The ISBE is now collecting mature bionic products and technologies from all scholars in the field under the organization of the Standing Vice-President academician Prof. Luquan REN. The collected p…
Due to the ongoing COVID-19 pandemic and the uncertainty of free international travel in the 2020, the organizing committee of the IWBE 2020 have decided to move the conference to 2021. The final t…
[2019-Vol.16-Issue 5] Correlation between Microstructure and Failure Mechanism of Hyriopsis cumingii Shell Structure
Post: 2019-11-06 13:56  View:541

Journal of Bionic Engineering

September 2019, Volume 16, Issue 5, pp 869–881| Cite as

Zhen Zhang,Jun Zhu,Yajie Chu,Zhengnian Chen,Shun Guo,Junqiang Xu

1.School of Materials Science and Engineering,Nanjing Institute of Technology,Nanjing,China

2.Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology,Nanjing,China

3.School of Materials Science and EngineeringNanjing University of Science and Technology,Nanjing,China


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 microscope 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.


Hyriopsis cumingii shell microstructure macro/micro mechanical property crack propagation 

Full text is available at :

Address: C508 Dingxin Building, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
Copyright © 2020 International Society of Bionic Engineering All Rights Reserved