摘要
近年来,高超声速飞行器结构元件的高温应变测量成为结构热强度试验研究的热点问题,如何准确地得到试验件在高温状态下的应变,对于高超声速飞行器热应力分析具有重要意义。本文通过紫外带通滤波成像技术来抑制极端高温环境或辐射加热环境下热辐射的影响,使用三维数字图像相关方法实现了高温环境中三维热变形的测量。
High temperature strain measurement of hypersonic aircraft structural component is becoming the key issue of thermal strength test in recent years.How to exactly get the real high temperature strain of test piece is very important to analysis the thermal stress of hypersonic aircraft.In this paper,the technology of ultraviolet band-pass filtering is utilized to restrain the influence of thermal radiation,and 3-dimensional thermal deformation measurement in high temperature condition is realized by using 3-dimensional DIC method.
作者
郑瑶
柴葳
Zheng Yao;Chai Wei(Aircraft Strength Research Institute of China,Xi′an 710065,Shaanxi,China)
出处
《工程与试验》
2020年第4期48-50,共3页
Engineering and Test
关键词
热强度试验
应变测量
数字图像相关法
thermal strength test
strain measurement
digital image correlation method
