基于红外热波方法的液体导弹贮箱剩余壁厚测量  

Remaining Wall Thickness Measuring of Liquid Propellant Tank by Infrared Thermal Wave Method

作　　者：金国锋[1] 张炜[1] 杨正伟[1] 王冬冬[1] 

机构地区：[1]第二炮兵工程大学,602室西安710025

出　　处：《计算机测量与控制》2013年第5期1254-1256,共3页Computer Measurement &Control

基　　金：国家自然科学基金资助项目(51075390);陕西省自然科学青年基金资助项目(2012JQ8018)

摘　　要：为了实现对液体导弹贮箱腐蚀剩余壁厚的快速大面积自动测量,研究了红外热波方法厚度测量的可行性;基于一维热传导理论分析了热波检测的最大温差法和初始时刻法厚度测量方法,并制作了含平底洞的不锈钢材料模拟腐蚀试件,开展了热波检测的试验研究;结果表明红外热波方法可以快速检测贮箱的剩余壁厚,但检测结果受三维热传导的影响较大,需要进一步研究修正模型或建立基于三维热传导理论的厚度测量模型,以提高测量精度,实现贮箱壁厚的自动测量。In order to fast and large area automatic measure the remaining wall thickness of liquid propellant tank, the infrared thermal wave detection method was applied for discussing the measurement reliability. The maximum temperature difference method and the initial time method were introduced, which based on the one--dimensional heat conduction theory, and a stainless steel plat with flat--bottomed hole simulated corrosion specimen was produced for detection experiment. By applying the two methods for the experiment data, the remai- ning thicknesses were acquired. The results show that the remaining wall thickness of the tank can be quickly detected by the infrared thermal wave method, but the measure accuracy was great influenced by the three--dimensional heat conduction, therefore it is need to establish correction model or measurement model that based on three--dimensional heat conduction theory, to improve the accuracy and achieve the automatte measurement for remaining wall thickness of liquid propellant tank.

关 键 词：液体导弹贮箱 剩余壁厚测量 红外热波方法 

分 类 号：V214.5[航空宇航科学与技术—航空宇航推进理论与工程]