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| 采用聚焦Lamb波方法的板结构螺钉松动监测 | |
| 引用本文： | 王强,袁慎芳,田峰,江兵. 采用聚焦Lamb波方法的板结构螺钉松动监测[J]. 压电与声光, 2012, 34(1): 73-75 |
| 作者姓名： | 王强 袁慎芳 田峰 江兵 |
| 作者单位： | 1. 南京邮电大学自动化学院,江苏南京,210046 2. 南京航空航天大学智能材料与结构航空科技重点实验室,江苏南京,210016 3. 南京邮电大学通信与信息工程学院,江苏南京,210046 |
| 基金项目： | 国家自然科学基金资助项目，江苏省高校自然科学基金资助项目，南京邮电大学引进人才科研启动基金资助项目 |
| 摘 要： | 针对基于压电元件和主动Lamb波的螺钉松动监测研究中存在的问题,研究采用聚焦Lamb波信号方法改进现有监测技术。介绍和分析了基于时间反转处理的Lamb波信号聚焦原理和过程,以及基于此的螺钉松动监测特征参数提取以及方法的实现技术;通过在铝板盒段试件上的实验,给出了实验验证,证明了该方法具有较好的实用性。 |
| 关 键 词： | 结构故障监测 螺钉松动 时间反转聚焦 盒段 Lamb波 |
Study on Structural Bolt Debonding Monitoring Based on Focused Lamb Waves |
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| WANG Qiang,YUAN Shenfang,TIAN Feng and JIANG Bin. Study on Structural Bolt Debonding Monitoring Based on Focused Lamb Waves[J]. Piezoelectrics & Acoustooptics, 2012, 34(1): 73-75 | |
| Authors: | WANG Qiang YUAN Shenfang TIAN Feng JIANG Bin |
| Affiliation: | WANG Qiang1,YUAN Shenfang2,TIAN Feng3,JIANG Bin1(1.College of Automation,Nanjing University of Post & Telecommunications,Nanjing 210046,China; 2.The Aeronautic Key Lab.for Smart Material and Structure,Nanjing University of Aeronautic and Astronautic,Nanjing 210016,China; 3.College of Telecommunication and Information Engineering,Nanjing University of Post & Telecommunications,Nanjing 210046,China) |
| Abstract: | Aiming to the problems in the bolt debonding monitoring based on PZT and active Lamb wave,this paper presented the improved monitoring method based on focused Lamb waves.The principle and procedure of the Lamb waves focalization by time-reversal process.Improved bolt debonding monitoring method and its application technique are analyzed.The effect and practicability of the new method were demonstrated in experiments in which the joints of a test box with aluminum board were monitoring. |
| Keywords: | structure damage monitoring bolt debonding time-reversal focalization test box Lamb waves |
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