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.
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页码：351 / 356
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