Time-dependent Out-of-plane deformation of symmetric laminate including small fiber misaligned

Yoshihiko Arao, Jun Koyanagi, Hiroshi Terada, Hiroyuki Kawada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this study, we focused on the geometrical change of symmetric laminates that are widely used for the composite structures. The behavior of time-dependent out-of-plane deformation under high temperature and humidity was examined with high accuracy. The geometries of the CFRP plates were measured after constant time. It was obvious that the main factor which causes geometrical change was moisture absorption at 80°C, 90%RH environment. The geometrical change was calculated based on Finite Element Analysis considering fiber misalignment. Coupling analysis including stress and diffusion analysis was performed to reproduce the time-dependent deformation. In this analysis, we rotated the layer of the symmetric laminate about 5 degrees, so specifically the model was asymmetric, and the coupling effects that arose bending by tension took place due to moisture absorption. Quasi-isotropic laminate model including small fiber misalignment deformed into saddle shape and twisted saddle shape. It was predicted that it must be needed to control fiber alignment strictly when we product CFRP laminate with high dimensional stability.

Original languageEnglish
Title of host publicationProgress of Composites 2008 in Asia and Australasia - Proceedings of the 6th Asian-Australasian Conference on Composite Materials, ACCM 2008
Pages297-299
Number of pages3
Publication statusPublished - 2008 Dec 1
Event6th Asian-Australasian Conference on Composite Materials: Progress of Composites 2008 in Asia and Australasia, ACCM 2008 - Kumamoto, Kyushu, Japan
Duration: 2008 Sep 232008 Sep 26

Publication series

NameProgress of Composites 2008 in Asia and Australasia - Proceedings of the 6th Asian-Australasian Conference on Composite Materials, ACCM 2008

Conference

Conference6th Asian-Australasian Conference on Composite Materials: Progress of Composites 2008 in Asia and Australasia, ACCM 2008
CountryJapan
CityKumamoto, Kyushu
Period08/9/2308/9/26

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Keywords

  • Deformation
  • Finite element analysis (FEA)
  • Hygrothermal effect
  • Polymer-matrix composite

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Arao, Y., Koyanagi, J., Terada, H., & Kawada, H. (2008). Time-dependent Out-of-plane deformation of symmetric laminate including small fiber misaligned. In Progress of Composites 2008 in Asia and Australasia - Proceedings of the 6th Asian-Australasian Conference on Composite Materials, ACCM 2008 (pp. 297-299). (Progress of Composites 2008 in Asia and Australasia - Proceedings of the 6th Asian-Australasian Conference on Composite Materials, ACCM 2008).