材料科学
激光器
电加热
复合材料
辐照
温度控制
温度测量
复合数
梁(结构)
感应加热
有限元法
材料性能
辐射采暖
光学
机械工程
结构工程
热力学
物理
电气工程
电磁线圈
核物理学
工程类
作者
Jiawei Wang,Weiping Liu,Yuwei Lv,Chenghua Wei,Shuang Zhang,Biao Li,Guobin Feng Feng,Bin Li
摘要
A method of double-sided laser irradiation is presented for temperature control in high temperature mechanical properties test of composite materials. Based on the finite element method (FEM), a numerical model of temperature distribution of materials was established. The effects of specification, laser heating area and laser intensity,laser heating time on temperature uniformity during heating were analyzed. The results show that the laser heating area, thickness of the specimen, laser intensity and laser heating time have a decisive effect on the temperature uniformity. The limit temperature control precision reaches 2% for carbon fiber reinforced polymer(CFRP), and the heating time can be controlled in minutes. The method is especially suitable for composite materials that cannot be heated by electric induction in the traditional heating experiment of high heating rate. Furthermore, an experimental scheme of double-sided irradiation heating using a single laser beam was designed. Experiment results illustrated that the temperature control precision was high before the material appears obvious flame. This method has the advantages of rapid heating rate, high testing efficiency and high testing temperature. It can make a reference for mechanical properties test of composite materials at elevated temperature with rapid heating rate
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