Response of Quasi-Brittle Materials Reinforced by Short, Aligned Fibers
Publication: Journal of Engineering Mechanics
Volume 125, Issue 11
Abstract
Pseudo-strain-hardening behavior of quasi-brittle materials reinforced by discontinuous, aligned fibers subjected to uniaxial tension is studied in this paper. An R-curve was used to describe transverse cracking of fiber-reinforced composites. The equivalent inclusion method and Mori-Tanaka theory were used to derive the strain energy release rate of the composites. The proposed model takes into account the influence of fiber distribution. When properties of fiber and matrix are known, the proposed model is capable of predicting whether or not a composite will fail with a single crack or multiple cracks. If a composite fails due to multiple cracks, the model can further predict its pseudo-strain-hardening behavior after the formation of the first transverse crack. The theoretical calculation reasonably matched the experimental results.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 125 • Issue 11 • November 1999
Pages: 1268 - 1275
History
Received: Oct 29, 1997
Published online: Nov 1, 1999
Published in print: Nov 1999
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