Failure Mechanism of Brass with Three V-Notches Characterized by Acoustic Emission in In Situ Three-Point Bending Tests

被引：8

作者：

Hou, Pengliang ^{[1
]}

Fan, Zunqiang ^{[1
]}

Zhang, Lin ^{[2
]}

Zhai, Xiangguo ^{[1
]}

Zhang, Shizhong ^{[1
]}

Li, Cong ^{[1
]}

Du, Yumeng ^{[1
]}

Zhao, Hongwei ^{[1
]}

机构：

[1] Jilin Univ, Sch Mech Sci & Engn, Changchun 130025, Peoples R China

[2] Ohio State Univ, Dept Integrated Syst Engn, Columbus, OH 43210 USA

来源：

ADVANCED ENGINEERING MATERIALS | 2016年 / 18卷 / 12期

基金：

中国国家自然科学基金;

关键词：

STRESS INTENSITY FACTORS; SMALL-ANGLE SCATTERING; POLYMER COMPOSITES; FRACTURE MODE; FLAT PLATES; FATIGUE; ENERGY; DEFORMATION; EXPRESSIONS; LOCATION;

D O I：

10.1002/adem.201500599

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The purpose of this study is to characterize the V pre-notched specimens with different relative depth ratio and the relative distance ratio by the AE signals in in situ three-point bending tests. Simultaneously, during the bending process, the V pre-notched specimen is in situ monitored by the opto-digital microscope. In order to analyze the depth of V-notch and the distance between the side V-notches and the middle V-notch effect on the specimens, a finite element analysis model is built by ABAQUS. Combining the in situ images, the AE signals and the finite element analysis (FEA) results, it is found that the experiment results are consistent with the FEA results. It is demonstrated that the amplitude of AE signals can effectively characterize the crack initiation, crack growth, and crack fast instability fracture.

引用

页码：2047 / 2056

页数：10

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