Defect imaging via chirp signal excitation in plate

被引：2
|
作者：
Chen, Honglei [1 ]
Deng, Fei [2 ]
Zhang, Xi [2 ]
机构：
[1] Shanghai Inst Technol, Coll Elect & Elect Engn, Shanghai 2002351, Peoples R China
[2] Ningbo Univ Technol, Sch Elect & Informat Engn, Ningbo 315211, Zhejiang, Peoples R China
来源：
ADVANCES IN MECHATRONICS, AUTOMATION AND APPLIED INFORMATION TECHNOLOGIES, PTS 1 AND 2 | 2014年 / 846-847卷
关键词：
guided wave; chirp signal; arc imaging algorithm;
D O I：
10.4028/www.scientific.net/AMR.846-847.826
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The chirp signal can bring some useful information for structural non-destructive evaluation (NDE) applications due to its broad frequency components with different sensitivity to defects that exist in test pieces. This paper introduces a defect imaging method based on the chirp signal. When a chirp signal is used as excitation in the guided wave detection system, tone burst results can be gotten from the response easily. Numerical simulation results show that this method simplifies the procedure to find the best exciting frequency and guided wave mode for the hole defect detection, and yields more accurate defect imaging results with arc imaging algorithm.
引用
收藏
页码：826 / +
页数：2
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