管道中T(0,1)模态导波检测技术的发展与应用现状  

Development and application status of T(0,1) modal guided wave detection technology in pipeline

作　　者：赵满全[1] 栗霞飞 刘飞[1] 刘晓东 杜兰 ZHAO Man-quan;LI Xia-fei;LIU Fei;LIU Xiao-dong;DU Lan(College of Mechanical and Electrical Engineering,Inner Mongolia Agricultural University,Hohhot 010018,Neimenggu,China)

机构地区：[1]内蒙古农业大学机电工程学院

出　　处：《声学技术》2019年第6期632-639,共8页Technical Acoustics

基　　金：国家自然科学基金项目(11662013)

摘　　要：超声导波具有检测速度快、检测范围广等优点,被广泛应用于各类缺陷的检测。而扭转模态作为超声导波的一种对称模态,具有频散小、能量集中、信号单一且易于分析的特点。综述了近年来扭转模态的发展历程,从T(0,1)扭转导波的传播与检测原理入手,对比各类激励探头的激励原理与效果,并对其进行优缺点分析。通过分析导波模态的选取原则和导波在单层管道、双层管道和充液管道中传播的性质,总结激励频率、液体粘度、液体密度等因素对扭转模态导波在管道中传播的影响,进而明确扭转模态的适用范围及适用的信号处理方法,对于今后扭转模态的发展具有借鉴意义。The ultrasonic guided wave detection technology has the advantages of fast detection speed and wide detection range,and so it has been widely used in pipeline defect detection.The torsional mode,as a symmetric mode of ultrasonic guided wave,is characterized by small dispersion,concentrated energy,single signal and easy to analysis.In this paper,the development of torsional modes in recent years is reviewed.Starting from the propagation and detection principles of torsional guided waves in T(0,1)mode,the excitation principles and effects of various excitation probes are compared,and their advantages and disadvantages are analyzed.By analyzing the selection principle of torsional modes and the characteristics of the guided wave propagation in a single pipe,double wall pipe and liquid filled pipe,the effects of excitation frequency,liquid viscosity,liquid density and other factors on the propagation of torsional mode guided wave in the pipeline are summarized.Furthermore,the suitable scope of torsional mode and the suitable signal processing method are defined,which could provide a reference for the development of torsional mode detection technology in the future.

关 键 词：超声导波 T(0 1) 模态 激励信号 

分 类 号：TB559[理学—物理]