Detection of Low-velocity Impact Damage in Composite Plates using Lamb Waves

Author:

Diamanti K.1,Hodgkinson J. M.1,Soutis C.2

Affiliation:

1. Department of Aeronautics, Imperial College London, Prince Consort Road, London SW7 2BY, United Kingdom

2. Aerospace Engineering, The University of Sheffield, Mappin Street, Sheffield S1 3JD, United Kingdom

Abstract

A first approach to a rapid and cost-effective health monitoring system for composite structures is presented. Relatively small piezoceramic patches have been selected for the generation and reception of the fundamental anti-symmetric Lamb mode, A0. The patches were distributed in a linear array in order for larger areas to be inspected. The propagation of Lamb waves was studied using Finite Element analysis and the optimal number and spacing of the transmitters was determined. Impact damage was successfully detected in multidirectional carbon fibre-reinforced plastic (CFRP) laminates using a very simple experimental set-up.

Publisher

SAGE Publications

Subject

Mechanical Engineering,Biophysics

Reference15 articles.

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3. 4. Worlton, D.C. (1957). Ultrasonic testing with lamb waves . NonDestructive Testing, 15(4): 218–222 .

4. 6. Lamb, H. (1917). On waves in an elastic plate . Proc. Royal Soc. London, pp. 114–128 .

5. Optimization of lamb wave inspection techniques

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