Research on Acoustic Emission Signals Characteristics of Pitting Corrosion on 304 Stainless Steel

被引：0

作者：

Zhang, Zhongzheng ^{[1
]}

Liang, Hua ^{[1
]}

Ye, Cheng ^{[1
]}

Cai, Wensheng ^{[1
]}

Jiang, Jun ^{[1
]}

Cui, Qiang ^{[1
]}

机构：

[1] Nanjing Boiler Pressure Vessel Supervis & Inspect, Nanjing, Jiangsu, Peoples R China

来源：

PROCEEDINGS OF THE ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2013, VOL 1B: CODES AND STANDARDS | 2014年

关键词：

304 stainless steel; pitting corrosion; acoustic emission; higher than normal temperature;

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In order to study acoustic emission (AE) signals waveform characteristics of pitting corrosion on 304 stainless steel under higher temperature than lower one, Pitting corrosion process on 304 stainless steel in 6% ferric chloride solution at 70 degrees C was monitored by AE technology. Wavelet transform and mode acoustic emission technology were combined to deal with recorded AE signals, and micromorphologic observation was performed for further verification. The results showed that signal waveform was mainly composed of low-frequency (<100KHz) flexural wave with larger amplitude & energy and high-frequency (>100KHz) expansion wave with lesser amplitude & energy. The research results have some certain significance for AE monitoring of pitting corrosion on 304 stainless steel.

引用

页数：8

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