The application of polyvinylidene di-fluoride (PVDF) film as an acoustic emission (AE) sensor appears to be practical to detect the fatigue crack growth in composite materials and structures. A commercially available PVDF film sensor was employed to detect AE due to fatigue crack growth in the single-lap joints of graphite/epoxy laminates. Although the signal-to-noise ratio is not as high as those measured by PZT sensors, the result showed that the location of crack front could be predicted by the linear location of AE signals detected by the PVDF sensors. Since the composite materials usually produce very energetic AE signals, the extremely cost-effective form of PVDF sensors can be permanently mounted on composite structures for structural health monitoring as disposable ones. Piezoelectric polymer sensors are expected to be eventually embedded in composite structures provided the current limit of use temperature being increased by introducing co-polymerization with some heat resistant constituents.
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ASME 2002 International Mechanical Engineering Congress and Exposition
November 17–22, 2002
New Orleans, Louisiana, USA
Conference Sponsors:
- Nondestructive Evaluation Division
ISBN:
0-7918-3649-5
PROCEEDINGS PAPER
A Disposable PVDF Sensor Applied for the Detection of Fatigue Crack Growth in Bonded Composite Joints
Oh-Yang Kwon,
Oh-Yang Kwon
Inha University, Inchon, South Korea
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Dana Brosig,
Dana Brosig
University of Nebraska, Lincoln, NE
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Kalyan Nistala,
Kalyan Nistala
University of Nebraska, Lincoln, NE
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Yuris A. Dzenis
Yuris A. Dzenis
University of Nebraska, Lincoln, NE
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Oh-Yang Kwon
Inha University, Inchon, South Korea
Dana Brosig
University of Nebraska, Lincoln, NE
Kalyan Nistala
University of Nebraska, Lincoln, NE
Yuris A. Dzenis
University of Nebraska, Lincoln, NE
Paper No:
IMECE2002-33489, pp. 97-102; 6 pages
Published Online:
June 3, 2008
Citation
Kwon, O, Brosig, D, Nistala, K, & Dzenis, YA. "A Disposable PVDF Sensor Applied for the Detection of Fatigue Crack Growth in Bonded Composite Joints." Proceedings of the ASME 2002 International Mechanical Engineering Congress and Exposition. Nondestructive Evaluation. New Orleans, Louisiana, USA. November 17–22, 2002. pp. 97-102. ASME. https://doi.org/10.1115/IMECE2002-33489
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