Terfenol-D tunable mechanical resonator

Rick A. Kellogg; Alison B. Flatau

doi:10.1117/12.436584

16 August 2001 Terfenol-D tunable mechanical resonator

Rick A. Kellogg, Alison B. Flatau

Proceedings Volume 4327, Smart Structures and Materials 2001: Smart Structures and Integrated Systems; (2001) https://doi.org/10.1117/12.436584
Event: SPIE's 8th Annual International Symposium on Smart Structures and Materials, 2001, Newport Beach, CA, United States

Abstract

The control of Terfenol-D's operational elastic modulus offers opportunities for novel devices and applications capitalizing on real time changes in material stiffness. This work describes the development and testing of a Terfenol-D transducer employed as a wide-band variable frequency mechanical resonator. The design and construction of such a wide-band mechanical resonator for testing under controlled thermal, magnetic and dynamic mechanical load conditions are described. Changes in Terfenol-D's elastic modulus, the (Delta) E effect, approaching 266% are demonstrated in the mechanical resonator utilizing a range of d.c. applied magnetic field levels of less than 61.0 kA/m. The elastic modulus and damping characteristics of Terfenol-D critical to the successful design of devices employing the (Delta) E effect are examined. This conference paper is a shortened version of the paper titled Wide band tunable mechanical resonator employing the (Delta) E effect of Terfenol-D that has been submitted for peer reviewed journal publication.

Citation Download Citation

Rick A. Kellogg and Alison B. Flatau "Terfenol-D tunable mechanical resonator", Proc. SPIE 4327, Smart Structures and Materials 2001: Smart Structures and Integrated Systems, (16 August 2001); https://doi.org/10.1117/12.436584

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