Hybrid composite materials using shape memory alloy actuators to provide vibration and acoustic control

Lawrence McDonald Schetky; Chen Liang; Craig A. Rogers

doi:10.1117/12.175203

6 May 1994 Hybrid composite materials using shape memory alloy actuators to provide vibration and acoustic control

Lawrence McDonald Schetky, Chen Liang, Craig A. Rogers

Proceedings Volume 2190, Smart Structures and Materials 1994: Smart Structures and Intelligent Systems; (1994) https://doi.org/10.1117/12.175203
Event: 1994 North American Conference on Smart Structures and Materials, 1994, Orlando, FL, United States

Abstract

Shape memory alloys exhibit several characteristics which make these materials particularly attractive for modal modification of structures: a large change in modulus upon heating through the phase transformation temperature, an exceptionally high specific damping capacity, and an ability to generate large forces through the shape recovery mechanism. Used as either embedded members in a composite structure, or as an external actuator when caused to undergo the shape transformation by heating, these actuators can provide a significant change in acoustic response of the structure. The paper describes shape memory alloy characterization and the design of an actuator system for modifying the acoustic response of a clamped plate.

Citation Download Citation

Lawrence McDonald Schetky, Chen Liang, and Craig A. Rogers "Hybrid composite materials using shape memory alloy actuators to provide vibration and acoustic control", Proc. SPIE 2190, Smart Structures and Materials 1994: Smart Structures and Intelligent Systems, (6 May 1994); https://doi.org/10.1117/12.175203

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