Zhong Mian, Xiang Hongxing, Li Fei, Yang Ming, Li Shouqing, Lei Xia, Tu Xiaoguang, Wang Zhiqi, Li Chen, Zhao Xin, Wei Dongshan, Xu Yajun, Zhou Chao
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引用次数: 0
Abstract
The presence of various defects in carbon fiber-reinforced composites (CFRP) can be highly detrimental to the safety of aircrafts during their operation. Therefore, it is crucial to employ an accurate and efficient nondestructive technology to detect such defects and ensure safe operation of aircrafts. In this study, we used COMSOL Multiphysics simulation software and terahertz time-domain spectroscopy (THz-TDS) to investigate the THz spectral characteristics of manually preset microcracks in CFRP. Results showed a linear relation between the THz spectral characteristics of the microcracks, including the reflectance, time-spectral amplitude, power spectral density, absorption, and absorption coefficient, with their geometric parameters such as the length, width, and position. This relation can help predict the geometric information of the microcracks through THz-TDS, facilitating a quantitative detection of microcracks in CFRP and providing a reference for practical applications in this detection.
期刊介绍:
Russian Journal of Nondestructive Testing, a translation of Defectoskopiya, is a publication of the Russian Academy of Sciences. This publication offers current Russian research on the theory and technology of nondestructive testing of materials and components. It describes laboratory and industrial investigations of devices and instrumentation and provides reviews of new equipment developed for series manufacture. Articles cover all physical methods of nondestructive testing, including magnetic and electrical; ultrasonic; X-ray and Y-ray; capillary; liquid (color luminescence), and radio (for materials of low conductivity).