Degradation of Terfenol-D particle epoxy composites under low frequency cyclic magneto-mechanical loading at the matrix glass transition start and finish temperatures

William D. Armstrong; Manikantan Shanmugham; Harold Bailey

doi:10.1117/12.538931

21 July 2004 Degradation of Terfenol-D particle epoxy composites under low-frequency cyclic magneto-mechanical loading at the matrix glass transition start and finish temperatures

William D. Armstrong, Manikantan Shanmugham, Harold Bailey

Author Affiliations +

Proceedings Volume 5387, Smart Structures and Materials 2004: Active Materials: Behavior and Mechanics; (2004) https://doi.org/10.1117/12.538931
Event: Smart Structures and Materials, 2004, San Diego, CA, United States

Abstract

The present paper presents cyclic strain amplitude and longitudinal strain measurements of longitudinally compressed Terfenol-D particle samples subjected to magneto-strain cycling. A comparison is made of the responses of material strain cycle tested at temperatures near the matrix glass transition start temperature, and material strain cycle tested at a temperature near the matrix glass transition finish temperature. The cyclic strain amplitude of the material was significantly larger when tested at a temperature near the matrix glass transition finish temperature. A useful range of longitudinal applied stress exists where the composite suffers little apparent degradation. Beyond this range the composite exhibits steadily decreasing cyclic strain amplitude with increases in longitudinal compressive stress magnitude.

Citation Download Citation

William D. Armstrong, Manikantan Shanmugham, and Harold Bailey "Degradation of Terfenol-D particle epoxy composites under low-frequency cyclic magneto-mechanical loading at the matrix glass transition start and finish temperatures", Proc. SPIE 5387, Smart Structures and Materials 2004: Active Materials: Behavior and Mechanics, (21 July 2004); https://doi.org/10.1117/12.538931

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