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Proceedings Paper

Strain behavior of magnetostrictive particulate composites
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Paper Abstract

A new theory is presented of the nonlinear magneto-elastic behavior of magnetically dilute magnetostrictive particulate composites. The theory assumes a uniform external magnetic field is operating on a large number of well distributed, crystallographically and shape parallel ellipsoidal magnetostrictive particles encased in an elastic, nonmagnetic composite matrix. The aspect ratio of the particulates may vary between 1 to infinity and the volume fraction of the particulates may vary between zero and one. Example calculations show that the model is able to provide qualitatively correct magnetostriction curves for both homogeneous Terfenol-D rod and experimental Terfenol-D particulate actuated epoxy matrix composites.

Paper Details

Date Published: 12 July 1999
PDF: 9 pages
Proc. SPIE 3675, Smart Structures and Materials 1999: Smart Materials Technologies, (12 July 1999); doi: 10.1117/12.352796
Show Author Affiliations
William D. Armstrong, Univ. of Washington (United States)

Published in SPIE Proceedings Vol. 3675:
Smart Structures and Materials 1999: Smart Materials Technologies
Manfred R. Wuttig, Editor(s)

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