التفاصيل البيبلوغرافية
| العنوان: |
All-optical laser ultrasonic technique for imaging of subsurface defects in carbon fiber reinforced polymer (CFRP) using an optical microphone. |
| المؤلفون: |
Song, Peng, Liu, Junyan, Li, Zhijie, Wu, Siyuan, Sun, Xiaogang, Yue, Honghao, Pawlak, Michal |
| المصدر: |
Journal of Applied Physics; 4/28/2022, Vol. 131 Issue 16, p1-8, 8p |
| مصطلحات موضوعية: |
LASER ultrasonics, ULTRASONIC imaging, CARBON fiber-reinforced plastics, PULSED lasers, THERMOGRAPHY, CARBON fibers, ULTRASONIC testing, NONDESTRUCTIVE testing |
| مستخلص: |
Defects, such as delamination and debonding, are critical to the performance of carbon fiber-reinforced polymer (CFRP) composites. In recent years, non-destructive testing techniques have been improved for the inspection of these defects among CFRPs. In this study, an all-optical and non-destructive laser ultrasonic technique with an optical microphone detection module has been presented to detect the artificial subsurface defects among the CFRP composites. A finite element simulation based on the thermo-mechanical coupling model was used to study the process of nanosecond pulsed laser excitation of the CFRP laminate to produce ultrasound and the propagation behavior of ultrasound among the CFRP laminate. A series of non-contact laser ultrasonic testing experiments were carried out to study the flat bottom holes of different sizes via a laser ultrasonic detection system. The artificial subsurface defects were reliably identified by the presented all-optical laser ultrasonic system imbedded in the optical microphone using four feature images. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
