基于Ansys仿真的双频涡流管道裂纹检测中干扰信号的剔除

详细信息

Getting Planar Information of Weak Signal in Dual-Frequency Eddy Current Testing

摘要: 依据涡流检测的阻抗分析原理和仿真差动探头检测时的双频阻抗数据, 在Ansys仿真基础上对数据进行相位旋转相减的混频算法处理, 实现支撑板干扰下的缺陷信号识别。分析表明, 该算法具有较强的通用性, 能有效地识别支撑板干扰时的缺陷信号。
- 涡流检测 /
- 双频涡流 /
- 阻抗分析 /
- 相位旋转 /
- 混频算法
Abstract: The research of arithmetic on the basis of emulation mode in Ansys aimed to eliminate the support signal and extract the defect signal. According to the theory of impedance analysis, it simulated dual-frequency eddy current testing by the differential sensor and gets impedance data. On the basis of these data phase rotation and subtraction mixing method were applied and the extraction of the defect signal from a combination of the support signal was realized. The analysis indicated that this method was universal and was effective to distinguish between the defect signal and the support signal.
- Eddy current testing /
- Dual-frequency eddy current /
- Impedance analysis /
- Phase rotation /
- Mixing arithmetic

[1]	林俊明.多频涡流检测原理及应用[J].无损检测,1996,18(1): 23-26.
[2]	孙朝明,徐彦霖,刘宝.有限元方法在涡流传感器设计中的应用[J].传感器技术,2005,24(10): 80-85.
[3]	美国无损检测手册译审委员会.美国无损检测手册·电磁卷[M].上海: 上海世界图书出版公司,1999.
[4]	任吉林, 林俊明,等.电磁检测[M].北京: 机械工业出版社,2003.
[5]	邹建伟.多频涡流技术在冷凝铜管检测中的应用[J].湖南电力技术,1992,(3): 31-36.