不同光学方法对蜂窝结构中脱粘缺陷检测  

Honeycomb Structures Using Different Optical Testing Methods

作　　者：李慧娟[1] 霍雁[2] 蔡良续[1] 黄振华[3] 

机构地区：[1]中国航空综合技术研究所,北京100028 [2]北京理工大学光电学院,北京100048 [3]辽河石油勘探局锦州工程技术处,辽宁锦州121209

出　　处：《激光与光电子学进展》2010年第11期89-94,共6页Laser & Optoelectronics Progress

基　　金：国防科技工业技术基础科研项目(T062007A002)资助课题

摘　　要：航空领域为减轻结构重量并增加结构强度,大量采用复合材料及复合结构代替传统材料,尤其是蜂窝夹层结构以其比强度高及比刚度高的优点得到广泛应用。然而,这些结构在胶接过程中更容易出现粘接不良、脱粘等质量问题。传统检测方法难以对新型结构及新型缺陷类型进行准确检测,需要开展新型检测技术研究以适应实际检测生产需求。利用激光剪切散斑方法、锁相红外热成像、脉冲红外热成像检测方法对内部出现的脱粘缺陷进行检测已经得到越来越广泛的应用,然而此三种新型方法各有检测优势及局限性。利用此三种光学检测方法对蜂窝结构中模拟脱粘缺陷进行检测,从检测原理、适用范围、应用前景等方面对此三种方法的检测优越性及局限性进行比较。结果表明,此三种方法均能对脱粘缺陷进行准确检测,激光剪切散斑方法对粘接不良缺陷检测效果优于脉冲红外及锁相红外方法。To reduce weight and improve strength in the aerospace industry,composite structure has gained popularity as a replacement for conventional materials and structures,such as adhesive bonding and honeycomb structure.However,the adhesive bonding process is more susceptible to quality variations during manufacturing than traditional joining methods.Shearography,lock-in thermography and pulsed thermography are widely used in the aerospace industry.The three techniques are often used to inspect for various aerospace applications,such as delaminations in composite structures or skin-to-core disbands in honeycomb structures.A study of detection honeycomb structures using the three non-destructive testing （NDT） methods is presented and their potential for inspecting disbanding are demonstrated.The advantages and disadvantages of these three techniques over other NDT methods are also outlined.Rusult shows that all the three NDT methed are available to measuring the bonding process,and the shearography is the best.

关 键 词：测量 红外锁相 红外脉冲 激光散斑 蜂窝结构 

分 类 号：V214.6[航空宇航科学与技术—航空宇航推进理论与工程]