COMPARISON OF EXPERIMENTAL TECHNIQUES IN THE MEASUREMENT OF DAMPING CAPACITY OF METAL-MATRIX COMPOSITES.
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The damping capacity of materials is an important parameter in characterizing the dynamic response of structures. Energy dissipation occurs in materials due to microstructural mechanisms such as dislocations, grain boundary sliding, and friction at the fiber-matrix interface. However, structural damping incorporates both material damping and energy dissipation due to macroscopic mechanisms such as joint friction. This paper discusses two experimental techniques for determining a measure of damping, namely uniaxial tension-tension fatigue and free-free flexural resonance, and demonstrates that each of these methods measures a different type of damping, namely material and structural damping respectively.
author list (cited authors)
Ray, A. K., Wren, G. G., & Kinra, V. K.