HTPB固体推进剂老化性能检测新方法  

A new method for detecting the aging property of HTPB solid propellant

作　　者：任宁莉[1,2] 赵新强[2] 邓凯[3] 余志刚[2] 

机构地区：[1]清华大学工程物理系,北京100084 [2]第二炮兵装备研究院,北京100085 [3]第二炮兵工程学院,陕西西安710025

出　　处：《推进技术》2011年第5期728-731,共4页Journal of Propulsion Technology

摘　　要：引入了光致正电子湮灭分析方法 (PIPA,Photon Induced Positron Analysis),对HTPB固体推进剂老化性能进行检测研究。介绍了PIPA的原理、PIPA试验平台的搭建以及PIPA的数值处理方法,并用511KeV能谱的FWHM值ε(半高宽,Full Width Half Maximum)表征HTPB固体推进剂老化引起的微观变化,所得结论与固体推进剂的常规测试一致,证明了PIPA用于固体推进剂老化性能无损检测的可行性。To study the aging character of HTPB solid propellant,PIPA（Photon Induced Positron Analysis） was presented.The positrons created by the PIPA process are formed throughout the solid propellant.The principle of PIPA was introduced along with the built-up of the PIPA system and the arithmetic method.The information of HTPB solid propellant micro change due to aging was extracted from the FWHM of 511keV spectra.There is positive correlation between the results of experiments and regular tests,indicating that PIPA is a feasible nondestructive detection method for solid propellant aging evaluation.

关 键 词：光致正电子湮灭分析 HTPB固体推进剂 无损探伤 老化 

分 类 号：V435.1[航空宇航科学与技术—航空宇航推进理论与工程]