Air-coupled Ultrasonic NDT of Solids Using a Focused Electrical Spark Source

被引：0
|
作者：
Dai, X. [1 ]
Zhu, J. [1 ]
Haberman, M. R. [2 ]
机构：
[1] Univ Texas Austin, Dept Civil Architectural & Environm Engn, Austin, TX 78712 USA
[2] Univ Texas Austin, Appl Res Labs, Austin, TX 78713 USA
来源：
STRUCTURAL HEALTH MONITORING 2013, VOLS 1 AND 2 | 2013年
关键词：
D O I：
暂无
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This paper presents a non-contact acoustic spark source for NDT applications. The acoustic pressure wave generated by an electric spark is focused by an ellipsoidal reflector from the inner focus of the reflector to the far focus. The focused spark source has high pressure amplitude and broad bandwidth. In this study, the authors present experimental study of using the developed spark source for generation of stress waves in solids. Both the Rayleigh surface wave and zero-group-velocity Lamb modes were measured in a 250mm concrete slab and in a 100mm steel plate.
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页码：2586 / +
页数：2
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