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

被引：14

作者：

Ji, Hong-Mei ^{[1
]}

Zhang, Wen-Qian ^{[1
]}

Wang, Xu ^{[1
]}

Li, Xiao-Wu ^{[1
,2
]}

机构：

[1] Northeastern Univ, Inst Mat Phys & Chem, Coll Sci, Shenyang 110819, Peoples R China

[2] Northeastern Univ, Key Lab Anisotropy & Texture Engn Mat, Minist Educ, Shenyang 110819, Peoples R China

来源：

MATERIALS | 2015年 / 8卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Scapharca broughtonii shell; crossed-lamellar structure; three-point bending; strength; fracture; GIGAS CONCH SHELL; STROMBUS-GIGAS; MECHANICAL-PROPERTIES; MICROSTRUCTURE; TOUGHNESS; CERAMICS; DESIGN;

D O I：

10.3390/ma8095298

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

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.

引用

页码：6154 / 6162

页数：9