Development of Health Monitoring Techniques for Composite Structures

Abstract

The purpose of this project is to develop two kinds of composite structural health monitoring approaches. One is a passive element based on the impact force identification combined with a database. This database can quickly evaluate the impact-induced damages in composites by employing the identified impact force. It can be built up by using a powerful numerical model for impact damage evaluation with the help of experimental data. Another is an active element based on the Lamb wave. These two stable and reliable structural health monitoring techniques can then be used to more practical situations. The majority of the aims of this project have been successfully achieved. The major achievements of our group have been the following: 1) an efficient impact force identification technique without resort to numerical models has been developed; 2) a powerful numerical model based on the finite element method for predicting the impact-induced damages has been built up; 3) a Lamb wave based on structural health monitoring technique without baseline data has been developed which is used in metallic and composite structures.

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Document Details

Document Type
Technical Report
Publication Date
Nov 07, 2007
Accession Number
ADA474730

Entities

People

  • Hisao Fukunaga
  • Ning Hu

Organizations

  • Tohoku University

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Aircrafts
  • Carbon Fiber Reinforced Polymer
  • Composite Materials
  • Composite Structures
  • Experimental Data
  • Finite Element Analysis
  • Identification Systems
  • Laminates
  • Measurement
  • Mechanics
  • Strain Gages
  • Structural Health Monitoring
  • Test And Evaluation
  • Transducers
  • Two Dimensional
  • Wave Propagation
  • Waveforms

Fields of Study

  • Engineering

Readers

  • Surface Coatings Technology.
  • Systems Analysis and Design