A progressive damage model for ceramic matrix mini-composites with thick interphases

Nagaraja, AM and Gururaja, S (2023) A progressive damage model for ceramic matrix mini-composites with thick interphases. In: Journal of the European Ceramic Society, 43 (10). pp. 4336-4348.

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Abstract

Toughness enhancement in ceramic matrix composites (CMCs) with brittle matrix and fiber phases is often accomplished by introducing a weak finite-thickness interphase between the fiber and matrix. The current work presents a progressive damage model to predict the tensile response of single tow CMCs (mini-composite) representative of a unidirectional composite at the microscale. Implementation of a 3-phase shear-lag model for a geometrically accurate representation of the underlying microstructure in CMCs with finite thickness interphase has been highlighted. A probabilistic progressive modeling approach has been adopted, accounting for multiple matrix cracking, interfacial debonding, and fiber failure in 3-phase mini-composites. The predicted tensile response of CMCs from the progressive damage modeling approach agrees with experimental results obtained for C/BN/SiC mini-composites validating the approach.

Item Type:	Journal Article
Publication:	Journal of the European Ceramic Society
Publisher:	Elsevier Ltd
Additional Information:	The copyright for this article belongs to Elsevier Ltd.
Keywords:	Ceramic matrix composites; Fiber optic sensors, Ceramic matrix; Ceramic-matrix-composites; Damage modelling; Finite thickness; Interphase; Minicomposites; Modeling approach; Progressive damage; Shear lag; Tensile response, Brittle fracture
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering) Division of Mechanical Sciences > Centre for Product Design & Manufacturing
Date Deposited:	28 May 2023 06:04
Last Modified:	28 May 2023 06:04
URI:	https://eprints.iisc.ac.in/id/eprint/81532

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