Crack Resistance Behavior Using Digital Image Correlation and Crack Tip Opening Angle on Particulate Reinforced Composite

被引：4
|
作者：
Na, Seong Hyeon [1 ]
Lee, Jeong Won [1 ]
Kim, Jae Hoon [1 ]
机构：
[1] Chungnam Natl Univ, Dept Mech Engn, Daejeon, South Korea
来源：
TRANSACTIONS OF THE KOREAN SOCIETY OF MECHANICAL ENGINEERS A | 2016年 / 40卷 / 12期
关键词：
Digital Image Correlation; Crack Tip Opening Angle; Particulate Reinforced Composite; Wedge Splitting Test;
D O I：
10.3795/KSME-A.2016.40.12.1021
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In this study, crack resistance is evaluated by the crack tip opening angle (CTOA) using a wedge splitting test (WST)on a viscoelastic particulate reinforced composite based on an HTPB binder. Generally, CTOA, as a function of crack extension, is used in order to determinate fracture resistance and has a steady state relative angle. Digital image correlation (DIC) is used to measure the crack tip opening displacement (CTOD) and crack extension for the critical crack tip opening angle (CTOAc). In these results, the CTOAc value of a particulate reinforced composite tends to approach a constant angle after a small amount of crack extension. The CTOAc value increases with decreasing temperature, from 50 degrees C to -40 degrees C. These CTOAc values may be used to measure fracture mechanics parameters for particulate reinforced composite.
引用
收藏
页码：1021 / 1026
页数：6
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