An Enhanced Time-Reversal Method for Impact Damage Monitoring on Plate-Like Structures

Chun Lin Chen; Yu Long Li; Fuh Gwo Yuan

doi:10.4028/www.scientific.net/KEM.525-526.365

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An Enhanced Time-Reversal Method for Impact Damage Monitoring on Plate-Like Structures
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HomeKey Engineering MaterialsKey Engineering Materials Vols. 525-526An Enhanced Time-Reversal Method for Impact Damage...

An Enhanced Time-Reversal Method for Impact Damage Monitoring on Plate-Like Structures

Abstract:

Based on the self-focusing property of time-reversal (T-R) concept, a time focusing parameter was suggested to improve the impact source identification method developed in authors previous work. This paper presents a further study on monitoring relatively high energy impact events which caused induced damage on structures. Numerical verifications for a finite isotropic plate and a composite plate under low velocity impacts are performed to demonstrate the versatility of T-R method for impact location detection with induced plastic deformation and delamination damage on metallic and composite structures respectively. The focusing property of T-R concept was adequately utilized to detect impact/damage location. The results show that impact events with various features can be localized using T-R method by introducing the time focusing parameter. It is suited to monitor serious impact events on plate like structures in practice in future.

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Periodical:

Key Engineering Materials (Volumes 525-526)

Pages:

365-368

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.525-526.365

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Online since:

November 2012

Authors:

Chun Lin Chen, Yu Long Li, Fuh Gwo Yuan

Keywords:

Calibration Spacing, Impact Damage, Impact Location Detection, Plate-Like Structure, Time-Reversal Method

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