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Title: Influence of microstructure on rock elastic properties

Abstract

Depending on details of the composite microstructure, different theories may be needed to obtain good agreement with measured elastic properties. This observation is especially pertinent whenever the composite is porous, as is normally true for rocks. Predictions of three theories are compared to data for porous glass samples. The differential effective medium (DEM) theory and Hashin's composite spheres assemblage (H) do a good job of predicting elastic behavior of a porous foam composed of glass. The self-consistent (SC) effective medium theory does equally well at predicting behavior of a sintered glass-bead sample. The realizable microstructure of each theoretical model is a good analog of the microstructure for one or the other of these two very different porous glasses. Velocities of granular rocks such as sandstones may be estimated accurately using the SC theory, whereas velocities of rocks such as basalts having isolated cracks and pores may be better estimated using either the DEM theory of Hashin's model.

Authors:
; ;  [1]
  1. Lawrence Livermore National Lab., CA (United States)
Publication Date:
OSTI Identifier:
5046082
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Journal Article
Journal Name:
Geophysical Research Letters (American Geophysical Union); (United States)
Additional Journal Information:
Journal Volume: 20:23; Journal ID: ISSN 0094-8276
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 58 GEOSCIENCES; ROCKS; ELASTICITY; MICROSTRUCTURE; SIMULATION; MECHANICAL PROPERTIES; TENSILE PROPERTIES; 360603* - Materials- Properties; 580000 - Geosciences

Citation Formats

Berge, P A, Berryman, J G, and Bonner, B P. Influence of microstructure on rock elastic properties. United States: N. p., 1993. Web. doi:10.1029/93GL03131.
Berge, P A, Berryman, J G, & Bonner, B P. Influence of microstructure on rock elastic properties. United States. https://doi.org/10.1029/93GL03131
Berge, P A, Berryman, J G, and Bonner, B P. Tue . "Influence of microstructure on rock elastic properties". United States. https://doi.org/10.1029/93GL03131.
@article{osti_5046082,
title = {Influence of microstructure on rock elastic properties},
author = {Berge, P A and Berryman, J G and Bonner, B P},
abstractNote = {Depending on details of the composite microstructure, different theories may be needed to obtain good agreement with measured elastic properties. This observation is especially pertinent whenever the composite is porous, as is normally true for rocks. Predictions of three theories are compared to data for porous glass samples. The differential effective medium (DEM) theory and Hashin's composite spheres assemblage (H) do a good job of predicting elastic behavior of a porous foam composed of glass. The self-consistent (SC) effective medium theory does equally well at predicting behavior of a sintered glass-bead sample. The realizable microstructure of each theoretical model is a good analog of the microstructure for one or the other of these two very different porous glasses. Velocities of granular rocks such as sandstones may be estimated accurately using the SC theory, whereas velocities of rocks such as basalts having isolated cracks and pores may be better estimated using either the DEM theory of Hashin's model.},
doi = {10.1029/93GL03131},
url = {https://www.osti.gov/biblio/5046082}, journal = {Geophysical Research Letters (American Geophysical Union); (United States)},
issn = {0094-8276},
number = ,
volume = 20:23,
place = {United States},
year = {1993},
month = {12}
}