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Damage detection in composite materials using frequency response methods

Damage detection in composite materials using frequency response methods
Damage detection in composite materials using frequency response 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 the in situ detection of damage in composite materials. The experimental results are presented for the application of modal analysis techniques applied to graphite/epoxy specimens containing representative damage modes. Changes in natural frequencies and modes were found using a laser vibrometer, and 2-D finite element models were created for comparison with the experimental results. The models accurately predicted the response of the specimens at low frequencies, but coalescence of higher frequency modes makes mode-dependant damage detection difficult for structural applications. The frequency response method was found to be reliable for detecting even small amounts of damage in a simple composite structure, however the potentially important information about damage type, size, location and orientation were lost using this method since several combinations of these variables can yield identical response signatures.
polymer–matrix composites, vibration, finite element analysis, non-destructive testing
1359-8368
87-95
Kessler, Seth S.
20a4d107-0f18-4c32-a684-18d83ce9570f
Spearing, S. Mark
9e56a7b3-e0e8-47b1-a6b4-db676ed3c17a
Atalla, Mauro J.
f2469009-d8df-42b7-a7ca-9e8fdbb96f9a
Cesnik, Carlos E.S.
63edbc17-7dec-4d37-91c0-444f06213823
Soutis, Constantinos
9e86a245-6773-4977-881e-74940e860808
Kessler, Seth S.
20a4d107-0f18-4c32-a684-18d83ce9570f
Spearing, S. Mark
9e56a7b3-e0e8-47b1-a6b4-db676ed3c17a
Atalla, Mauro J.
f2469009-d8df-42b7-a7ca-9e8fdbb96f9a
Cesnik, Carlos E.S.
63edbc17-7dec-4d37-91c0-444f06213823
Soutis, Constantinos
9e86a245-6773-4977-881e-74940e860808

Kessler, Seth S., Spearing, S. Mark, Atalla, Mauro J., Cesnik, Carlos E.S. and Soutis, Constantinos (2002) Damage detection in composite materials using frequency response methods. Composites Part B: Engineering, 33 (1), 87-95. (doi:10.1016/S1359-8368(01)00050-6).

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 the in situ detection of damage in composite materials. The experimental results are presented for the application of modal analysis techniques applied to graphite/epoxy specimens containing representative damage modes. Changes in natural frequencies and modes were found using a laser vibrometer, and 2-D finite element models were created for comparison with the experimental results. The models accurately predicted the response of the specimens at low frequencies, but coalescence of higher frequency modes makes mode-dependant damage detection difficult for structural applications. The frequency response method was found to be reliable for detecting even small amounts of damage in a simple composite structure, however the potentially important information about damage type, size, location and orientation were lost using this method since several combinations of these variables can yield identical response signatures.

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More information

Published date: 2002
Keywords: polymer–matrix composites, vibration, finite element analysis, non-destructive testing

Identifiers

Local EPrints ID: 23077
URI: http://eprints.soton.ac.uk/id/eprint/23077
ISSN: 1359-8368
PURE UUID: 0a72b702-7dad-49ae-ada6-edccfdc966d8
ORCID for S. Mark Spearing: ORCID iD orcid.org/0000-0002-3059-2014

Catalogue record

Date deposited: 10 Mar 2006
Last modified: 10 Dec 2019 01:45

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Contributors

Author: Seth S. Kessler
Author: Mauro J. Atalla
Author: Carlos E.S. Cesnik
Author: Constantinos Soutis

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