基于超声导波埋地层状管道结构健康监测
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摘要
本文以超声导波在层状管道结构传播规律研究为基础,对基于超声导波在埋地层状管道结构健康监测进行研究。首先,以Navier-Stokes方程为基础,结合势函数中和一个附加的位移场方程,引入具有渐进性的Hankel函数,联立边界条件,建立频散方程。研究频散方程的数值解,绘制频散曲线。根据频散曲线性质选择用于监测的导波模态和频率,建立试验系统。由于超声导波在埋地层状管道结构中传播是能量逐渐衰减的过程,采用能量法能够对结构中能量消散有更清晰的认识,以能量密度为参量,对理论和试验进行验证,结果表明,一定频段和模态的超声导波对浅层埋地层状管道结构健康监测能够清晰实现。
Based on the propagation characteristic of ultrasonic guided waves in the layered pipeline structure,the paper made a research on structural health monitoring( SHM) of ultrasonic guided waves in underground layered pipeline. Firstly,dispersion equation is established on Hankel function,boundary condition and additional displacement field equation in the potential function based on the Navier-Stokes equation. The numerical solutions of dispersion equation are obtained,and dispersion curves are drawn. Then the suitable excitation frequency of ultrasonic guided waves is chosen. The experimental system is established to verify the theoretical research. Since ultrasonic guided waves propagation in the underground layered pipeline structure is a process of energy attenuation,the energy attenuation characteristic is clear acquainted with the method of energy density. The method of energy density is useful to SHM. The research result shows that SHM for the underground layered pipeline can be accomplished by using ultrasonic guided waves in the range of frequency and mode.
Based on the propagation characteristic of ultrasonic guided waves in the layered pipeline structure,the paper made a research on structural health monitoring( SHM) of ultrasonic guided waves in underground layered pipeline. Firstly,dispersion equation is established on Hankel function,boundary condition and additional displacement field equation in the potential function based on the Navier-Stokes equation. The numerical solutions of dispersion equation are obtained,and dispersion curves are drawn. Then the suitable excitation frequency of ultrasonic guided waves is chosen. The experimental system is established to verify the theoretical research. Since ultrasonic guided waves propagation in the underground layered pipeline structure is a process of energy attenuation,the energy attenuation characteristic is clear acquainted with the method of energy density. The method of energy density is useful to SHM. The research result shows that SHM for the underground layered pipeline can be accomplished by using ultrasonic guided waves in the range of frequency and mode.
引文
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[5]刘增华,何存富,王秀彦,等.带粘弹性包覆层充液管道中的超声导波缺陷检测研究[J].机械科学与技术,2007,26(6),687-691.
[6] Yan Shi,Li Ying,Zhang Shuai,et al. Pipeline damage detection using piezoceramic transducers:Numerical analyses with experimental validation[J]. Sensors,2018,18(7),2106.
[7] Gazis D C. Exact analysis of the plane-strain vibrations of thick-walled hollow cylinders[J]. The Journal of the Acoustical Society of America,2005,30(8):786-794.
[8] Hanifah A. Theoretical Evaluation of Deep Foundation Using Guided Wave Approach[D]. Evanston,Illinois:Northwestern University,1999.
[9] Finno R J,Popovics J S,Hanifah A A,et al. Guided wave interpretation of surface reflection techniques for deep foundations[J]. Zhetf Pisma Redaktsiiu,2001,53(10):489.
[10] Chao H. An Experimental Model for Non-destructive Evaluation on Pile Foundations Using Guided Wave Approach[D]. Evanston,Illinois:Northwestern University,2002.
[11]赵乃志.利用压电超声导波时间反转法的管道结构裂纹监测研究[D].大连:大连理工大学,2013.
[12]阎石,何彬彬,赵乃志.管结构导波频散曲线绘制与试验验证[J].工程力学,2012,29(s2):159-163.
[13]杨永波.空心圆柱结构及板型结构中的导波检测理论研究[D].武汉:中国科学院武汉岩土力学研究所,2009.
[14] Auld B A. Acoustic Fields and Waves in Solids(VolumeⅡ)[M]. John Wiley&Sons,1973.
[15]于保华,杨世锡,甘春标.一种多层圆管纵向导波频散特性分析方法研究[J].工程力学,2013,30(4):373-379.
[2] Silk M G,Bainton K P. The propagation in metal tubing of ultrasonic wave modes equivalent to Lamb waves[J]. Ultrasonics,1979,17(1):11-19.
[3] Elvira-segura L. Acoustic wave dispersion in a cylindrical elastic tube filled with a viscous liquid[J]. Ultrasonics,2000,37(8):537-547.
[4] Barshinzer J N,Rose J L. Guided wave propagation in an elastic hollow cylinder coated with a viscoelastic material[J]. IEEE Transactions on Ultrasonics,Ferroelectrics,and Frequency Control,2004,50(11):1547-1556.
[5]刘增华,何存富,王秀彦,等.带粘弹性包覆层充液管道中的超声导波缺陷检测研究[J].机械科学与技术,2007,26(6),687-691.
[6] Yan Shi,Li Ying,Zhang Shuai,et al. Pipeline damage detection using piezoceramic transducers:Numerical analyses with experimental validation[J]. Sensors,2018,18(7),2106.
[7] Gazis D C. Exact analysis of the plane-strain vibrations of thick-walled hollow cylinders[J]. The Journal of the Acoustical Society of America,2005,30(8):786-794.
[8] Hanifah A. Theoretical Evaluation of Deep Foundation Using Guided Wave Approach[D]. Evanston,Illinois:Northwestern University,1999.
[9] Finno R J,Popovics J S,Hanifah A A,et al. Guided wave interpretation of surface reflection techniques for deep foundations[J]. Zhetf Pisma Redaktsiiu,2001,53(10):489.
[10] Chao H. An Experimental Model for Non-destructive Evaluation on Pile Foundations Using Guided Wave Approach[D]. Evanston,Illinois:Northwestern University,2002.
[11]赵乃志.利用压电超声导波时间反转法的管道结构裂纹监测研究[D].大连:大连理工大学,2013.
[12]阎石,何彬彬,赵乃志.管结构导波频散曲线绘制与试验验证[J].工程力学,2012,29(s2):159-163.
[13]杨永波.空心圆柱结构及板型结构中的导波检测理论研究[D].武汉:中国科学院武汉岩土力学研究所,2009.
[14] Auld B A. Acoustic Fields and Waves in Solids(VolumeⅡ)[M]. John Wiley&Sons,1973.
[15]于保华,杨世锡,甘春标.一种多层圆管纵向导波频散特性分析方法研究[J].工程力学,2013,30(4):373-379.