| 基于小波变换和模态声发射的304不锈钢点蚀声发射信号特性 |
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| 引用本文： | 蔡文生. 基于小波变换和模态声发射的304不锈钢点蚀声发射信号特性[J]. 石油化工设备, 2013, 0(6): 21-24 |
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| 作者姓名： | 蔡文生 |
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| 作者单位： | 南京市锅炉压力容器检验研究院,江苏南京210002 |
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| 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。
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| 关 键 词： | 304不锈钢 点蚀 小波变换 模态声发射 信号特性 |
Research on Acoustic Emission Signals Characteristics of Pitting Corrosion on 304 Stainless Steel Based on Wavelet Transform and Mode Acoustic Emission |
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| CAI Wen-sheng. Research on Acoustic Emission Signals Characteristics of Pitting Corrosion on 304 Stainless Steel Based on Wavelet Transform and Mode Acoustic Emission[J]. Petro-Chemical Equipment, 2013, 0(6): 21-24 |
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| Authors: | CAI Wen-sheng |
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| Affiliation: | CAI Wen-sheng (Nanjing Boiler ＆ Pressure Vessel Supervision and Inspection Research Institude, Nanjing 210002, China) |
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| Abstract: | 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. |
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| Keywords: | 304 stainless steel pitting corrosion wavelet transform mode acoustic emission signals characteristics |
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