摘要
玻璃纤维增强复合材料广泛应用于航空航天、建筑行业和运输行业等领域,但由于制作和使用该材料的过程中常出现脱粘、分层等缺陷,很有必要对其进行无损检测。采用太赫兹层析技术与缺陷特征波形成像相结合的方法,对不同深度、不同面积的玻璃纤维增强复合材料脱粘缺陷进行了研究。针对层析成像中出现的条纹干扰,提出了一种基于相位的太赫兹层析图像条纹抑制方法,该方法消除了层析成像中出现的条纹干扰,进一步提高了成像质量,实现了对距试件上表面5 mm、直径为5 mm、厚度为0.05 mm的脱粘缺陷的识别。该研究为对反射式太赫兹层析成像结果的处理提供了新的方法。
Glass fiber reinforced composite materials are widely used in aerospace, construction, and transportation industries. However, due to the defects such as debonding and delamination during the production and using processes of composite materials, non-destructive detection is necessary to carry out. In this paper, the method combining terahertz tomography and defect characteristic waveform imaging is used to study the debonding defects of glass fiber reinforced composite materials with different depths and different areas. Aiming at the fringe interference in tomography, a phase-based fringe suppression method for terahertz tomographic images is proposed, which eliminates the fringe interference in tomography, and further improves the imaging quality. The identification of debonding defects with a distance from surface of 5 mm, a diameter of 5 mm, and a thickness of 0.05 mm is realized. This study provides a new method for processing the results obtained by reflection type terahertz tomography.
作者
钟一帆
任姣姣
李丽娟
张丹丹
张霁旸
Zhong Yifan;Ren Jiaojiao;Li Lijuan;Zhang Dandan;Zhang Jiyang(Key Laboratory of Optoelectric Measurement and Optical Information Transmission Technology of Ministry of Education,School of Opto-Electronic Engineering,Changchun University of Science and Technology,Changchun,Jilin 130022,China;National Demonstration Center for Experimental Opto-Electronic Engineering Eduction,School of Opto-Electronic Engineering,Changchun University of Science and Technology,Changchun,Jilin 130022,China)
出处
《中国激光》
EI
CAS
CSCD
北大核心
2020年第10期328-336,共9页
Chinese Journal of Lasers
基金
吉林省科技发展计划项目(20170521003HJ)
长春理工大学青年创新基金(XJJLG-2018-03)。
关键词
光谱学
太赫兹时域光谱
层析成像
无损检测
spectroscopy
terahertz time domain spectroscopy
tomography
nondestructive detection
作者简介
钟一帆,E-mail:1493461328@qq.com;任姣姣,E-mail:zimengrenjiao@163.com。
