中文摘要：

利用红外热成像技术,研究了编织碳纤维复合材料（CFRP）在纤维束编织平面内的热传导规律。根据激光调制加热原理,推导了纤维束平面内热扩散系数和相位梯度的关系,并搭建了相应的实验平台,对CFRP试件进行实验。以玻璃碳作为参考材料,将测得的红外辐射相位信号进行规格化处理,并利用高斯滤波去除红外热图像的噪声。实验结果表明,碳纤维复合材料的各向异性使其在纤维束编织平面各方向上的热传导呈现一定的规律,且与传导方向相关。当激光调制频率小于2Hz时,可以测量得到CFRP试件在平面不同方向上的热扩散系数。

英文摘要：

Infrared thermography is introduced to measure the in-plane thermal conduction of woven carbon fiber reinforced polymers （CFRP）, According to the principle of modulated laser heating, the relationship between the in plane thermal diffusivity and the phase gradient is deduced, and the experiment platform is established to test the CFRP samples. Glassy carbon is used as the reference material, and the measured infrared radiation signal is normalized. The Gaussian filtering is applied to removing the noise of infrared thermal images. The experiment results show that the in-plane thermal conduction in various directions is related to the conduction direction owing to the anisotropy of CFRP. When the modulated frequency is lower than 2 Hz, the implane thermal diffusivity of samples in each direction can be measured.