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Elastic Properties of Particle-Occlusion Composites: Measurements and Modeling

Published

Author(s)

H M. Ledbetter, S K. Datta, Martin Dunn

Abstract

We review some of our recent studies on the effective elastic constants of composites where the occluded phase is spherical or spheroidal (oblate or prolate). From constituent properties and phase geometry, we estimated the composites effective macroscopic elastic constants using two models; the Ledbetter-Datta scattered-plane-wave ensemble-average model and the Mori-Tanaka effective-field model. We measured elastic constants by three principal methods: resonance, pulse-echo, and acoustic-resonance spectroscopy. We show microstructures, measurements, and model calculations for five representative composites: SiC/Al, Al2O3-mulliter/Al, Qal2O3p/mullite, graphitep/ferrite (cast iron), voids/Ti.
Citation
Journal of Engineering Materials and Technology

Keywords

composites, continuum mechanics, elastic constants, microstructure

Citation

Ledbetter, H. , Datta, S. and Dunn, M. (1995), Elastic Properties of Particle-Occlusion Composites: Measurements and Modeling, Journal of Engineering Materials and Technology (Accessed April 21, 2024)
Created October 1, 1995, Updated February 17, 2017