Impact force identification of CFRP structures using experimental transfer matrices

S. Atobe, H. Fukunaga, N. Hu

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

This paper presents a method for identifying the location and force history of an impact force acting on CFRP structures such as laminated plates and stiffened panels. The identification method is an experimental one without using any analytical model of the structure. Here, experimental transfer matrices, which relate the impact force to the corresponding responses of PZT sensors, are used to identify the impact force. The transfer matrices are preliminarily constructed from the measured data obtained by impact tests with an impulse hammer. To identify the impact location, the arrival times of the flexural waves to the PZT sensors are used, and an analog band-pass filter is used to obtain waves with a specified frequency. The wave velocity is determined experimentally from impact test results. The present method is verified experimentally by performing impact force identification of CFRP laminated plates and CFRP stiffened panels. The results reveal that the location and force history of the impact force can be identified accurately and rapidly using the present method.

Original languageEnglish
Pages (from-to)67-90
Number of pages24
JournalComputers, Materials and Continua
Volume26
Issue number1
Publication statusPublished - 2011

Keywords

  • CFRP structures
  • Force history
  • Identification
  • Impact location

ASJC Scopus subject areas

  • Biomaterials
  • Modelling and Simulation
  • Mechanics of Materials
  • Computer Science Applications
  • Electrical and Electronic Engineering

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