Impact damage detection in composite plates using deflectometry and the Virtual Fields Method

C. Devivier*, F. Pierron, M. R. Wisnom

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

30 Citations (Scopus)

Abstract

This paper presents a new method for detecting damage in layered composite materials using a simple measurement technique, deflectometry. The aim is to locate the damage in a specimen and provide a "signature" from the measured surface slopes. Firstly, this method is applied to plate specimens using numerical and experimental data. Secondly, damage indicator based on a new application of the virtual fields method to compute local apparent gaps in equilibrium is presented and used to process the measurements on plates. It is shown that the damage indicator is very sensitive, allowing detection of damage that is difficult to identify directly from the strain maps. (C) 2013 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)201-218
Number of pages18
JournalComposites Part A: Applied Science and Manufacturing
Volume48
Issue number1
DOIs
Publication statusPublished - 25 Mar 2013

Keywords

  • CARBON-FIBER COMPOSITES
  • INVERSE METHOD
  • Non-destructive testing
  • ACOUSTIC MICROSCOPY
  • STIFFNESS
  • CFRP
  • PANELS
  • Damage mechanics
  • IDENTIFICATION
  • LOW-VELOCITY IMPACT
  • COMPUTED-TOMOGRAPHY
  • Layered structures
  • Delamination

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