Correlation between aspect ratio of MWCNTs and mixed mode fracture of epoxy based nanocomposites

被引：13
作者：
Ayatollahi, M. R. [1 ]
Shadlou, S. [1 ]
Shokrieh, M. M. [2 ]
机构：
[1] Iran Univ Sci & Technol, Fatigue & Fracture Res Lab, Ctr Excellence Expt Solid Mech & Dynam, Sch Mech Engn, Tehran 1684613114, Iran
[2] Iran Univ Sci & Technol, Composites Res Lab, Ctr Excellence Expt Solid Mech & Dynam, Sch Mech Engn, Tehran 1684613114, Iran
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2011年 / 528卷 / 19-20期
关键词：
MWCNT diameter; Epoxy; Nanocomposite; Mixed mode loading; Fracture toughness; WALLED CARBON NANOTUBES; MECHANICAL-PROPERTIES; COMPOSITES; ENHANCEMENT; TOUGHNESS; BEHAVIOR; RESIN; PMMA;
D O I：
10.1016/j.msea.2011.04.082
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The effects of multi-walled carbon nanotube (MWCNT) diameter on fracture behavior of epoxy based nanocomposites under mixed mode I/II loading were investigated. Four types of MWCNTs with different diameters were used. It was found that the aspect ratio of filler has huge impact on the fracture behavior of nanocomposite. Regardless of their dimensions, MWCNTs were discovered to be more effective under shear loading conditions rather than normal loading conditions. The fracture surfaces of all specimens were studied and the observed features were explained based on the possible fracture mechanisms. Finally, the experimentally obtained fracture loads were compared with the theoretical estimates of three fracture criteria. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：6173 / 6178
页数：6
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