激光剪切散斑方法对脱粘缺陷的定量测量  

Quantitative Measurement for Disbanding Defect Using Shearography

作　　者：李慧娟[1] 张京焘[1] 黄振华 

机构地区：[1]中国航空综合技术研究所,北京100028 [2]辽河油田锦州采油厂,锦州121209

出　　处：《宇航材料工艺》2011年第5期85-88,共4页Aerospace Materials & Technology

基　　金：航空科学基金项目(2009ZD41004)

摘　　要：采用胶接方式连接的复合结构在生产制造过程中容易出现脱粘问题,将严重影响产品的结构完整性。采用新型检测方法对脱粘缺陷进行定量测量对于保障产品质量、提高检测效率起到至关重要的作用。本文介绍了激光剪切散斑方法的检测原理、蜂窝夹层结构中脱粘缺陷的形成原因与结构特点及对脱粘缺陷的验收规范。利用激光剪切散斑方法对脱粘缺陷进行检测,分析激光剪切散斑方法对脱粘缺陷进行定量测量的检测精度。通过对已知间距缺陷进行定量测量,检测结果与实际缺陷尺寸吻合较好,检测精度在10%以内。结果表明该方法对脱粘缺陷的检测精度能够满足实际生产的检测需要。The disbanding defect is prone to be produced during adhesive bonding process.The integrality,strength and rigidity of product would be broken by disbanding.Investigating the capability of quantitative measurement and accuracy of shearography method is more impotent to ensure the product quality and testing efficiency.This paper presents the test principle of shearography,the characteristic acceptance specification of disbanding defect.The detecting sensitivity and accuracy of quantitative measurement is investigated when sheargoraphy method is used for inspecting disbanding on honeycomb structures.The quantitative measurement result shows that the measurement result is equal to the trim size and the accuracy is less than 10%.The shearography method could be used for inspecting the honeycomb structure products.

关 键 词：激光剪切散斑 检测技术 灵敏度 

分 类 号：V267[航空宇航科学与技术—航空宇航制造工程]