在涡流探伤中采用相敏检波电路提取裂纹信号  

Getting the Signal of Cracks by Phase-sensitive Circuit in Eddy Current Flaw Detection

作　　者：杨风[1] 连靖[1] 郎文杰[1] 

机构地区：[1]华北工学院自动控制系,山西太原030051

出　　处：《华北工学院学报》2003年第1期21-23,共3页Journal of North China Institute of Technology

摘　　要：　目的　通过提取裂纹信号实现板材裂纹深度的定量标定.方法　采用相敏检波电路提取裂纹信号.结果　该方法对提取裂纹信号是有效的.结论　裂纹深度与裂纹信号的大小成单调上升关系.Aim\ To achieve quantitative indication of crack depth on the surface of steel material in eddy current flow detection. Methods\ A phasesensitive circuit is used to detect the signal of cracks. Results\ For getting a signal of crack depth, this method is effective. Conclusion\ There is a monotonic relation between the increment of crack depth and that of crack signal.

关 键 词：涡流探伤 相敏检波电路 裂纹 信号提取 

分 类 号：TH878[机械工程—仪器科学与技术] TG115.28[机械工程—精密仪器及机械]