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http://dx.doi.org/10.5139/JKSAS.2003.31.2.051

Low Velocity Impact Monitoring for a Composite Sandwich Beam Using Piezo Thin Film Sensors  

Park, Chan Ik (국방과학연구소)
Lee, Gwan Ho (충남대학교)
Kim, In Geol (충남대학교)
Lee, Yeong Sin (충남대학교)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.31, no.2, 2003 , pp. 51-56 More about this Journal
Abstract
The piezoelectric thin film(PVDF: polyvinylidene fluoride) sensors having good dynamic sensing charachteristics can be used to monitor low vwlocit impact on composite structures. The impact response function for composite sandwich beam was derved. The impact tests at low energy without inducing damage were performed on the instrumented drop weight impact tester. The measured signals of PVDF sensors attached on the surface of the beam agreed well with the simulated signals. And the inverse technique was applied to reconstruct the impact forces from the PVDF sensor signals. Most of reconstructed impact forces showed good agreement with the measured forces. The comparison results showed that the piezoelectric thin film sensor can be used to monitor the low velocity impact on composite sandwich structures.
Keywords
Piezoelectric Thin Film Sensor; Low Velocity Impact; Composite Sandwich Beam;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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