Thermal expansion of carbon-epoxy laminates measured with embedded FBGS - Comparison with other experimental techniques and numerical simulation

Matthieu Mulle*, R. Zitoune, F. Collombet, P. Olivier, Y. H. Grunevald

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

This paper deals with a mixed experimental-theoretical approach aiming to evaluate information given by optical fiber Bragg gratings embedded in carbon-epoxy laminates submitted to thermal expansion. FBG instrumented elementary and structural specimens are considered. The study is undertaken through a comparison of values obtained on the one hand experimentally with high temperature resisting foil gages and thermo mechanical analysis (TMA) and on the other hand numerically through a non linear FEM simulation. Discrepancies are observed when specimens are of UD type and good agreements appear when specimens are of approaching isotropic stacking sequence. To some extent, transverse effects are suspected to have a non negligible influence on the strain information delivered by the embedded FBG.

Original languageEnglish (US)
Pages (from-to)1414-1424
Number of pages11
JournalComposites Part A: Applied Science and Manufacturing
Volume38
Issue number5
DOIs
StatePublished - May 1 2007

Keywords

  • A. Carbon fiber
  • B. Residual/internal stress
  • C. Finite element analysis
  • D. Thermal analysis
  • Laminates
  • Optical fiber sensing
  • Thermomechanical

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials

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