薄板结构中Lamb波的检测与仿真
Detection and Simulation of the Lamb Wave in Thin Plate Structure
摘 要
利用MARC有限元软件，按不同模式波结构分布在有限元模型上进行位移加载，得到了单一的A0，S0模式。同时，模拟了A0，S0模式在2 mm薄板中的传播过程，绘制了缺陷回波反射系数与缺陷尺寸的关系图，并对模拟结果进行了试验验证。试验结果表明：采用波结构位移加载方式能够激励出单一模式Lamb波，结合有限元方法识别缺陷尺寸具有可行性，且不同振型模式波对缺陷尺寸敏感程度不同，其A0模式对缺陷尺寸敏感，而S0模式难以识别缺陷尺寸。
数值模拟
薄板
无损检测
Lamb wave
Numerical simulation
Thin plate
Nondestructive testing
Abstract
MARC finite element software was used to obtain the single mode A0 and S0, which was achieved by loading displacement based on the distribution of different mode wave structures in finite element model. In addition, the propagation process of A0 and S0 mode wave in 2mm sheet was simulated, and the diagram between the reflection coefficient of defect echo and defect size was also drawn. And then, the simulation results were verified by the practical experiment. The results showed that the excitation of single mode Lamb wave could be achieved by the displacement loading of wave structure. It was feasible to estimate the defect size combined with finite element method. The sensitive degree of different vibration modal on defect size was different. The A0 mode was sensitive on defect size, whereas the defect size was unable to be identified by S0 mode.
中图分类号 TG115.28
所属栏目 试验研究
基金项目 国家自然科学基金资助项目(51175113,51105033)；国际合作基金资助项目(2007DFR70070)
收稿日期 2012/11/1
修改稿日期
网络出版日期
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备注刚铁(1952-)，男，博士生导师，教授，先进焊接与连接国家重点实验室主任，主要从事焊接无损检测与评价领域前沿问题的研究。
引用该论文: GANG Tie,LIU Qiang. Detection and Simulation of the Lamb Wave in Thin Plate Structure[J]. Nondestructive Testing, 2013, 35(7): 24～28
刚铁,刘强. 薄板结构中Lamb波的检测与仿真[J]. 无损检测, 2013, 35(7): 24～28
被引情况:
【1】王贝,窦晓兰,韩晓华, "表面波检测的数值模拟与试验对比",无损检测 36, 44-48(2014)
【2】智达,赵军辉,许烨东,魏勤, "超声S0导波检测腐蚀缺陷",无损检测 37, 16-21(2015)
【3】王贝,窦晓兰,韩晓华, "表面波检测的数值模拟与试验对比",无损检测 36, 44-48(2014)
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参考文献
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【3】周正干,冯海伟. 超声导波检测技术的研究进展［J］.无损检测,2006,28(2):57-63.
【4】ROSE J L. Guided wave nuances for ultrasonic nondestructive evaluation［J］. Ultrasonics, Ferroelectrics and Frequency Control, IEEE Transactions on,2000,47(3)：575-583.
【5】BARTOLI I, DISCALEA F L, FATEH M, et al. Modeling guided wave propagation with application to the long-range defect detection in railroad tracks［J］. NDT & E International,2005,38(5)：325-334.
【6】KAZYSR, MAZEIKA L, BARAUSKAS R, et al. 3D analysis of interaction of Lamb waves with defects in loaded steel plates［J］. Ultrasonics,2006,44 (Suppl 1)： 1127-1130.
【7】KE W, CASTAINGS M, BACON C. 3D finite element simulations of an air-coupled ultrasonic NDT system［J］. NDT & E International,2009,42(6)：524-533.
【8】吴斌，周伟，郑阳，等.基于波结构的Lamb波单一模态激励仿真［J］.无损检测,2011,33(7):1-4.
【9】刘锋，王鑫伟.Lamb波在复合材料板中传播的谱有限元建模和仿真［J］.复合材料学报,2011(5):174-180.
【10】ROSE JOSEPH L.固体中的超声波［M］.北京：科学出版社,2004:171.
【11】孔双庆.管道超声导波检测的数值模拟和实验研究［D］.大连:大连理工大学,2011.
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