Embedded PVDF film sensor for in-situ monitoring of structural integrity of laminated composites

Oh Yang Kwon, Yuris Dzenis

Research output: Contribution to journalConference article

5 Citations (Scopus)

Abstract

The application of polyvinylidene fluoride (PVDF) film as an acoustic emission (AE) sensor appears to be very practical. 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 film sensors can be permanently mounted on composite structures for structural health monitoring as disposable ones. The film sensors are expected to be eventually embedded in composite structures provided the current limit of use temperature can be increased.

Original languageEnglish (US)
Pages (from-to)1929-1934
Number of pages6
JournalKey Engineering Materials
Volume270-273
Issue numberIII
StatePublished - Nov 25 2004
EventProceedings of the 11th Asian Pacific Conference on Nondestructive Testing - Jeju Island, Korea, Republic of
Duration: Nov 3 2003Nov 7 2003

Fingerprint

Laminated composites
Structural integrity
Acoustic emissions
Monitoring
Sensors
Composite structures
Graphite
Structural health monitoring
Fatigue crack propagation
Laminates
polyvinylidene fluoride
Signal to noise ratio
Cracks
Composite materials
Costs

Keywords

  • Composites
  • Embedded AE sensor
  • Joints
  • PVDF
  • Structural health monitoring

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemical Engineering (miscellaneous)

Cite this

Embedded PVDF film sensor for in-situ monitoring of structural integrity of laminated composites. / Kwon, Oh Yang; Dzenis, Yuris.

In: Key Engineering Materials, Vol. 270-273, No. III, 25.11.2004, p. 1929-1934.

Research output: Contribution to journalConference article

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abstract = "The application of polyvinylidene fluoride (PVDF) film as an acoustic emission (AE) sensor appears to be very practical. 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 film sensors can be permanently mounted on composite structures for structural health monitoring as disposable ones. The film sensors are expected to be eventually embedded in composite structures provided the current limit of use temperature can be increased.",
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AB - The application of polyvinylidene fluoride (PVDF) film as an acoustic emission (AE) sensor appears to be very practical. 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 film sensors can be permanently mounted on composite structures for structural health monitoring as disposable ones. The film sensors are expected to be eventually embedded in composite structures provided the current limit of use temperature can be increased.

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