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Lamb波在薄铝板无损评价中的模态识别与应用

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Indexed by:期刊论文

Date of Publication:2009-07-10

Journal:无损检测

Included Journals:ISTIC

Issue:07

Page Number:517-519

ISSN No.:1000-6656

Key Words:Lamb波检测;模态;频散曲线;质点位移-幅度曲线

Abstract:在厚度为0.7 mm的铝板上制作直径为0.6~1.8 mm的通孔,以模拟薄铝板中的孔洞类缺陷。利用Matlab软件绘制了Lamb波的频散曲线和质点位移-幅度曲线。根据频散曲线和质点位移-幅度曲线,选择S0模态的Lamb波。试验结果表明,S0模态Lamb波的信号峰值与缺陷大小具有良好的对应关系。

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