Stoichiometric study of TbxDy(1-x)Fe2 particulate composites for passive damping

Ken K. Ho; Catherine Kerrigan; Omar Luna; Gregory Paul Carman

doi:10.1117/12.607298

5 May 2005 Stoichiometric study of Tb_(x)Dy_(1-x)Fe₂ particulate composites for passive damping

Ken K. Ho, Catherine Kerrigan, Omar Luna, Gregory Paul Carman

Proceedings Volume 5762, Smart Structures and Materials 2005: Industrial and Commercial Applications of Smart Structures Technologies; (2005) https://doi.org/10.1117/12.607298
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2005, San Diego, California, United States

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 (Tb_xDy_1-xFe_1.92) 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.

Citation Download Citation

Ken K. Ho, Catherine Kerrigan, Omar Luna, and Gregory Paul Carman "Stoichiometric study of Tb_(x)Dy_(1-x)Fe₂ particulate composites for passive damping", Proc. SPIE 5762, Smart Structures and Materials 2005: Industrial and Commercial Applications of Smart Structures Technologies, (5 May 2005); https://doi.org/10.1117/12.607298

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