Title: A model for the transverse strain response of unidirectional ceramic matrix composites during tensile testing
Authors: Vanswijgenhoven, Eddy ×
Van der Biest, Omer #
Issue Date: Jul-1998
Publisher: Elsevier Sequoia
Series Title: Materials Science and Engineering A, Structural Materials: Properties, Microstructure and Processing vol:250 issue:2 pages:222-230
Abstract: A comprehensive micromechanical model relating the longitudinal stress and transverse strain of unidirectional fibre toughened ceramic matrix composites (CMCs) is presented. The model uses different cylindrical unit-cells to describe the composite throughout a tensile test and considers all relevant damage mechanisms. The proposed model takes into account the Poisson contraction of fibre and matrix, the relief of thermal residual stresses upon damage development, and the build-up of compressive radial stresses at the interface due to mismatch between fibre and matrix after debonding and sliding. Thus the modelled transverse strain response depends on a wide range of microstructural and micromechanical parameters. The approach is checked by comparing the experimentally observed and simulated response of a unidirectional SIC/CAS composite of which all constituent properties were determined experimentally. The agreement between experiment and theory is excellent. (C) 1998 Elsevier Science S.A. All rights reserved.
ISSN: 0921-5093
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Physical Metallurgy and Materials Engineering Section (-)
× corresponding author
# (joint) last author

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