摘要
为正确评析管道弯头用超声导波检出的缺陷,避免错漏评,用数值仿真拟定两种补偿修正法。对人工缺陷轴向和周向仿真测评值与实验测评值一一作了比照,发现两者基本一致。此补偿修正法对弯头缺陷导波检测有效评定有一定实用价值。
This article describes the two compensation methods established by numerical simulation in order to correctly evaluate defects at pipe elbows detected by guided wave testing and avoid misjudging the seriousness of defects.Comparing the measurement data obtained by simulation and experiment for artificial flaws in axial and circumferential positions,agood correlation between them could be confirmed.So,this compensation method is valuable for effective evaluation of pipe elbow defects by guided wave testing.
作者
李衍
LI Yan(NDT Subcommittee of Wuxi Pressure Equipment Society,Wuxi 214026,China)
出处
《无损探伤》
2019年第3期1-5,10,共6页
Nondestructive Testing Technology
关键词
超声导波
管道弯头
缺陷评析
仿真建模
补偿系数
Guided wave
Pipe elbow
Defect evaluation
Simulation
Compensation coefficient
