Eddy Current Testing in Thickness Measurement of Material with Multi-layer Structure

摘要：

The fundamental law of the variation of the probes impedance in thickness measurement of layer-structure material using eddy current sensors including the liftoff phenomena has been found that is the variation of the conductivity of the material which is nearest to the probe of the sample with certain thickness has the critical effect in the induced variation of the probes impedance in eddy current testing at multi-layer material. Therewith the paper prove it by the operation results of the analytical model of multi-layer structure in eddy current testing.And accordingly it explains different appearances of experiments well in multi-layer material eddy current testing.

关键词： multi-layer structure eddy current thickness measuring variation in conductivity

作者: Peihua Chen Pingjie Huang Guohou Li Wen Cai Zekui Zhou

作者单位: Department of Control Science & Engineering Zhejiang University, Hangzhou 310027,China

会议类型: 国际会议

会议名称: 2009年中国控制与决策会议(2009 Chinese Control and Decision Conference)

会议地点: 广西桂林

会议语种:英文

页码: 2065-2068

在线出版日期: 2009-06-17（万方平台首次上网日期，不代表论文的发表时间）