Time-dependent out-of-plane deformation of UD-CFRP in humid environment

Yoshihiko Arao; Jun Koyanagi; Shin Utsunomiya; Hiroyuki Kawada

doi:10.1016/j.compscitech.2008.08.029

Time-dependent out-of-plane deformation of UD-CFRP in humid environment

Yoshihiko Arao, Jun Koyanagi, Shin Utsunomiya, Hiroyuki Kawada

School of Fundamental Science and Engineering

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

Time-dependent out-of-plane deformation of UD-CFRP (unidirectional CFRP laminate) caused by subjection to a humid environment was examined and analyzed. The UD-CFRP plate showed unpredictable geometrical variation with time in a humid environment, like asymmetric materials. The unpredictability was caused by non-uniform fiber distribution in the thickness direction of the specimen. A three-dimensional diffusion-stress coupling analysis considering the non-uniform fiber distribution was conducted based on finite element analysis. The analytical results showed very good agreement with the experimental results. Furthermore, the relationship between the non-uniform fiber distribution and the out-of-plane deformation with time was obtained quantitatively.

Original language	English
Pages (from-to)	1720-1725
Number of pages	6
Journal	Composites Science and Technology
Volume	69
Issue number	11-12
DOIs	https://doi.org/10.1016/j.compscitech.2008.08.029
Publication status	Published - 2009 Sep 1

Keywords

A. Polymer-matrix composites (PMCs)
B. Hygrothermal effect
C. Deformation
C. Finite element analysis (FEA)
C. Laminate

ASJC Scopus subject areas

Ceramics and Composites
Engineering(all)

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abstract = "Time-dependent out-of-plane deformation of UD-CFRP (unidirectional CFRP laminate) caused by subjection to a humid environment was examined and analyzed. The UD-CFRP plate showed unpredictable geometrical variation with time in a humid environment, like asymmetric materials. The unpredictability was caused by non-uniform fiber distribution in the thickness direction of the specimen. A three-dimensional diffusion-stress coupling analysis considering the non-uniform fiber distribution was conducted based on finite element analysis. The analytical results showed very good agreement with the experimental results. Furthermore, the relationship between the non-uniform fiber distribution and the out-of-plane deformation with time was obtained quantitatively.",

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AU - Koyanagi, Jun

AU - Utsunomiya, Shin

AU - Kawada, Hiroyuki

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N2 - Time-dependent out-of-plane deformation of UD-CFRP (unidirectional CFRP laminate) caused by subjection to a humid environment was examined and analyzed. The UD-CFRP plate showed unpredictable geometrical variation with time in a humid environment, like asymmetric materials. The unpredictability was caused by non-uniform fiber distribution in the thickness direction of the specimen. A three-dimensional diffusion-stress coupling analysis considering the non-uniform fiber distribution was conducted based on finite element analysis. The analytical results showed very good agreement with the experimental results. Furthermore, the relationship between the non-uniform fiber distribution and the out-of-plane deformation with time was obtained quantitatively.

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