固体火箭发动机衬层固化状态超声波实时监测方法  

Real Time Ultrasonic Monitoring of Curing State of Liner in Solid Rocket Engine

作　　者：杨亚军[1] 王召巴[1] 

机构地区：[1]中北大学电子测试技术国防重点实验室,山西太原030051

出　　处：《兵工学报》2014年第5期697-702,共6页Acta Armamentarii

基　　金：国家自然科学基金项目(61201412);山西省青年科技研究基金项目(20120210115)

摘　　要：为了正确判定衬层"半固化"状态,更好地控制发动机质量,采用了超声纵波反射技术和激光测厚技术实时监测衬层固化反应过程,并针对衬层固化温度和普通超声探头工作环境要求设计了衬层固化过程超声实时监测系统,根据衬层厚度、纵波传播速度、声衰减系数的变化对衬层固化状态进行表征。监测结果表明,随着衬层固化反应的进行,衬层厚度和声衰减系数逐渐减小,纵波传播速度逐渐增大,完整反应了衬层固化状态的变化,能够判定衬层的"半固化"状态。The ultrasonic longitudinal wave reflection technology and the laser thickness measurement technology are used to monitor the curing process of solid rocket engine liner. An ultrasonic system is designed to monitor the curing process of liner in real-time to meet the need of using common ultrasonic probe under the curing temperature. The curing state of liner is characterized by the changes of liner thickness, ultrasonic longitudinal wave velocity and acoustic attenuation coefficient. The experimental results show that the liner thickness and acoustic attenuation coefficient decrease and the propagation velocity of longitudinal wave increases gradually during the curing reaction of liner, which reflects the change in curing state of liner, and its ＂half curing＂ state can be determined.

关 键 词：兵器科学与技术 固体火箭发动机 衬层 固化状态 超声纵波 

分 类 号：V438[航空宇航科学与技术—航空宇航推进理论与工程]