现代应用物理2024，Vol.15Issue(2)：202-208,7.DOI:10.12061/j.issn.2095-6223.2024.021203
基于激光加热和DIC技术的C/C复合材料热膨胀系数测量实验
Measurement of Thermal Expansion Coefficient of C/C Composites Based on Laser Heating and DIC Technology
摘要
Abstract
In view of the disadvantages of the traditional thermal expansion coefficient measurement method,such as long experimental time,low test temperature,and difficulty to apply to aerobic environment,the thermal expansion coefficient measurement method of C/C composite material is proposed based on continuous laser heating and digital image correlation(DIC)technology.The thermal expansion coefficients of two types of C/C composites,namely needle-punched and three-dimensional woven,are obtained under laser-induced high-temperature ramp rate and aerobic environment from room temperature to approximately 1 000 ℃.The results show that the coefficients of thermal expansion for the needle-punched and three-dimensional woven types are generally smaller in the direction of fibre reinforcement,although there are some differences with increasing temperatures.The method proposed here for measuring thermal expansion coefficient has several advantages,including high experimental efficiency,high temperature rise rate,and suitability for aerobic environments.This method is of great significance for characterising the high-temperature thermomechanical properties of high-temperature resistant materials such as C/C composites.关键词
C/C复合材料/热膨胀系数/激光加热/高温升速率/数字图像相关技术Key words
C/C composite/coefficient of thermal expansion(CTE)/laser heating/high heating rate/DIC technology分类
信息技术与安全科学引用本文复制引用
汪由胜,王家伟,王立君,陈正阁,薛全喜,黄珂..基于激光加热和DIC技术的C/C复合材料热膨胀系数测量实验[J].现代应用物理,2024,15(2):202-208,7.基金项目
激光与物质相互作用全国重点实验室基金资助项目(SKLLIM2302) （SKLLIM2302）
