Analysis of thermal deformation on a honeycomb sandwich CFRP mirror

Yoshihiko Arao*, Jun Koyanagi, Shin Utsunomiya, Hiroyuki Kawada

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)


Thermal deformation analysis was performed on a carbon fiber reinforced plastic (CFRP) mirror with sandwich structure. To obtain unexpected asymmetry of the surface sheet, we investigated the deformation of a quasi-isotropic laminate under hot and humid conditions. Despite the symmetric lay-up, quasi-isotropic laminate deforms into twisted saddle shape with time, and this deformation could be simulated by assuming ply angle misalignment. Then, the elastic moduli of honeycomb cores were calculated theoretically. A honeycomb sandwich mirror model was constructed by adopting a sheet model and using honeycomb elements. The thermal deformation analysis was performed considering the ply angle misalignment. The test results clarified that the deformation of the surface sheet was a critical factor in the dimensional stability of the CFRP mirror.

Original languageEnglish
Pages (from-to)328-334
Number of pages7
JournalMechanics of Advanced Materials and Structures
Issue number5
Publication statusPublished - 2010 Jul


  • Dimensional stability
  • Finite element analysis (FEA)
  • Polymer-matrix composites (PMCs)
  • Sandwich
  • Thermal deformation

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • General Mathematics
  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering


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