脉冲漏磁缺陷定位及腐蚀检测  

Defect Location and Corrosion Inspection Using Pulsed Magnetic Flux Leakage

作　　者：王海涛[1,2] 张颖[1] 杨春霞[2] 丁克勤[3] 陈如冰[4] 梁斌 王平[1] 

机构地区：[1]南京航空航天大学自动化学院,南京210016 [2]中国商飞上海飞机设计研究院,上海200235 [3]中国特种设备检测研究院,北京100013 [4]苏州市计量测试研究所,苏州215128 [5]江苏省南京锅炉压力容器安全监督检测研究院,南京210002

出　　处：《无损检测》2011年第12期21-24,共4页Nondestructive Testing

基　　金：国家自然基金资助项目(50907032);国家科技支撑计划资助项目(2009BAK58B02);国家质检总局科技计划资助项目(2009QK162);江苏省科技厅资助项目(BK2010503;BZ200951;BE2009162);苏州市科技局资助项目(SYG201024)

摘　　要：提出了一种脉冲漏磁检测技术和超声测厚技术相结合的方法,应用于铁磁性材料的腐蚀缺陷检测系统中,可进行大面积、快速缺陷检测。设计了一套完整的脉冲漏磁检测系统,通过提取时域的有效特征值,实现了对缺陷的快速定位,因脉冲信号具有很宽的频谱,其感应信号更有利于反映缺陷的信息,并采用超声测厚仪对腐蚀缺陷的深度进行定量检测。通过试验表明了所采用方法的可行性和有效性,具有较大的应用价值。This paper proposed a method of pulse magnetic flux leakage testing technology combined with ultrasonic thickness technology. The method if applied in ferromagnetic materials corrosion defects detection system, could undertake large area and fast detection of flaws. The design of a complete pulsed magnetic flux leakage detection system, achieved fast positioning of defects by extracting effective characteristic value of time domain. Due to pulse being with a very wide spectrum, its induction signal was more conducive to reflect the defect information, and at the same time ultrasonic thickness gauge was used to detect quantitatively the depth of corrosion defects. The experiments proved the feasibility and effectivefiess of the method, so the method had great practical value.

关 键 词：脉冲漏磁 缺陷 定位 腐蚀检测 

分 类 号：TG115.28[金属学及工艺—物理冶金]