著者

小林 大祥 小林 光男 後藤 芳樹

出版者

工学院大学

雑誌

工学院大学研究報告 (ISSN:03685098)

巻号頁・発行日

no.121, pp.1-7, 2016-10-30

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In this paper, tension tests are performed with the dragline silk produced by Nephila Clavata. Tension testingmachine is developed and manufactured for micro-sized materials. The dragline silk is the difficult material toconduct the tension test because the dragline of spider is the fine and ductile line and also the test load is small.From the results of tests, following conclusions are obtained. 1) The continuous stress-strain behavior of spider silkis obtained in 1.0μm/sec constant test speed, and the failure stress of dragline is about 2000MPa. 2) The diameter ofdragline is found to vary among each thread, thus it is necessary to measure the diameter of all specimens. 3) It isunderstood that the failure stress is mostly constant because the failure force of dragline and the cross-sectional areaare proportional to the weight of the spider.