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研究了东方龙虱去除外表皮后的鞘翅内表皮层及其鞘翅断面的力学性能。利用纳米压痕仪测得鞘翅内表皮层硬度和弹性模量分别为(0.065±0.007)GPa和(0.704±0.013)GPa,均远远小于鞘翅外表皮层的硬度和弹性模量。鞘翅断面的力学性能测试结果表明:在鞘翅横断面上,靠近联接部位的硬度和弹性模量略大于鞘翅中部和外侧;而在鞘翅纵向断面上,鞘翅中部的硬度和弹性模量明显大于头部和尾部,其断面力学性能呈现一定的分布规律。
The mechanical properties of the inner sheath of the coleoptile and its coleoptile cross-section after removal of the outer skin of the Oriental dragonfly were studied. The hardness and elastic modulus of the inner sheath of coleoptile measured by nano indenter were (0.065 ± 0.007) GPa and (0.704 ± 0.013) GPa, respectively, which were far less than the hardness and elastic modulus of the outer sheath of coleoptile. The test results of the mechanical properties of the coleoptile showed that the hardness and elastic modulus near the joint were slightly greater than those at the middle and the outer sides of the coleoptile on the transverse plane of the coleoptile. And tail, the mechanical properties of the section showed a certain distribution.