高温界面接触热阻试验  

Interface contact resistance test under high temperature environment

作　　者：张婕[1] 丛琳华 吴敬涛[1] ZHANG Jie;CONG Linhua;WU Jingtao(National Key Laboratory of Strength and Structural Integrity,Aircraft Strength Research Institute of China,Xi’an 710065,China)

机构地区：[1]中国飞机强度研究所强度与结构完整性全国重点实验室,西安710065

出　　处：《沈阳航空航天大学学报》2024年第2期14-20,共7页Journal of Shenyang Aerospace University

基　　金：国家自然科学基金(项目编号:U214120164)。

摘　　要：飞行器组件之间不可避免地存在接触热阻,接触热阻的准确获取对热结构细节设计至关重要。针对高温、高压同时作用下接触热阻测量的难题,基于静态热流法自主研制了高温界面接触热阻测量装置。该装置能够有效测得给定界面压力、最高热面温度1500℃固体结构界面间的接触热阻。利用该装置,成功开展了三类热结构组件高温界面接触热阻测量试验,获得了压力、温度和界面粗糙度对结构界面接触热阻的影响规律。试验结果表明,测量装置稳定可靠、温度和压力载荷模拟精度高、试验易实施,试验结果可以为飞行器热结构设计与工程应用提供依据。Thermal contact resistance between aircraft components is unavoidably.It is very important to acquire thermal contact resistance accurately for detailed design of thermal structure.To overcome the measurement difficulty under high temperature and high pressure,a measuring device was independently developed based on static heat flow method.The device can effectively obtain the thermal contact resistance between solid structures under given interface pressure and hot surface temperature up to 1500℃.By using this device,three kinds of thermal contact resistance tests were carried out successfully.The influence law of pressure,temperature and interface roughness on the thermal contact resistance were figured out.Experimental results show that the measurement device is stable and reliable with uncomplicated operation,while the simulation accuracy for temperature and pressure load is satisfied.This device can provide supports for the development and engineering application of aircraft thermal structures.

关 键 词：接触热阻 静态热流计法 界面压力 热阻测量装置 热防护系统 高温界面 

分 类 号：TK124[动力工程及工程热物理—工程热物理]