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Nondestructive Evaluation of Carbon Fiber Reinforced Polymer Composites Using Reflective Terahertz Imaging
Zhang, Jin1; Li, Wei2; Cui, Hong-Liang1,2; Shi, Changcheng2; Han, Xiaohui1; Ma, Yuting1; Chen, Jiandong1; Chang, Tianying1,2; Wei, Dongshan2; Zhang, Yumin3
2016-06-01
摘要Terahertz (THz) time-domain spectroscopy (TDS) imaging is considered a nondestructive evaluation method for composite materials used for examining various defects of carbon fiber reinforced polymer (CFRP) composites and fire-retardant coatings in the reflective imaging modality. We demonstrate that hidden defects simulated by Teflon artificial inserts are imaged clearly in the perpendicular polarization mode. The THz TDS technique is also used to measure the thickness of thin fire-retardant coatings on CFRP composites with a typical accuracy of about 10 micrometers. In addition, coating debonding is successfully imaged based on the time-delay difference of the time-domain waveforms between closely adhered and debonded sample locations.
关键词carbon fiber reinforced polymer composites fire-retardant coatings nondestructive evaluation coating debonding terahertz time-domain spectroscopy imaging
DOI10.3390/s16060875
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发表期刊SENSORS
ISSN1424-8220
卷号16期号:6页码:12
通讯作者Cui, HL (reprint author), Jilin Univ, Coll Instrumentat & Elect Engn, Changchun 130061, Peoples R China. ; Cui, HL ; Shi, CC (reprint author), Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Key Lab Multiscale Mfg Technol, Res Ctr Terahertz Technol, Chongqing 400714, Peoples R China.
收录类别SCI
WOS记录号WOS:000378756500123
语种英语