摘要
为了研究304不锈钢的点蚀声发射信号特性,应用小波变换和模态声发射技术对304不锈钢的点蚀声发射信号进行了分析,分析研究结果表明,点蚀信号波形主要是由能量较大的低频段弯曲波和能量较小的高频段扩展波构成的。研究结果对304不锈钢点蚀声发射监测具有一定的实际指导意义。
In order to study acoustic emission （AE） signals waveform characteristics of pitting corrosion on 304 stainless steel, wavelet transform and mode acoustic emission technology were combined to deal with recorded AE signals. The results showed that signal waveform was mainly composed of low-frequency flexural wave with larger energy and high-frequency expansion wave with lesser energy. The research results have some certain significance for AE monitoring of pitting corrosion on 304 stainless steel.
出处
《石油化工设备》
CAS
2013年第6期21-24,共4页
Petro-Chemical Equipment
关键词
304不锈钢
点蚀
小波变换
模态声发射
信号特性
304 stainless steel
pitting corrosion
wavelet transform
mode acoustic emission
signals characteristics
