Study on Design of Magnetic Flux Leakage Testing Instrument for gun

作     者：Wang,Changlong Fu,Junmei(Institute of Electronic and Information, Xi’an Jiaotong University)Yingwei Xu,Zhangsui(Ordnance Engineering College, Shijiazhuang 050003, China)Wang,Changlong Jin, 

出 版 物：《微计算机信息》 (Microcomputer Information)

年 卷 期：2005年第6期

页      面：115-116+82页

学科分类：08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 081102[工学-检测技术与自动化装置] 0811[工学-控制科学与工程] 

基　　金：Supported by the N ational N atu-ral Science Foundation of C hina under G rant N o:50175109 

主　　题：magnetic flux leakage defect nondestructive evaluation peak-peak amplitude algorithm hardware design 

摘      要：The paper describes the magnetic Dipole model of magnetic flux leakage(MFL) based on the principle of MFL testing, proposes the effects of surface defect width and depth on MFL field, and presents the peak-peak amplitude algorithm that the features of defect signal are extracted. The peak-peak amplitude and separation, signal gradient variation are used as the distinguish criterions of defects. The principle of instrumental hardware design is also introduced. The introduced gun MFL testing instrument is successfully employed in the nondestructive evaluation of gun.