压力容器声发射检测中常见非缺陷信号分析
Several False Defect Signals in Acoustic Emission Testing of Pressure Vessels
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。
噪声分析
非缺陷信号
频谱分析
Acoustic emission testing
Noise analysis
False defect signal
Frequency analysis
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.
中图分类号 TG115.28
所属栏目 2008远东无损检测新技术论坛优秀论文选登
基金项目
收稿日期 2008/6/25
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备注孙雷(1973-)，男，学士，工程师，主要从事压力容器、压力管道的定期检验。
引用该论文: 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): 550～552
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): 550～552
被引情况:
【1】田亚团,蒋仕良,李杰,李东, "声发射技术在高噪声背景下的检测应用",无损检测 35, 32-35(2013)
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参考文献
【1】GB/T 18182—2000金属压力容器声发射检测及结果评价方法\[S\].
【2】ASME Ⅴ-12—1998Acoustic Emission Examination of Metallic Vessels During Pressure Testing\[S\].
【3】ASTM E1139—1997Standard Practice for Continuous Monitoring of Acoustic Emission from Metal Pressure Boundaries\[S\].
【4】沈功田,李金海.压力容器无损检测——声发射检测技术\[J\].无损检测,2004,26(9):457-463.
【2】ASME Ⅴ-12—1998Acoustic Emission Examination of Metallic Vessels During Pressure Testing\[S\].
【3】ASTM E1139—1997Standard Practice for Continuous Monitoring of Acoustic Emission from Metal Pressure Boundaries\[S\].
【4】沈功田,李金海.压力容器无损检测——声发射检测技术\[J\].无损检测,2004,26(9):457-463.
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