Damage Pattern Recognition and Feature Extraction of MgO-C Refractory

被引：3

作者：

Liu, Changming ^{[1
]}

Wang, Zhigang ^{[1
]}

Li, Yourong ^{[1
]}

机构：

[1] Wuhan Univ Sci & Technol, Minist Educ, Key Lab Met Equipment & Control Technol, Wuhan 430081, Peoples R China

来源：

ISIJ INTERNATIONAL | 2013年 / 53卷 / 07期

基金：

中国国家自然科学基金; 高等学校博士学科点专项科研基金;

关键词：

refractory; damage; pattern recognition; AE; centroid energy; ACOUSTIC-EMISSION SIGNALS; HIGH-TEMPERATURE; WAVELET TRANSFORM; BEHAVIOR; MECHANISMS; FAILURE;

D O I：

10.2355/isijinternational.53.1280

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The determination of the damage mode and the quantitative description of the damage of the refractory are the subjects of this paper. Through the three-point bending tests, a magnesia-carbon refractory has been investigated using an Acoustic Emission (AE) unsupervised pattern recognition procedure and a frequency-energy coupled analysis. By means of coefficient analysis of the wavelet energy spectrum, the damage is divided into three periods. Based on the periods, time-frequency analysis is used to extract the damage characteristics and the centroid energy carried by the centroid frequency is put forward in the explanation of the extent of the damage. Finally, the time history plot of the centroid frequency is produced. It shows the similarity of that of the energy which indicates that the extent of the damage could be explained by the centroid energy carried by the centroid frequency brought forward.

引用

页码：1280 / 1285

页数：6

共 23 条

[1]

Ativitavas N., 2004, Proc. of European WG on AE, V5, P447

[2] ON THE USE OF ACOUSTIC-EMISSION TO INVESTIGATE DAMAGE MECHANISMS IN GLASS-FIBER-REINFORCED POLYPROPYLENE [J].