摘要
本文介绍了漏磁检测原理以及缺陷漏磁场磁偶极子模型。讨论了缺陷深度和宽度对漏磁场的影响。提出提取缺陷信号特征的峰峰值算法,根据信号的峰峰值大小、间隔和信号梯度变化作为缺陷判别标准。说明了火炮漏磁检测仪的硬件设计原理,本文介绍的火炮漏磁检测仪已成功用于火炮的无损检测中。
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 standards 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.
出处
《微计算机信息》
北大核心
2005年第06S期113-114,82,共3页
Control & Automation
基金
国家自然科学基金资助项目
项目编号:50175109
关键词
漏磁
缺陷
无损检测
峰峰值算法
硬件设计
magnetic flux leakage
defect
nondestructive evaluation
peak-peak amplitude algorithm
hardware design
