带包覆层铁磁性管道腐蚀脉冲涡流检测技术  

Pulsed Eddy Current Inspection Technique in for Corrosion under Insulation in Ferromagnetic Tubes

作　　者：康小伟[1] 付跃文[1] 

机构地区：[1]南昌航空大学无损检测技术教育部重点实验室,南昌330063

出　　处：《无损检测》2011年第9期40-42,共3页Nondestructive Testing

基　　金：国家自然科学基金资助项目(51067007);江西省自然科学基金资助项目(2007GZW1530)

摘　　要：应用脉冲涡流检测技术,对带包覆层的铁磁性管道腐蚀进行了检测。对不同厚度的包覆层、不同面积和深度的腐蚀缺陷进行了试验,分析检测灵敏度的变化。试验结果表明,对于较大面积的腐蚀缺陷,即使包覆层较厚,在合适的检测参数下,脉冲涡流也具有很好的检测能力。In this paper, we applied pulsed eddy current（PEC} inspection technique to detect ferromagnetic tubes corrosion under insulation. By detecting corrosion of different thickness insulation and different defect areas and deepness, variation of detection sensitivity was analyzed. It was proved that as for corrosion defect with a large area, pulsed eddy current had a very good ability in testing under appropriate inspection parameters, even with a thick insulation.

关 键 词：脉冲涡流 包覆层 铁磁性 管道 

分 类 号：TG115.28[金属学及工艺—物理冶金]