期刊
SENSORS
卷 16, 期 5, 页码 -出版社
MDPI
DOI: 10.3390/s16050743
关键词
CFRP; FOD; lock-in thermography; pulsed thermography; vibrothermography
资金
- government of Quebec
- government of Bavaria
- Ministere des Relations Internationales
- Ministry of External Affairs [13.311]
- Shenyang University of Technology
- Brazilian National Council for Scientific and Technological Development-CNPq [166285/2015-3]
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Hutchinson Inc.
In this article, optical excitation thermographic techniques, including pulsed thermography and lock-in thermography, were used to detect foreign object defect (FOD) and delamination in CFRP. Then, vibrothermography as an ultrasonic excitation technique was used to detect these defects for the comparative purposes. Different image processing methods, including cold image subtraction (CIS), principal component thermography (PCT), thermographic signal reconstruction (TSR) and Fourier transform (FT), were performed. Finally, a comparison of optical excitation thermography and vibrothermography was conducted, and a thermographic probability of detection was given.
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