Single Crystal Piezoelectric Actuators for Adaptive Structures

Award Information
Agency:
Department of Defense
Branch
Defense Advanced Research Projects Agency
Amount:
$98,972.00
Award Year:
2004
Program:
SBIR
Phase:
Phase I
Contract:
W31P4Q-04-C-R108
Award Id:
68720
Agency Tracking Number:
03SB2-0134
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
2820 East College Avenue, State College, PA, 16801
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
782683007
Principal Investigator:
Paul Rehrig
Director of Research & De
(814) 238-7485
paul@trstechnologies.com
Business Contact:
Wesley Hackenberger
President
(814) 238-7485
wes@trstechnologies.com
Research Institute:
n/a
Abstract
Single crystal piezoelectric actuators are proposed as a means of significantly increasing the stroke of a smart actuator to control the trailing edge flap of a helicopter rotor for vibration control and noise suppression. Conventional piezoelectric ceramic actuators have exhibited inadequate levels of stroke and/or force required to produce an angle of rotation of ¿8¿ at 40 Hz. Single crystals based on (1-x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 (PMN-PT) represent a revolutionary advance in piezoelectric actuator technology. These materials exhibit 5 to 10 times the strain of conventional ceramic piezoelectrics with equivalent deliverable force. Therefore, they offer a much broader design space for adaptive systems than is currently available with ceramic actuators, active fiber composites, electric motors or magnetic devices. The objectives of this project are: 1) to fabricate complete actuators of three leading actuator types using new single crystal piezoceramic material technology. Specifically, a d33 stack, and d32 bender, and a d15 induced shear tube will be addressed, 2) to measure and characterize piezo-coupling coefficients under electromechanical conditions representative of smart rotor and airframe applications, 3) to conduct a performance analysis quantifying the projected gains in actuation capability given the measured single crystal element characteristics.

* information listed above is at the time of submission.

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