摘要
探索太赫兹波和玻璃纤维复合材料孔隙缺陷的相互作用机理,分析在0.075和0.713 THz频率点时,孔隙率和太赫兹特征参数(折射率、消光系数和透射系数)之间的相互作用关系。实验结果表明:随着孔隙率增加,玻璃纤维复合材料密度降低,折射率呈递减趋势。在频率为0.075 THz时,基于瑞利散射理论,随着孔隙率增加,消光系数下降,透射系数上升;0.713 THz时,基于Mie散射理论,随着孔隙率增加,消光系数上升,透射系数下降。此外,孔隙形貌的复杂多变导致孔隙率与太赫兹特征参数之间存在非唯一对应关系,具有相同孔隙率的不同样本的太赫兹特征参数并不相同。
The interaction mechanism between terahertz waves and pore defect in glass fiber composites is explored,and the interaction relationship between porosity and terahertz characteristic parameters(refractive index,extinction coefficient and transmission coefficient)is analyzed at 0.075 and 0.713 THz frequency points.The experimental results show that the density and refractive index of glass fiber composites decrease with the increase in porosity.When the frequency is 0.075 THz,the extinction coefficient decreases and the transmission coefficient increases with the increase in porosity based on Rayleigh scattering theory.At 0.713 THz,based on Mie scattering theory,the extinction coefficient increases and the transmission coefficient decreases with the increase in porosity.In addition,the complex and changeable pore morphology results in a non-unique correspondence between porosity and terahertz characteristic parameters.When the different samples have the same porosity,the terahertz characteristic parameters are not the same.
作者
徐拓
路星星
沈雁
张金波
常天英
崔洪亮
张瑾
XU Tuo;LU Xing-Xing;SHEN Yan;ZHANG Jin-Bo;CHANG Tian-Ying;CUI Hong-Liang;ZHANG Jin(College of Instrumentation&Electrical Engineering,Jilin University,Changchun 130061,China;Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences,Shenzhen 518055,China;Chongqing Polycomp International Corporation,Chongqing 400082,China;Harbin FRP Institute,Harbin 150036,China)
出处
《红外与毫米波学报》
SCIE
EI
CAS
CSCD
北大核心
2023年第2期201-207,共7页
Journal of Infrared and Millimeter Waves
基金
中国科学院院级重大科研仪器研制项目(ZDKYYQ20220008)
吉林省教育厅科研规划项目(1658557217432)。
关键词
太赫兹时域光谱
玻璃纤维复合材料
孔隙率
孔隙形貌
terahertz time domain spectroscopy
glass fiber composites
porosity
pore morphology
