Development of the measurement system of leaky Lamb waves dispersion curves based on LabVIEW

摘要：

In this paper, an automatic measurement system of leaky Lamb waves dispersion curves based on LabVIEW is developed. In this system, the PVDF line-focus transducer is controlled to defocus through the movement of the linear stage, and the NI PXI-5154 digitizer is controlled to acquire echo signals, then the calculation program is called to process the echo signals for calculating phase velocities of measured leaky Lamb wave modes. Two stainless steel samples of 5 mm and 0.5 mm in thickness are experimentally tested by using this developed system. Up to five modes of leaky Lamb waves can be identified. The results are consistent with the theoretical values. The dispersion curves of leaky Lamb waves can be traced automatically through this system.

关键词： Leaky Lamb waves LabVIEW PVDF line-focus transducer Dispersion curves Mode

作者: He Cunfu Liu Yanli Song Guorong Liu Zenghua Wu Bin

作者单位: Beijing University of Technology, Beijing, 100124, China

会议类型: 国际会议

会议名称: 2012 International Conference on Intelligent System Design and Engineering Applications(2012年智能系统设计与工程应用国际会议 ISDEA 2012)

会议地点: 三亚

会议语种:英文

页码: 1239-1242

在线出版日期: 2012-01-06（万方平台首次上网日期，不代表论文的发表时间）