Fractal dimension method for delamination detection in composite beams

Rao, KKS and Ganguli, R and Harursampath, D (2012) Fractal dimension method for delamination detection in composite beams. In: 1st Asian/ Australian Rotorcraft Forum (ARF), Feb 12-15, 2012, BEXCO, Busan, South Korea.

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Abstract

A new delaminated composite beam element is formulated for Timoshenko as well as Euler-Bernoulli beam models. Shape functions are derived from Timoshenko functions; this provides a unified formulation for slender to moderately deep beam analyses. The element is simple and easy to implement, results are on par with those from free mode delamination models. Katz fractal dimension method is applied on the mode shapes obtained from finite element models, to detect the delamination in the beam. The effect of finite element size on fractal dimension method of delamination detection is quantified.

Item Type:	Conference Paper
Publisher:	AHS International
Additional Information:	Copyright of this article belongs to AHS International.
Keywords:	Composite beam;Delamination;Fractal dimensions;Euler Bernoulli beam theory;Timoshenko beam theory;Finite element model;Mode shape.
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	13 Feb 2014 07:42
Last Modified:	13 Feb 2014 12:22
URI:	http://eprints.iisc.ac.in/id/eprint/48404

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