Nondestructive Testing and Predictability of Microcracks in Carbon Fiber-Reinforced Composites via Terahertz Time-Domain Spectroscopy

IF 0.9 4区 材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING Russian Journal of Nondestructive Testing Pub Date : 2024-04-09 DOI:10.1134/S1061830923600818
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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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.

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通过太赫兹时域光谱对碳纤维增强复合材料中的微裂纹进行无损检测和预测
摘要 碳纤维增强复合材料(CFRP)中存在的各种缺陷会严重影响飞机在运行过程中的安全。因此,采用准确、高效的无损技术检测此类缺陷,确保飞机的安全运行至关重要。在这项研究中,我们使用 COMSOL Multiphysics 仿真软件和太赫兹时域光谱(THz-TDS)来研究 CFRP 中手动预设微裂纹的太赫兹光谱特征。结果表明,微裂纹的太赫兹光谱特性(包括反射率、时谱振幅、功率谱密度、吸收率和吸收系数)与其几何参数(如长度、宽度和位置)之间存在线性关系。这种关系有助于通过 THz-TDS 预测微裂纹的几何信息,促进 CFRP 中微裂纹的定量检测,并为该检测的实际应用提供参考。
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来源期刊
Russian Journal of Nondestructive Testing
Russian Journal of Nondestructive Testing 工程技术-材料科学:表征与测试
CiteScore
1.60
自引率
44.40%
发文量
59
审稿时长
6-12 weeks
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).
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