This study focuses on an active monitoring method for damage detection applied to composite structures. Honeycomb sandwich and carbon fiber composite structures are studied. Two kinds of damage are considered: delamination and impact damage. Wavelet analysis methods are adopted to postprocess the raw monitored signal. A new damage signature is introduced to determine the presence and extent of damage in composites, while eliminating the influence of different distances between the active actuator and active monitoring elements. The proposed method is shown to be effective, reliable, and straightforward for the specimens considered in the present study, which are composed of different materials and suffer various levels of damage. An online real-time active monitoring system for damage detection is described that is based on this research.
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April 2003
Technical Papers
Active Monitoring for On-Line Damage Detection in Composite Structures
Shenfang Yuan, Professor,,
e-mail: ysf@nuaa.edu.cn
Shenfang Yuan, Professor,
The Aeronautical Key Laboratory for Smart Materials and Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, Peoples Republic of China 210016
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Wang Lei, Graduate Student,,
e-mail: WangLeiBox@hotmail.com
Wang Lei, Graduate Student,
The Aeronautical Key Laboratory for Smart Materials and Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, Peoples Republic of China 210016
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Lihua Shi, Associate Professor,
e-mail: shi_lh2000@yahoo.com
Lihua Shi, Associate Professor,
The Aeronautical Key Laboratory for Smart Materials and Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, Peoples Republic of China 210016
Search for other works by this author on:
Shenfang Yuan, Professor,
The Aeronautical Key Laboratory for Smart Materials and Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, Peoples Republic of China 210016
e-mail: ysf@nuaa.edu.cn
Wang Lei, Graduate Student,
The Aeronautical Key Laboratory for Smart Materials and Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, Peoples Republic of China 210016
e-mail: WangLeiBox@hotmail.com
Lihua Shi, Associate Professor,
The Aeronautical Key Laboratory for Smart Materials and Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, Peoples Republic of China 210016
e-mail: shi_lh2000@yahoo.com
Contributed by the Technical Committee on Vibration and Sound for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received Nov. 2001; Revised May 2002. Associate Editor: C. Farrar.
J. Vib. Acoust. Apr 2003, 125(2): 178-186 (9 pages)
Published Online: April 1, 2003
Article history
Received:
November 1, 2001
Revised:
May 1, 2002
Online:
April 1, 2003
Citation
Yuan, S., Lei, W., and Shi, L. (April 1, 2003). "Active Monitoring for On-Line Damage Detection in Composite Structures ." ASME. J. Vib. Acoust. April 2003; 125(2): 178–186. https://doi.org/10.1115/1.1547464
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