Evaluation of bending rigidity in newly developed light-weight core panels

Kazuya Saito, Taketoshi Nojima, Hiroaki Morimura, Ichiro Hagiwara

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Dia-Core is a newly devised core panel formed by gluing/welding of two same shaped panel pieces which have periodically indents. The basic model of Dia-core is based on Octet-Truss developed by Fuller, and it consists of tetrahedra and octahedra. It has good cost performance due to easy press forming. Therefore, it is expected to become new core materials which can compete with honeycomb panels from the total points of view. In this paper, by using experiments and numerical simulations, the bending rigidity, a representative propertie of Dia-Core is clarified. The results suggest that the bending rigidity of Dia-core is proportional to the initial thickness of panel pieces and the square of the panel height. These trends can be explained by the application of the theory of sandwich structures. And by using these results, the specific rigidity of Dia-core is calculated and compared with that of two typical honeycomb panels.

Original languageEnglish
Pages (from-to)259-265
Number of pages7
JournalNihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Issue number750
Publication statusPublished - Feb 2009
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering


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