Studies on the relationship between acoustic emission characteristics and fracture toughness of materials

被引：4

作者：

Zhu, B ^{[1
]}

Cai, X

Wang, CG

Cai, HS

机构：

[1] Shandong Univ, Sch Mat Sci & Engn, Jinan 250061, Peoples R China

[2] Shandong Univ, Sch Comp Sci & Technol, Jinan 250014, Peoples R China

来源：

ACTA PHYSICA SINICA | 2003年 / 52卷 / 08期

关键词：

acoustic emission; tracture toughness; aluminium alloy;

D O I：

10.7498/aps.52.1960

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The correlation between acoustic emission characteristics and their fracture has been investigated in this paper based on the study of high-strength aluminum alloy cracking process by using advanced acoustic emission experience system and smooth tensile specimens as well as DCB specimens with premade cracks. Experimental results showed that the specimens emitted strong signals with an amplitude above 35 dB when a stable crack extension, and the cumulative energy of acoustic emission events were found during unstable crack extension, and the cumulative energy of acoustic emission events were found to be linearly related with the macroscopic fracture energy.

引用

页码：1960 / 1964

页数：5