NON-LINEAR FREQUENCY-MODULATED INFRARED THERMAL WAVE DETECTION OF DEBONDING DEFECTS IN CFRP LAMINATES

被引：2
|
作者：
Tang, Qing-Ju [1 ]
An, Si-Jie [1 ]
Feng, Cui-Zhu [1 ]
Bu, Chi -Wu [2 ]
机构：
[1] Heilongjiang Univ Sci & Technol, Sch Mech Engn, Harbin, Peoples R China
[2] Harbin Univ Commerce, Coll Light Ind, Harbin, Peoples R China
来源：
THERMAL SCIENCE | 2023年 / 27卷 / 1B期
基金：
中国国家自然科学基金;
关键词：
CFRP; infrared thermal imaging; non-linear frequency modulation; principal component analysis; thermal signal reconstruction; total harmonic distortion;
D O I：
10.2298/TSCI220809015T
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Non-linear frequency modulation infrared thermal wave detection system was established to detect and analyze debonding defects of different sizes of CFRP laminates. Principal component analysis, thermal signal reconstruction, and total harmonic distortion are used to process the infrared image sequence collected by thermal imager, and the processing effect is evaluated by signal-to-noise ratio. Compared with the other two image sequence processing algorithms, principal component analysis has better effect, can effectively improve the signal-to-noise ratio, and the defect edge in the processed image is clearer.
引用
收藏
页码：545 / 552
页数：8
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