Innovative Undersea Sensors Using Relaxor Piezoelectric Single Crystals

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$99,875.00
Award Year:
2009
Program:
SBIR
Phase:
Phase I
Contract:
N65538-09-M-0040
Award Id:
92330
Agency Tracking Number:
N083-216-0012
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
7112 Nighthawk Drive, Fort Wayne, IN, 46835
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
134500193
Principal Investigator:
Sara Wagar
Principal Investigator
(260) 402-0353
liwate@hughes.net
Business Contact:
George Lewis
Principal Investigator
(260) 485-3752
lewtechco@verizon.net
Research Institution:
n/a
Abstract
The frequency spectrum of interest for hydrophones used in Naval tactical systems, ocean surveillance systems, or for environmental monitoring is continuing to expand, due to increased interest in passively detecting third-world submarines, merchant shipping, biologics, etc. as well as increased interest in multistatic active sonars. LewTech is proposing that our Phase I and follow-on phases concentrate on adapting the hydrophones used in tactical ASW sensors to use relaxor single-crystal piezoelectric materials rather than the traditionally-used polycrystalline lead-zirconate-titanate (PZT) piezoceramic materials. Hydrophones utilizing relaxor single-crystal ceramics can be designed to increase the sensitivity and bandwidth and reduce the self-noise, due to the improved electromechanical coupling factors, dielectric constant, and the loss tangent. The overall objective is to redesign a current Navy sonobuoy hydrophone, using single-crystal ceramics, and demonstrate improvements in sensitivity, self-noise, and bandwidth capabilities. Phase I will fabricate a prototype hydrophone and perform in-water testing and compare the results to the current hydrophone constructed of piezoelectric ceramic. LewTech has formed a strong team with a major sonobuoy manufacturer, UnderSea Sensor Systems, Inc. (USSI), a wholly-owned company of Ultra Electronics, to support the design and development of a practical, cost effective sensor(s) utilizing relaxor single-crystal ceramics.

* information listed above is at the time of submission.

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