An enhanced time-reversal method for impact damage monitoring on plate-like structures

Chunlin Chen, Yulong Li, Fuh Gwo Yuan

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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.

Original languageEnglish
Title of host publicationAdvances in Fracture and Damage Mechanics XI
PublisherTrans Tech Publications Ltd
Pages365-368
Number of pages4
ISBN (Print)9783037854631
DOIs
StatePublished - 2012
Event11th International Conference on Fracture and Damage Mechanics, FDM 2012 - Xian, China
Duration: 18 Sep 201221 Sep 2012

Publication series

NameKey Engineering Materials
Volume525-526
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Conference

Conference11th International Conference on Fracture and Damage Mechanics, FDM 2012
Country/TerritoryChina
CityXian
Period18/09/1221/09/12

Keywords

  • Calibration spacing
  • Impact damage
  • Impact location detection
  • Plate-like structure
  • Time-reversal method

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