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Proceedings Paper

Stoichiometric study of Tb(x)Dy(1-x)Fe2 particulate composites for passive damping
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Paper Abstract

Magnetostrictive particulate composites promises to be a revolutionary new damping solution with possible loss factors similar to current viscoelastic systems but coupled with a significantly higher modulus ~ 10GPa. Magnetostrictive particulate composites fabricated from Terfenol-D (TbxDy1-xFe1.92) particles and epoxy resin, were mechanically tested under cyclic compressive loads in an MTS load frame to determine hysteric losses, from which an approximate tanδ was derived to quantify damping performance. DMA results on the same composites corroborated the MTS results. Various off-stoichiometric compositions of Terfenol-D were studied with varying Tb composition of x = 0.35, 0.4, 0.45, 0.5, 0.75 and 1.0. Results indicated better damping with higher Tb compositions peaking at Tb=0.5.

Paper Details

Date Published: 5 May 2005
PDF: 7 pages
Proc. SPIE 5762, Smart Structures and Materials 2005: Industrial and Commercial Applications of Smart Structures Technologies, (5 May 2005); doi: 10.1117/12.607298
Show Author Affiliations
Ken K. Ho, Fortis Technologies (United States)
Catherine Kerrigan, Univ. of California/Los Angeles (United States)
Omar Luna, Fortis Technologies (United States)
Gregory Paul Carman, Univ. of California/Los Angeles (United States)


Published in SPIE Proceedings Vol. 5762:
Smart Structures and Materials 2005: Industrial and Commercial Applications of Smart Structures Technologies
Edward V. White, Editor(s)

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