Crystal Tensile Properties for High Power, 1-3 Composite Projector Design Navy SBIR FY2008.1 Sol No.: Navy SBIR FY2008.1 Topic No.: N08-061 Topic Title: Crystal Tensile Properties for High Power, 1-3 Composite Projector Design Proposal No.: N081-061-1189 Firm: TRS Ceramics, Inc. 2820 East College Avenue State College, Pennsylvania 16801 Contact: Kevin Snook Phone: (814) 238-7485 Web Site: www.trstechnologies.com Abstract: In this Phase I SBIR program TRS Technologies will develop high power, high frequency 1-3 composite transducers for high resolution imaging at ranges sufficient for naval applications such as mine classification. In order to understand and model the performance of 1-3 composite projectors, we will measure the electromechanical properties of crystals subjected to tensile stress. We will also initiate characterization of the full dielectric, piezoelectric, and elastic property matrices of thermally stable ternary crystals. In Phase II this effort will be extended to high field, high stress electromechanical properties and thermal properties. In collaboration with Penn State Applied Research Laboratory, we will also begin development of new modeling techniques that will incorporate nonlinear effects with field, stress, and temperature. At the conclusion of the Phase I program, TRS and our team will have demonstrated the feasibility of using crystal 1-3 composites for high power, high frequency projector applications. This will serve as the basis for developing full scale transmit/receive arrays for side scan imaging systems in Phase II. Benefits: Single crystal 1-3 composite projectors and transmit/receive arrays can be used to enhance the performance of side scan imaging sonar through increased lateral resolution due to practical high frequency operation, increased axial resolution due to high bandwidth, and increased range due to high piezoelectric properties and high tensile strength. Applications that can benefit from this technology include side scan imaging from towed bodies, navigation (DVL) and marine properties (ADCP) sonar, UUV and towed minehunters, torpedo homing sonar, bathymetric sonar, and submarine and ship high frequency obstacle avoidance. Return