TY - JOUR
T1 - Time-dependent out-of-plane deformation of UD-CFRP in humid environment
AU - Arao, Yoshihiko
AU - Koyanagi, Jun
AU - Utsunomiya, Shin
AU - Kawada, Hiroyuki
N1 - Funding Information:
This work was supported as a part of the 21st century Center of Excellence Program and Mizuho Foundation for the Promotion of Science.
PY - 2009/9
Y1 - 2009/9
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.
AB - 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.
KW - A. Polymer-matrix composites (PMCs)
KW - B. Hygrothermal effect
KW - C. Deformation
KW - C. Finite element analysis (FEA)
KW - C. Laminate
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U2 - 10.1016/j.compscitech.2008.08.029
DO - 10.1016/j.compscitech.2008.08.029
M3 - Article
AN - SCOPUS:67649088090
VL - 69
SP - 1720
EP - 1725
JO - Composites Science and Technology
JF - Composites Science and Technology
SN - 0266-3538
IS - 11-12
ER -