Effect of matrix cracking and material uncertainty on composite plates

Gayathri, P and Umesh, K and Ganguli, Ranjan (2010) Effect of matrix cracking and material uncertainty on composite plates. In: Reliability Engineering & System Safety, 95 (7). pp. 716-728.

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Abstract

A laminated composite plate model based on first order shear deformation theory is implemented using the finite element method.Matrix cracks are introduced into the finite element model by considering changes in the A, B and D matrices of composites. The effects of different boundary conditions, laminate types and ply angles on the behavior of composite plates with matrix cracks are studied.Finally, the effect of material property uncertainty, which is important for composite material on the composite plate, is investigated using Monte Carlo simulations. Probabilistic estimates of damage detection reliability in composite plates are made for static and dynamic measurements. It is found that the effect of uncertainty must be considered for accurate damage detection in composite structures. The estimates of variance obtained for observable system properties due to uncertainty can be used for developing more robust damage detection algorithms. (C) 2010 Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Publication:	Reliability Engineering & System Safety
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Keywords:	Laminated composite plate;FSDT model;Matrix cracking;Material uncertainties;Monte Carlo techniques
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	25 Jun 2010 05:53
Last Modified:	19 Sep 2010 06:09
URI:	http://eprints.iisc.ac.in/id/eprint/28543

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