大型航天器密封承压结构耐压试验安全监测技术研究  

Research on technology for safety monitoring in pressure-tight test of sealed pressure-bearing structure of large spacecraft

作　　者：庞健 王飞 刘雅莉 吴定秀 吴嘉鹏 PANG Jian;WANG Fei;LIU Yali;WU Dingxiu;WU Jiapeng(China Academy of Space Technology;Beijing Spacecraft Manufacturing Co.,Ltd.;China Aerospace Components Engineering Center;Beijing Orient Institute of Measurement and Test:Beijing 100094,China)

机构地区：[1]中国空间技术研究院,北京100094 [2]北京卫星制造厂有限公司,北京100094 [3]中国航天宇航元器件工程中心,北京100094 [4]北京东方计量测试研究所,北京100094

出　　处：《航天器环境工程》2024年第2期204-210,共7页Spacecraft Environment Engineering

摘　　要：针对耐压试验过程中仅监测密封承压结构的应变、位移信息,无法实时监测密封承压结构损伤状态,因而难以识别和预示密封承压结构失效风险的问题,基于超声导波缺陷监测方法进行密封承压结构耐压试验中密封承压结构安全状态在线监测方案设计,并搭建监测系统进行了试验验证。结果显示,该方案利用高频混合声场动态传感技术解决了大型复杂密封承压结构安全状态难监测、异常状态难以及时有效定位等问题,实现了耐压试验安全状态的有效实时监测和及时预警,为大型航天器密封承压结构研制提供了有效的安全技术保障。Due to the fact that only the strain and displacement information of the structure are monitored during the pressure-tight test,it is almost impossible to discover the structural damage of pressure-bearing structures in real time,let alone identify and predict the risk of structural failures.An online scheme for monitoring the safety status of sealed pressure-bearing structures in pressure-tight tests was designed based on the ultrasonic guided wave defect monitoring method.In addition,a monitoring system for test verification was built.The results show that the scheme using high-frequency hybrid sound field dynamic sensing technology has solved the problems involving difficulties to monitor the safety status and to locate the abnormal conditions timely and effectively in large and complex pressure-bearing structures.The effective real-time monitoring and timely warning for the safety of pressure-tight test are achieved.It may provide an effective safety technical guarantee for the development of large spacecraft sealed pressure-bearing structures.

关 键 词：航天器 密封承压结构 耐压试验 安全监测 

分 类 号：TG115.28[金属学及工艺—物理冶金]