the UCLA group, we will develop Terfenol composites that are optimized for sonar and hydrophone use (e.g., reducing the Poisson ration). A small composite Terfenol-D transducer, operating in the 1kHz to 20kHz range, will be designed and built in Phase I, and a full array will be built and demonstrated in Phase II.

Principal Investigator:

Michael J. Gerver, Ph.d.
6173490816

Business Contact:

Small Business Information at Submission:

Satcon Technology Corp.
161 First St Cambridge, MA 01242

EIN/Tax ID:
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No