Laser based remote and rapid inspection for composite plates

被引：0
|
作者：
Ma, Zhaoyun [1 ]
Yu, Lingyu [1 ]
机构：
[1] Univ South Carolina, Dept Mech Engn, Columbia, SC 29208 USA
来源：
SMART STRUCTURES AND NDE FOR INDUSTRY 4.0, SMART CITIES, AND ENERGY SYSTEMS | 2020年 / 11382卷
关键词：
Lamb waves; remote inspection; pulsed laser; laser vibrometer; composites; automatic excitation; DAMAGE DETECTION; LAMB WAVES; DELAMINATION DETECTION; GUIDED-WAVE; ARRAYS;
D O I：
10.1117/12.2558192
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
Composites have been extensively used in aero structure and become the predominate components in the new airframes. Thus, rapid and effective inspection for composite structures is highly desired in aerospace engineering in order to shorten the certificate cycle for new structures or provide safety guarantee for existing ones. In this paper, a laser based remote Lamb wave inspection system is presented and implemented on composite plates for simulated damage detection. The system employs pulsed laser (PL) and scanning laser Doppler vibrometer (SLDV) for noncontact and remote Lamb wave actuation and wavefield sensing. A composite plate with simulated defect (surface bonded quartz rod) is inspected with the PL-SLDV laser system. Wave scattering are observed in the SLDV acquired wavefield and the damage is further evaluated with wavefield imaging and frequency wavenumber analysis. Potential application towards automatic PL Lamb wave excitation is also explored through employing an industry robotic arm towards rapid inspection.
引用
收藏
页数：7
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