Measurement of Three-Dimensional Anisotropic Thermal Diffusivities for Carbon Fiber-Reinforced Plastics Using Lock-In Thermography
Measurement of Three-Dimensional Anisotropic Thermal Diffusivities for Carbon Fiber-Reinforced Plastics Using Lock-In Thermography
复制标题
使用锁定热成像技术测量碳纤维增强塑料的三维各向异性热扩散率
DOI：
10.1007/s10765-014-1755-5
复制
发表时间：
2014
影响因子：
2.2
通讯作者：
H. Nagano
中科院分区：
文献类型：
--
作者：
T. Ishizaki;H. Nagano
为了评价碳纤维增强塑料(CFRPs)等各向异性材料的导热系数，发展了一种测量材料面内热扩散率、面内各向异性分布和面外热扩散系数的新方法。测量采用激光光斑周期加热法。利用锁定热像仪检测样品的温度。热像仪可以分析周期性热输入与样品温度响应之间的相位差。在大气条件下，制备了单向(UD)和交叉铺设(CP)沥青基碳纤维增强塑料(CFRPS)样品，并进行了测试。UD样品的所有碳纤维都沿一个方向运行[]。CP样品的碳纤维有两个方向[]。结果表明，利用锁定热成像技术，可以直观地显示CFRPS的热各向异性并计算其面内热扩散率随角度的变化关系。通过分析相位差的频率依赖关系，测量了CFRPS的离面热扩散率。
A new measurement technique to measure the in-plane thermal diffusivity, the distribution of in-plane anisotropy, and the out-of-plane thermal diffusivity has been developed to evaluate the thermal conductivity of anisotropic materials such as carbon fiber-reinforced plastics (CFRPs). The measurements were conducted by using a laser-spot-periodic-heating method. The temperature of the sample is detected by using lock-in thermography. Thermography can analyze the phase difference between the periodic heat input and the temperature response of the sample. Two kinds of samples, unidirectional (UD) and cross-ply (CP) pitch-based CFRPs, were fabricated and tested in an atmospheric condition. All carbon fibers of the UD sample run in one direction []. The carbon fibers of the CP sample run in two directions []. It is found that, by using lock-in thermography, it is able to visualize the thermal anisotropy and calculate the angular dependence of the in-plane thermal diffusivity of the CFRPs. The out-of-plane thermal diffusivity of CFRPs was also measured by analyzing the frequency dependence of the phase difference.
K. Fujii：“半绝缘GaAs中浅施主的Zeaman吸收峰的不均匀加宽”Jpn。
DOI：
--
发表时间：
--
期刊：
影响因子：
--
作者：
通讯作者：
--