Experimental investigation of damage detection in composite material structures using a laser vibrometer and piezoelectric actuators

A. Ghoshal, Aditi Chattopadhyay, M. J. Schulz, R. Thornburgh, K. Waldron

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

An experimental investigation to detect embedded delamination and other forms of damage in heterogeneous structures using smart materials and a laser vibrometer is presented. Typically, piezoelectric actuators and sensors have been used for characterizing the presence of damage in composite structures. However, the interpretation of vibration responses in identifying damage using such a procedure is strongly dependent upon the numbers and types of sensors and actuators used. The use of Vibration Deflection Shapes (VDSs), which are the actual vibration patterns of a structure undergoing steady-state vibration, is an alternative approach that is investigated in this paper. Experiments are conducted on composite structures with piezoelectric actuator patches and embedded delaminations, using the VDS method and a Scanning Laser Doppler Vibrometer. The laser vibrometer provides a dense pattern of measurements of the structural response, which effectively increases sensor density compared to the widely spaced piezoceramic sensors used in other techniques. A series of experiments is performed on composite plate-beams with various sizes, ply-level locations and placement of delaminations to comprehensively evaluate the performance of the laser technique. The VDSs are shown to be sensitive to structural parameter variations, and hence can be used to detect and located damage in large composite structures, including a woven fiberglass curved plate and a honeycomb intertank panel. The successul experimental demonstration of the procedure using different test articles shows that the VDS method can become an effective and time saving tool for structural health monitoring, particularly for detection of damage in composites.

Original languageEnglish (US)
Pages (from-to)521-537
Number of pages17
JournalJournal of Intelligent Material Systems and Structures
Volume14
Issue number8
DOIs
StatePublished - Aug 2003

Fingerprint

Piezoelectric actuators
Damage detection
Composite structures
Delamination
Lasers
Sensors
Composite materials
Intelligent materials
Structural health monitoring
Demonstrations
Actuators
Experiments
Scanning

Keywords

  • Composite structures
  • Delamination
  • Laser vibrometry
  • Structural health monitoring
  • Vibration deflection shapes

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Experimental investigation of damage detection in composite material structures using a laser vibrometer and piezoelectric actuators. / Ghoshal, A.; Chattopadhyay, Aditi; Schulz, M. J.; Thornburgh, R.; Waldron, K.

In: Journal of Intelligent Material Systems and Structures, Vol. 14, No. 8, 08.2003, p. 521-537.

Research output: Contribution to journalArticle

@article{e9e091c962614b13ab37cf0c7345ec5f,
title = "Experimental investigation of damage detection in composite material structures using a laser vibrometer and piezoelectric actuators",
abstract = "An experimental investigation to detect embedded delamination and other forms of damage in heterogeneous structures using smart materials and a laser vibrometer is presented. Typically, piezoelectric actuators and sensors have been used for characterizing the presence of damage in composite structures. However, the interpretation of vibration responses in identifying damage using such a procedure is strongly dependent upon the numbers and types of sensors and actuators used. The use of Vibration Deflection Shapes (VDSs), which are the actual vibration patterns of a structure undergoing steady-state vibration, is an alternative approach that is investigated in this paper. Experiments are conducted on composite structures with piezoelectric actuator patches and embedded delaminations, using the VDS method and a Scanning Laser Doppler Vibrometer. The laser vibrometer provides a dense pattern of measurements of the structural response, which effectively increases sensor density compared to the widely spaced piezoceramic sensors used in other techniques. A series of experiments is performed on composite plate-beams with various sizes, ply-level locations and placement of delaminations to comprehensively evaluate the performance of the laser technique. The VDSs are shown to be sensitive to structural parameter variations, and hence can be used to detect and located damage in large composite structures, including a woven fiberglass curved plate and a honeycomb intertank panel. The successul experimental demonstration of the procedure using different test articles shows that the VDS method can become an effective and time saving tool for structural health monitoring, particularly for detection of damage in composites.",
keywords = "Composite structures, Delamination, Laser vibrometry, Structural health monitoring, Vibration deflection shapes",
author = "A. Ghoshal and Aditi Chattopadhyay and Schulz, {M. J.} and R. Thornburgh and K. Waldron",
year = "2003",
month = "8",
doi = "10.1177/104538903036212",
language = "English (US)",
volume = "14",
pages = "521--537",
journal = "Journal of Intelligent Material Systems and Structures",
issn = "1045-389X",
publisher = "SAGE Publications Ltd",
number = "8",

}

TY - JOUR

T1 - Experimental investigation of damage detection in composite material structures using a laser vibrometer and piezoelectric actuators

AU - Ghoshal, A.

AU - Chattopadhyay, Aditi

AU - Schulz, M. J.

AU - Thornburgh, R.

AU - Waldron, K.

PY - 2003/8

Y1 - 2003/8

N2 - An experimental investigation to detect embedded delamination and other forms of damage in heterogeneous structures using smart materials and a laser vibrometer is presented. Typically, piezoelectric actuators and sensors have been used for characterizing the presence of damage in composite structures. However, the interpretation of vibration responses in identifying damage using such a procedure is strongly dependent upon the numbers and types of sensors and actuators used. The use of Vibration Deflection Shapes (VDSs), which are the actual vibration patterns of a structure undergoing steady-state vibration, is an alternative approach that is investigated in this paper. Experiments are conducted on composite structures with piezoelectric actuator patches and embedded delaminations, using the VDS method and a Scanning Laser Doppler Vibrometer. The laser vibrometer provides a dense pattern of measurements of the structural response, which effectively increases sensor density compared to the widely spaced piezoceramic sensors used in other techniques. A series of experiments is performed on composite plate-beams with various sizes, ply-level locations and placement of delaminations to comprehensively evaluate the performance of the laser technique. The VDSs are shown to be sensitive to structural parameter variations, and hence can be used to detect and located damage in large composite structures, including a woven fiberglass curved plate and a honeycomb intertank panel. The successul experimental demonstration of the procedure using different test articles shows that the VDS method can become an effective and time saving tool for structural health monitoring, particularly for detection of damage in composites.

AB - An experimental investigation to detect embedded delamination and other forms of damage in heterogeneous structures using smart materials and a laser vibrometer is presented. Typically, piezoelectric actuators and sensors have been used for characterizing the presence of damage in composite structures. However, the interpretation of vibration responses in identifying damage using such a procedure is strongly dependent upon the numbers and types of sensors and actuators used. The use of Vibration Deflection Shapes (VDSs), which are the actual vibration patterns of a structure undergoing steady-state vibration, is an alternative approach that is investigated in this paper. Experiments are conducted on composite structures with piezoelectric actuator patches and embedded delaminations, using the VDS method and a Scanning Laser Doppler Vibrometer. The laser vibrometer provides a dense pattern of measurements of the structural response, which effectively increases sensor density compared to the widely spaced piezoceramic sensors used in other techniques. A series of experiments is performed on composite plate-beams with various sizes, ply-level locations and placement of delaminations to comprehensively evaluate the performance of the laser technique. The VDSs are shown to be sensitive to structural parameter variations, and hence can be used to detect and located damage in large composite structures, including a woven fiberglass curved plate and a honeycomb intertank panel. The successul experimental demonstration of the procedure using different test articles shows that the VDS method can become an effective and time saving tool for structural health monitoring, particularly for detection of damage in composites.

KW - Composite structures

KW - Delamination

KW - Laser vibrometry

KW - Structural health monitoring

KW - Vibration deflection shapes

UR - http://www.scopus.com/inward/record.url?scp=0141988642&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0141988642&partnerID=8YFLogxK

U2 - 10.1177/104538903036212

DO - 10.1177/104538903036212

M3 - Article

AN - SCOPUS:0141988642

VL - 14

SP - 521

EP - 537

JO - Journal of Intelligent Material Systems and Structures

JF - Journal of Intelligent Material Systems and Structures

SN - 1045-389X

IS - 8

ER -