Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1992-12-04
1994-08-02
Dougherty, Thomas M.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310800, H01L 41187, H04R 1700
Patent
active
053349032
ABSTRACT:
A piezoelectric composite which can be used as a transducer is constructed of parallel piezoelectric ceramic rods set in a passive polymer matrix which has a negative Poisson ratio whereby the electromechanical coupling of the transducer is greatly increased.
REFERENCES:
patent: 4412148 (1983-10-01), Klicker et al.
patent: 4422003 (1983-12-01), Safari et al.
patent: 4613784 (1986-09-01), Haun et al.
patent: 4683396 (1987-07-01), Takeuchi et al.
patent: 4728845 (1988-03-01), Haun et al.
patent: 4755707 (1988-07-01), Nakaya et al.
patent: 4933230 (1990-06-01), Card et al.
patent: 4963782 (1990-10-01), Bui et al.
patent: 5164920 (1992-11-01), Bast et al.
"Transverse Honeycomb Composite Transducers" by A. Safari et al. Nov. 13, 82 Penn. State Univ.
T. R. Gururaja, et al. "Piezoelectric Ceramic-Polymer Composites For Transducer Applications" Electric Ceramics, pp. 92-128, 1987.
K. E. Evans, "Tensile Network Microstructures Exhibiting Negative Poisson's Ratio," J. Phys. D:Appl. Phys. 22, 1989.
Ken Evans, "Tailoring the Negative Poisson Ratio", Chemistry & Industry, Oct. 1990.
Wallace A. Smith, The Role of Piezocomposites in Ultrasonic Transducers, Proceedings of IEEE, 1989.
Busch James T.
Dougherty Thomas M.
McCarthy William F.
McDonald Thomas E.
The United States of America as represented by the Secretary of
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