红外热像检测技术在吸波涂层缺陷研究中的应用  

Application of Infrared Thermography in Research of Radar Absorbing Coating Defects

作　　者：王智勇[1] 刘颖韬[1] 王小虎[1] 张桐[1] 李艳红[1] 霍雁[1] 

机构地区：[1]北京航空材料研究院,北京100095

出　　处：《航空材料学报》2012年第3期91-95,共5页Journal of Aeronautical Materials

摘　　要：采用红外热像技术探索了一种吸波材料脱粘缺陷无损检测的方法。在铝合金基材上制备具有不同脱粘缺陷的吸波材料。采用红外热像检测系统监测热激励后材料样品表面的温度变化。通过对热图像和温度变化数据的分析,获得材料表面或缺陷的特征。试验表明这一方法可以有效地检测出铝合金基材上铁磁性吸波涂层脱粘缺陷,测量简便、结果直观,对涂层无损坏,可以实现吸波涂层施工中吸波涂层质量和使用过程中涂层可靠性的监控。A NDT method of bonding defects in radar absorbing materials is developed with the infrared thermograph technique. Radar absorbing film and radar absorbing coating samples with different bonding defects are prepared on aluminum - alloy bases. The infrared thermograph testing system is used to detect cooling behavior of a sample surface after it has been heated from a flash lamp array. Thermal properties of a defect or its host material are analyzed by IR photos and temperature datas. It is shown that bonding defects in RAC can be found using this method, which is convenient, accurate and nondestructive for coatings. The method makes it possible to control RAC quality during RAC application and RAC reliability in service.

关 键 词：红外热像 吸波涂层 涂层脱粘缺陷 

分 类 号：TB34[一般工业技术—材料科学与工程]