Three-Point Bending Fracture Behavior of Single Oriented Crossed-Lamellar Structure in Scapharca broughtonii Shell

Materials

Hong-Mei Ji¹  Wen-Qian Zhang¹  Xu Wang¹  Xiao-Wu Li¹ 

[1] Institute of Materials Physics and Chemistry, College of Sciences, Northeastern University, Shenyang 110819, China; E-Mails:

关键词: Scapharca broughtonii shell;    crossed-lamellar structure;    three-point bending;    strength;    fracture;   

DOI  :  10.3390/ma8095298

来源: mdpi

【 摘 要 】

The three-point bending strength and fracture behavior of single oriented crossed-lamellar structure in Scapharca broughtonii shell were investigated. The samples for bending tests were prepared with two different orientations perpendicular and parallel to the radial ribs of the shell, which corresponds to the tiled and stacked directions of the first-order lamellae, respectively. The bending strength in the tiled direction is approximately 60% higher than that in the stacked direction, primarily because the regularly staggered arrangement of the second-order lamellae in the tiled direction can effectively hinder the crack propagation, whereas the cracks can easily propagate along the interfaces between lamellae in the stacked direction.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.