甲虫上翅の層間強化機構に関する一考察

概要

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The interlaminar peeling test of a beetle fore-wing for A. dichotoma was conducted and the reinforcement mechanism, especially for interlaminar reinforcement, was investigated. As a result, many load peaks in load-displacement curves were observed and the number for them was equal to the number of trabeculae found in chitin fiber laminas. This showed that the fracture of one trabecula contributed to one load peak, which then contributed to interlaminar strength. The increment of interlaminar strength by the trabeculae in chitin fiber laminas was about 30 times in a 10cal region and about 3 times in a whole region as large as that in the chitin fiber laminas without trabeculae. It was found that chitin fibers connected between the chitin fiber laminas and the trabeculae were of a curved shape and continuous, and the trabeculae bonding chitin fiber laminas were distributed in two dimensions in the plane of a chitin fiber lamina. Furthermore, a strong reinforcement mechanism in nature was made clear and a model for the reinforcement mechanism was proposed.
社団法人日本機械学会の論文
2001-02-25