Mechanical properties of the exocuticle and sections of Cybister elytra
-
摘要: 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。Abstract: The mechanical properties of elytra without epicuticle and sections of Cybister' s elytra were studied. The hardness and elastic modulus of elytra without epicuticle were obtained from the nano-indenter tests and the values are (0.065±0.007) GPa and (0.704±0.013) GPa, which are much smaller than the values of elytra with epicuticle. The mechanical properties of elytra sections follow some rules: On the transverse section, the hardness and elastic modulus in the coupling zone are slightly larger than those in the central and outer zone; and on the longitudeinal section, the hardness and elastic modulus in the central zone are apparently larger than those in the cephalosome and empennage zone.
-
Key words:
- elytra /
- nano-indentation technique /
- exocuticle /
- section /
- hardness /
- elastic modulus
-
点击查看大图
计量
- 文章访问数: 1346
- PDF下载量: 764
- 被引次数: 0
下载:
