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Damage detection in composite materials using lamb wave methods

Damage detection in composite materials using lamb wave methods
Damage detection in composite materials using lamb wave methods
Cost-effective and reliable damage detection is critical for the utilization of composite materials. This paper presents part of an experimental and analytical survey of candidate methods for in situ damage detection of composite materials. Experimental results are presented for the application of Lamb wave techniques to quasi-isotropic graphite/epoxy test specimens containing representative damage modes, including delamination, transverse ply cracks and through-holes. Linear wave scans were performed on narrow laminated specimens and sandwich beams with various cores by monitoring the transmitted waves with piezoceramic sensors. Optimal actuator and sensor configurations were devised through experimentation, and various types of driving signal were explored. These experiments provided a procedure capable of easily and accurately determining the time of flight of a Lamb wave pulse between an actuator and sensor. Lamb wave techniques provide more information about damage presence and severity than previously tested methods (frequency response techniques), and provide the possibility of determining damage location due to their local response nature. These methods may prove suitable for structural health monitoring applications since they travel long distances and can be applied with conformable piezoelectric actuators and sensors that require little power.
269-278
Kessler, Seth S.
20a4d107-0f18-4c32-a684-18d83ce9570f
Spearing, S. Mark
9e56a7b3-e0e8-47b1-a6b4-db676ed3c17a
Soutis, Constantinos
9e86a245-6773-4977-881e-74940e860808
Kessler, Seth S.
20a4d107-0f18-4c32-a684-18d83ce9570f
Spearing, S. Mark
9e56a7b3-e0e8-47b1-a6b4-db676ed3c17a
Soutis, Constantinos
9e86a245-6773-4977-881e-74940e860808

Kessler, Seth S., Spearing, S. Mark and Soutis, Constantinos (2002) Damage detection in composite materials using lamb wave methods. Smart Materials and Structures, 11 (2), 269-278. (doi:10.1088/0964-1726/11/2/310).

Record type: Article

Abstract

Cost-effective and reliable damage detection is critical for the utilization of composite materials. This paper presents part of an experimental and analytical survey of candidate methods for in situ damage detection of composite materials. Experimental results are presented for the application of Lamb wave techniques to quasi-isotropic graphite/epoxy test specimens containing representative damage modes, including delamination, transverse ply cracks and through-holes. Linear wave scans were performed on narrow laminated specimens and sandwich beams with various cores by monitoring the transmitted waves with piezoceramic sensors. Optimal actuator and sensor configurations were devised through experimentation, and various types of driving signal were explored. These experiments provided a procedure capable of easily and accurately determining the time of flight of a Lamb wave pulse between an actuator and sensor. Lamb wave techniques provide more information about damage presence and severity than previously tested methods (frequency response techniques), and provide the possibility of determining damage location due to their local response nature. These methods may prove suitable for structural health monitoring applications since they travel long distances and can be applied with conformable piezoelectric actuators and sensors that require little power.

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More information

Submitted date: 6 August 2001
Published date: 2002

Identifiers

Local EPrints ID: 23075
URI: http://eprints.soton.ac.uk/id/eprint/23075
PURE UUID: 7c5a9f3e-eeab-4a93-8614-9bb678f0082c
ORCID for S. Mark Spearing: ORCID iD orcid.org/0000-0002-3059-2014

Catalogue record

Date deposited: 10 Mar 2006
Last modified: 17 Dec 2019 01:48

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Contributors

Author: Seth S. Kessler
Author: Constantinos Soutis

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