Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Microstructure, Properties, and Modeling: Elastic and Related Properties of Two-Phase Materials



H M. Ledbetter, Martin Dunn


We review some of our recent studies on elastic constants, internal friction, and related properties of two-phase materials. The occluded-phase geometry includes particles, short fibers, long fibers, and laminae. We review our measurement methods, which range in frequency from near-static to magahertz. Briefly, we review our theoreticl models, which include Mori-Tanaka effective-field, Datta-Ledbetter scattered-plane-wave ensemble-average, and Dunn-Ledbetter mechanical-concentration-factor extended Hori-Nemat-Nasser. Example materials include ceramic, metal, and polymer matrices. We show results for five composites: A12O3/ZrO2 particle mixtures, voids in sintered titanium, graphite fibers in a magnesium matrix, short SiC fibers in an aluminum matrix, a laminate comprising aramid-fiber-epoxy and aluminum layers.
Conference Dates
September 9-11, 1996
Conference Location
Tokyo, JA
Conference Title
Microstructures and Functions of Materials


composites, elastic constants, stress-strain, thermal expansion


Ledbetter, H. and Dunn, M. (1996), Microstructure, Properties, and Modeling: Elastic and Related Properties of Two-Phase Materials, Microstructures and Functions of Materials, Tokyo, JA (Accessed July 20, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created September 1, 1996, Updated February 17, 2017