5 May 2005 Stoichiometric study of Tb(x)Dy(1-x)Fe2 particulate composites for passive damping
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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.
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Ken K. Ho, Ken K. Ho, Catherine Kerrigan, Catherine Kerrigan, Omar Luna, Omar Luna, Gregory Paul Carman, 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); doi: 10.1117/12.607298; https://doi.org/10.1117/12.607298
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