| 压力容器声发射检测中常见非缺陷信号分析 |
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| 引用本文： | 孙雷,沈建民,毛国均,王小华.压力容器声发射检测中常见非缺陷信号分析[J].无损检测,2008,30(8). |
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| 作者姓名： | 孙雷 沈建民 毛国均 王小华 |
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| 作者单位： | 宁波市特种设备检验检测中心,宁波,315020 |
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| 摘 要： | 介绍了压力容器声发射检测中常见的机械振动、电磁干扰、氧化皮开裂脱落、鞍座垫板摩擦等非缺陷定位信号的特征。频谱分析发现机械噪声、氧化皮和摩擦的声发射信号频率逐渐增加,电磁噪声信号频率较高。因此可通过频率特征区分这些信号。
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| 关 键 词： | 声发射检测 噪声分析 非缺陷信号 频谱分析 |
Several False Defect Signals in Acoustic Emission Testing of Pressure Vessels |
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| SUN Lei,SHEN Jian-Min,MAO Guo-Jun,WANG Xiao-Hua.Several False Defect Signals in Acoustic Emission Testing of Pressure Vessels[J].Nondestructive Testing,2008,30(8). |
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| Authors: | SUN Lei SHEN Jian-Min MAO Guo-Jun WANG Xiao-Hua |
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| Affiliation: | SUN Lei; SHEN Jian-Min; MAO Guo-Jun; WANG Xiao-Hua(Ningbo Special Equipment Inspection Center; Ningbo 315020; China); |
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| Abstract: | Several false defect signals in acoustic emission of pressure vessel like the vibration noise, electromagnetic noise, corrode outcome splitting and the friction between backing board were introduced. Frequency analysis of these signals was conducted. So the signals could be distinguished by frequency. |
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| Keywords: | Acoustic emission testing Noise analysis False defect signal Frequency analysis |
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