Time-delay estimation for the multi-mode ultrasonic Lamb waves based on the chirplet dispersion transform

被引:0
|
作者
Xing, Hongyan [1 ]
Liu, Zhaoquan [1 ]
Wan, Mingxi [1 ]
机构
[1] Dept. of Biomed. Eng., Sch. of Electron. and Info. Eng., Xi'an Jiaotong Univ., Xi'an 710049, China
来源
Shengxue Xuebao/Acta Acustica | 2002年 / 27卷 / 04期
关键词
Dispersion (waves) - Mathematical transformations - Nondestructive examination - Parameter estimation;
D O I
暂无
中图分类号
学科分类号
摘要
Multi-mode ultrasonic Lamb waves, which are suitable for nondestructive testing of thin plates, have dispersion characters and accompany with a lot of useful information of time delay. But there are many difficulties to estimate the time delay parameter. Based on the adaptive chirplet dispersion transform, a new method was put forward for the time delay estimation to make the parameter estimation possible. The results of the simulations and experiments show its effectiveness.
引用
收藏
页码:351 / 356
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