摘要
为解决火炮零部件上裂纹等缺陷的检测问题,依据漏磁检测原理及缺陷漏磁场偶极子模型,设计了火炮零部件漏磁检测装置并进行了工程化实现.考虑到火炮零部件结构多样性,采用霍尔器件和磁阻传感器设计了多种结构的检测装置;针对漏磁信号中存在干扰信号和系统噪声的问题,采用自适应滤波和MORET-P小波变换技术,进行了信号的预处理.应用结果表明:该装置原理可行,多种结构的检测装置满足了不同火炮零部件的检测需要,自适应滤波和MORET-P小波变换技术较好地剔除了干扰信号和系统噪声,有效提取出缺陷信号.
Based on the principle of magnetic flux leakage （MFL） detect and the magnetic dipole model, the device for testing the flaw of gun components was designed and implemented. By using the Hall element and magnetoresistive sensor, many forms of devices were designed to adapt the gun component shapes. The adaptive filter and MORET wavelet transform were respectively used to eliminate interference signals and system noises, and the flaw signals can be effectively extracted. The application has proved that the principle of the device is feasible. Many forms can satisfy the test requirement of different gun components
出处
《测试技术学报》
2010年第6期552-557,共6页
Journal of Test and Measurement Technology
基金
总装"十一五"建设项目
关键词
无损检测
漏磁
裂纹
自适应滤波
小波变换
nondestructive detect
magnetic flux leakage
flaw
adaptive filter
wavelet transform
