基于剪切散斑干涉的固体推进剂内部缺陷识别  

Internal defect identification of solid propellant basedon laser shearography

作　　者：常军 王虎[2] 占明明 刘斌 简琦薇 CHANG Jun;WANG Hu;ZHAN Mingming;LIU Bin;JIAN Qiwei(School of Mechanical and Automotive Engineering,Shanghai University of Engineering Science,Shanghai 201620,China;Hubei Institute of Aerospace Chemical Technology,Xiangyang 441003,China)

机构地区：[1]上海工程技术大学机械与汽车工程学院,上海201620 [2]湖北航天化学技术研究所,湖北襄阳441003

出　　处：《兵器装备工程学报》2024年第5期100-105,共6页Journal of Ordnance Equipment Engineering

摘　　要：基于激光剪切散斑干涉技术搭建的高精度实时无损检测系统,对固体推进剂进行了负压加载条件下内部缺陷检测,对比分析了衬层界面脱粘和基体孔洞2种不同类型缺陷的表面散斑干涉条纹图和归一化离面位移值,利用剥离实验和有限元数值模拟,分别分析了不同类型缺陷的固体推进剂界面粘接强度和表面离面位移的差异。结果表明,相同加载条件下,衬层脱粘引起的包覆层表面归一化离面位移明显大于基体孔洞缺陷所引起的离面位移,达到了1~2数量级。本研究为固体推进剂衬层脱粘和基体孔洞缺陷的无损检测提供了重要的研究途径。A high-precision real-time nondestructive testing system based on laser shear speckle interferometry technology was built to detect internal defects of solid propellant under negative pressure loading,and the surface speckle interferometry fringe patterns and normalized out-of-plane displacement values of two different types of defects of interfacial debonding and grain holes were compared and analyzed.The differences of interface bonding strength and surface out-of-plane displacement of solid propellant with different types of defects were analyzed by peel experiment and finite element numerical simulation.The results show that under the same loading conditions,the normalized out-of-plane displacement caused by debonding of lining is significantly larger than that caused by the holes in the grain,reaching 1~2 orders of magnitude.This study provides an important approach for the nondestructive testing of solid propellant liner debonding and matrix hole defects.

关 键 词：固体推进剂 剪切散斑干涉 衬层脱粘 基体孔洞 光学无损检测 

分 类 号：TJ0[兵器科学与技术—兵器发射理论与技术]