Elastic-Plastic Poisson's Ratio of Borsic-Aluminum-Reference-Cited by-同舟云学术

Elastic-Plastic Poisson's Ratio of Borsic-Aluminum

Published:1974-01 Issue:1 Volume:8 Page:15-28
ISSN:0021-9983
Container-title:Journal of Composite Materials
language:en
Short-container-title:Journal of Composite Materials

Author:

Allred R.E.¹,Hoover W.R.¹,Horak J.A.²

Affiliation:

1. Composite Materials Development Division Sandia Laboratories Albuquerque, New Mexico 87115

2. Department of Nuclear Engineering University of New Mexico Albuquerque, New Mexico 87106

Abstract

Poisson's ratio as a function of tensile strain has been examined for four volume fractions of unidirectional Borsic-reinforced aluminum composites. Linear relationships were found between Poisson's ratio and filament volume fraction during Stage I (elastic filaments-elastic matrix) and Stage II (elastic filaments-plastic matrix) deformation which could be correlated to filament and matrix values of Poisson's ratio. These results confirm that a simple rule-of-mixtures relationship may be used to predict composite Poisson's ratios as a function of filament volume fraction. The marked increase in the Poisson's ratio of the matrix upon yielding causes an abrupt rise in the slope of the composite Poisson's ratio versus longitudinal strain curve. This sudden increase may be used as an accurate method of determining matrix yield in filament-reinforced, metal-matrix composites.

Publisher

SAGE Publications

Subject

Materials Chemistry,Mechanical Engineering,Mechanics of Materials,Ceramics and Composites

Link

http://journals.sagepub.com/doi/pdf/10.1177/002199837400800102

Reference26 articles.

1. V.A. Kuz'memko, "Regularities in the Variation of Transverse Strain Coefficients," Institute of Strength Problems at the Academy of Sciences of the Ukranian SSR, Kieve, translated from Problemy Prochnosti, No. 8 ( 1971), p. 48.

2. Compliance tensor for an elastic material reinforced in one direction

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