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

K. Diamanti

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

J. M. Hodgkinson

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

C. Soutis

Aerospace Engineering, The University of Sheffield, Mappin Street, Sheffield S1 3JD, United Kingdom c.soutis{at}sheffield.ac.uk

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, A 0. 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.

Key Words: non-destructive evaluation • Lamb wave • piezoceramic transducer • composites • low-velocity impact • delamination

Structural Health Monitoring, Vol. 3, No. 1, 33-41 (2004)
DOI: 10.1177/1475921704041869
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Home page
 Journal of Intelligent Material Systems and StructuresHome page
T. Monnier
Lamb Waves-based Impact Damage Monitoring of a Stiffened Aircraft Panel using Piezoelectric Transducers
Journal of Intelligent Material Systems and Structures, May 1, 2006; 17(5): 411 - 421.
[Abstract] [PDF]