Correlation between Microstructure and Failure Mechanism of Hyriopsis cumingii Shell Structure

• 作者: Jun Zhu Junqiang Xu Shun Guo Yajie Chu Zhen Zhang Zhengnian Chen
• 来源期刊: 仿生工程学报（英文版）
• 年，卷（期）: 2019,（5）
• 页码范围: 869-881
• 页数: 13页
• 语种: 英文

摘要

In nature, shells exhibit remarkable high toughness and impact resistance to the external load despite their brittle main constituent and simple hierarchical structure. In this work, the structure of the mussel shell Hyriopsis cumingii is analyzed by scanning electron micro-scope and atomic force microscope, and the macro/micro compression and impact tests are performed. Results show that the shell has a three-layer structure: an outer cuticle layer, a prismatic layer, and a nacreous layer. The stiffer and load-dependent prismatic layer is conducive to improve the impact resistance of shell structure. Fracture morphology after failure proves that cracks are transgranularly propagated inside the prism and aragonite platelet, and the crack deflection and platelet pullout can effectively lock the stress, thereby eventually improving the impact-resistance and toughness of the shell.

作者信息

序号	姓名	单位	发文数	被引次数	H指数	G指数
1	Zhen Zhang		1	0	0.0	0.0
2	Jun Zhu		1	0	0.0	0.0
3	Yajie Chu		1	0	0.0	0.0
4	Zhengnian Chen		1	0	0.0	0.0
5	Shun Guo		1	0	0.0	0.0
6	Junqiang Xu		1	0	0.0	0.0