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Journal of Sensors
Volume 2014 (2014), Article ID 109403, 10 pages
http://dx.doi.org/10.1155/2014/109403
Research Article

A Hybrid Structural Health Monitoring System for the Detection and Localization of Damage in Composite Structures

1Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 1, P.O. Box 5058, 2600 GB Delft, The Netherlands
2Structures, Materials and Manufacturing, National Research Council Canada (NRC), 1200 Montreal Road, Ottawa, ON, Canada K1A 0R6

Received 11 June 2014; Revised 15 September 2014; Accepted 28 September 2014; Published 29 October 2014

Academic Editor: Yanbiao Liao

Copyright © 2014 Darun Barazanchy et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A hybrid structural health monitoring (SHM) system, consisting of a piezoelectric transducer and fiber optic sensors (FOS) for generating and monitoring Lamb waves, was investigated to determine their potential for damage detection and localization in composite aerospace structures. As part of this study, the proposed hybrid SHM system, together with an in-house developed algorithm, was evaluated to detect and localize two types of damage: a through thickness damage (hole of 2 mm in diameter) and a surface damage (2 mm diameter bore hole with a depth of 0.65 mm) located on the backside of the plate. The experiments were performed using an aircraft representative composite plate skin, manufactured from carbon fiber reinforced polymer (CFRP).