Non-destructive testing of composites using long waves

被引：0

作者：

Thwaites, S. ^{[1
]}

Clark, N.H. ^{[1
]}

机构：

[1] CSIRO Natl Measurement Lab, Lindfield

来源：

Acoustics Australia | 1998年 / 26卷 / 01期

关键词：

Acoustic wave velocity measurement - Composite materials - Composite structures - Computer software - Delamination - Elastic waves - Honeycomb structures - Nondestructive examination - Personal computers - Reverberation - Scanning - Stiffness matrix;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A new technique for detecting faults in composite panels has been developed based on measurements of the local phase velocity of low frequency flexural waves. Broadband excitation is used so the method includes source configurations and software to reduce the effect of the reverberant field. An X-Y scanning version has been built employing non-contact methods and a handheld version based on a note book computer has also been constructed. The method has been used on multi-ply panels to determine stiffness matrix elements and lay-up errors. Delaminations and core damage in honeycomb sandwich panels have also been detected via scattering of the waves.

引用

页码：5 / 8

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