储罐底板缺陷检测系统中侧面接触换能器的超声导波激励
Excitation of Guided Waves in Oil Storage Tank Floor by Edge-Mounted Transducers
摘 要
通过动态光弹系统，观察并分析了侧壁激励时，超声导波在板中的传播行为。分析了侧壁纵波激励时产生Lamb波和串列纵波的转换条件和原因，超声导波在传播过程中发生的波前能量衰减，以及各波列之间的能量传递。通过光弹试验以及对比检测试验，证明了在大尺度板材检测方面，采用较高频率纵波探头侧壁激励进行检测是一种可行的方法。
光弹
储罐底板
兰姆波
Ultrasonic guided wave
Photo-elastic
Storage tank floor
Lamb wave
Abstract
The behavior of ultrasonic wave propagating along plate structures using edge-mounted transducer by dynamic photo-elastic method was presented. The conversion conditions and reasons of series of longitudinal waves and the generation of Lamb wave were also presented. The wave front energy attenuation and the energy transportation between each wave series while the wave being propagating along the plate were revealed also. Through photo-elastic experiment and the comparison test, the employment of higher frequency(2 MHz) longitudinal edge-mounted transducer was verified to be a viable option for large plate structure defect inspection.
中图分类号 TG115.28
所属栏目 试验研究
基金项目
收稿日期 2010/4/19
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备注冯展军(1977-)，男，工程师，博士，主要从事油气储运行业的无损检测技术研究。
引用该论文: FENG Zhan-Jun,WANG Wei-Bin,WANG Yu-Qin,YUAN Ke-Yi,HAN Zan-Dong,CHEN Yi-Fang. Excitation of Guided Waves in Oil Storage Tank Floor by Edge-Mounted Transducers[J]. Nondestructive Testing, 2011, 33(4): 36～38
冯展军,王维斌,王禹钦,林明春,原可义,韩赞东,陈以方. 储罐底板缺陷检测系统中侧面接触换能器的超声导波激励[J]. 无损检测, 2011, 33(4): 36～38
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参考文献
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【2】徐彦廷，刘富君，王亚东，等.大型立式储罐综合检测技术[J].无损检测,2007,29(8):482-485.
【3】Greve D W, Zheng P, Oppenheim I J. Excitation of longitudinal and Lamb waves in plates by edge-mounted transducers[C]. New York: Proc IEEE Ultrasonics Conference,2007:1-4.
【4】Sicard R, Goyette J, Zellouf D. A SAFT algorithm for Lamb wave imaging of isotropic plate-like structures[J]. Ultrasonics,2002,39(7):487-494.
【5】Giurgiutiu V. Lamb wave generation with piezoelectric wafer active sensors for structural health monitoring[C]. Proceedings of the SPIE Smart Structures and Materials 2003: Smart Structures and Integrated Systems,2003,5056:111-122.
【6】Lowe M J S, Diligent O. Low-frequency reflection characteristics of the S0 Lamb wave from a rectangular notch in a plate[J]. J Acoust Soc Am,2002,111(1):64-74.
【2】徐彦廷，刘富君，王亚东，等.大型立式储罐综合检测技术[J].无损检测,2007,29(8):482-485.
【3】Greve D W, Zheng P, Oppenheim I J. Excitation of longitudinal and Lamb waves in plates by edge-mounted transducers[C]. New York: Proc IEEE Ultrasonics Conference,2007:1-4.
【4】Sicard R, Goyette J, Zellouf D. A SAFT algorithm for Lamb wave imaging of isotropic plate-like structures[J]. Ultrasonics,2002,39(7):487-494.
【5】Giurgiutiu V. Lamb wave generation with piezoelectric wafer active sensors for structural health monitoring[C]. Proceedings of the SPIE Smart Structures and Materials 2003: Smart Structures and Integrated Systems,2003,5056:111-122.
【6】Lowe M J S, Diligent O. Low-frequency reflection characteristics of the S0 Lamb wave from a rectangular notch in a plate[J]. J Acoust Soc Am,2002,111(1):64-74.
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