面向超声导波检测的管道腐蚀建模及仿真实现  

Pipeline corrosion modeling and simulation for guided-waves-based inspection

作　　者：王晓娟 杨帆[1] 王错 赵锴[1] 郑毅[1] Wang Xiaojuan;Yang Fan;Wang Cuo;Zhao Kai;Zheng Yi(School of Mechanical and Precision Instrument Engineering,Xi′an University of Technology,Xi′an 710048,China)

机构地区：[1]西安理工大学机械与精密仪器工程学院,西安710048

出　　处：《仪器仪表学报》2023年第5期71-80,共10页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金(51505374)项目资助。

摘　　要：超声导波技术被大量应用于管道腐蚀的检测与评估。腐蚀是实际管道中的主要缺陷形式,管道腐蚀缺陷形貌多样且复杂,针对管道腐蚀导波检测的很多研究是通过仿真手段开展的。常用的缺陷简化模型不能充分反映实际腐蚀缺陷的复杂程度,有可能造成分析结果的偏差。本文在分析腐蚀特点基础上提出了基于W-M分形函数的腐蚀仿真模型,研究了管道腐蚀缺陷的有限元自动建模仿真方法,并通过分析讨论超声导波检测不同腐蚀缺陷的仿真结果对模型的有效性进行了验证,结果证明基于本文提出的腐蚀模型所得缺陷回波可提供更丰富的缺陷信息,有利于揭示管道腐蚀特征与导波信号之间的量化关系。本文的研究成果可为进一步分析管道腐蚀缺陷的检测评估建立理论基础。The ultrasonic guided-wave technique is widely used in the inspection and evaluation of pipeline defects.The defects in pipeline are mainly corrosion defects,and the actual form of pipeline corrosion is diverse and complex.A large number of researches for pipeline corrosion waveguide detection are conducted by means of simulation.The common simplified defect models cannot fully present the complexity of the actual corrosions and the mistakes may be made when analyzing the signals with them.The work in this article proposes a corrosion defect simulation model based on W-M fractal function,and further studies the finite element modeling of the pipeline with corrosion for guided waves inspection.The model is evaluated by simulation results of inspecting different corrosion defects.Results show that the obtained reflections can provide more defect information,which are conducive to reveal the quantitative relationship between the characteristics of pipeline corrosion and the guided-waves signal.Research results of this work are expected to provide theoretical support for further research on the detection and evaluation of corrosion defects in pipeline.

关 键 词：超声导波 管道腐蚀 仿真建模 W-M分形函数 

分 类 号：TH70[机械工程—仪器科学与技术]