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张 虹,靳世久,孙立瑛
(天津大学精密测试技术及仪器国家重点实验室,天津 300072)
摘要:分析了引起声发射信号衰减的各种原因,采用美国PAC公司的声发射仪,对一个复杂特征管道中声发射信号的幅度衰减情况进行了试验测量,得出了不同管道特征对声发射信号幅度的衰减影响的结论,并提出相关的建议?
关键词:声发射;检测;管道;幅度衰减
Amplitude Attenuation of Acoustic Emission from Different Pipeline Characteristics
ZHANG Hong,JIN Shi-jiu,SUN Li-ying
(State Key Laboratory of Precision Measurement Technology and Instruments, Tianjin University , Tianjin 300072, China)
Abstract:This article analyzed different reason for the amplitude attenuation of the acoustic emission,and used the AE testing device produced by PAC America to test the acoustic emission attenuation using a pipe with many complex features.Then it draw a conclusions that different pipes feature weaken the acoustic emission signal in different ways. At last,some relevant recommendations were put forward.
Key words:AE(Acoustic Emission);detect;pipe;amplitude attenuation |
