A new approach to predicting multiple damage states in composite laminates with embedded FBG sensors

S. Yashiro, N. Takeda, T. Okabe, H. Sekine

Research output: Contribution to journalArticlepeer-review

97 Citations (Scopus)

Abstract

We propose a new approach to predicting multiple damage states in composite laminates using embedded fiber Bragg grating (FBG) sensors. FBG sensors are sensitive to a non-uniform strain distribution along their longitudinal direction, and the effects appear in the power spectrum of the reflected light from the gage section. In this paper, we propose a numerical model to predict both the damage process of the laminate and the change of the reflection spectrum from the FBG sensor. The proposed approach is then applied to explain the results of a quasi-static tensile test for a notched CFRP cross-ply laminate with an embedded FBG sensor. The results demonstrate that the proposed approach is useful for predicting multiple damage states in composite laminates.

Original languageEnglish
Pages (from-to)659-667
Number of pages9
JournalComposites Science and Technology
Volume65
Issue number3-4
DOIs
Publication statusPublished - Mar 1 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Engineering(all)

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