Structural Health Monitoring Based on Laser Excitation Vibration Test and Wavelet Transform

被引：0
|
作者：
Cao, Shanshan [1 ,2 ]
Kajiwara, Itsuro [2 ]
Li, Xisheng [1 ]
Hosoya, Naoki [3 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Automat & Elect Engn, Beijing 100083, Peoples R China
[2] Hokkaido Univ, Div Human Mech Syst & Design, Kita Ku, N13,W8, Sapporo, Hokkaido 0608628, Japan
[3] Shibaura Inst Technol, Dept Engn Sci & Mech, Tokyo, Japan
来源：
2017 ELEVENTH INTERNATIONAL CONFERENCE ON SENSING TECHNOLOGY (ICST) | 2017年
基金：
日本学术振兴会;
关键词：
Laser Ablation; Laser Excitation; Damage Detection; Vibration Test; Impulse Response; Wavelet Transform;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, a vibration testing and health monitoring system is proposed to detect damage in aluminum plate structures. This system is based on an impulse response excited by laser. A high power Nd:YAG pulse laser is used to produce an ideal impulse excitation via laser-ablation on an aluminum plate surface. The propagation, reflection and superposition of elastic wave will be happened in structures. Laser Doppler vibrometer is used for measuring data. And by means of spectrum analyzer and computer, wavelet transform is applied to analyze the waveform characteristics to detect and identify the location of the damage. The applicability of the present approach is validated by simulation and experimental results, demonstrating the ability of the method to detect and identify the location of damage induced on the aluminum plate structures.
引用
收藏
页码：408 / 413
页数：6
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