Journal article
Damping and Stiffness of Particulate Sic–Insn Composite
Journal of composite materials, Vol.36(19), pp.2245-2254
10/2002
DOI: 10.1177/0021998302036019291
Abstract
Metal matrix composites of silicon carbide particles in indium–tin alloy were fabricated with the aim of achieving a high value of the product of stiffness and viscoelastic damping tan, without excess density. Stiffness and viscoelastic damping were measured over a wide range of frequency. For monodisperse 40% by volume SiC, and for hierarchical 60% by volume SiC the composite damping increased compared with the matrix at frequencies above 100 Hz. Composite shear modulus was almost a factor two greater than matrix for 40% and a factor of four greater than that of matrix for 60%. The product of stiffness and damping exceedsthat of well-known materials including polymer damping layers. Hashin–Shtrikman analysis modelled the observed stiffness increase. The damping increase at higher frequency cannot be accounted for by a purely mechanical composite model; it is attributed to thermoelastic coupling and an increase in matrix dislocations during fabrication.
Details
- Title: Subtitle
- Damping and Stiffness of Particulate Sic–Insn Composite
- Creators
- M. N Ludwigson - University of Wisconsin–MadisonR. S Lakes - University of Wisconsin–MadisonC. C Swan - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Journal of composite materials, Vol.36(19), pp.2245-2254
- DOI
- 10.1177/0021998302036019291
- ISSN
- 0021-9983
- eISSN
- 1530-793X
- Language
- English
- Date published
- 10/2002
- Academic Unit
- Civil and Environmental Engineering
- Record Identifier
- 9984197527802771
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