Eddy Current Measurement of Case Hardened Depth of Steel Components
Steel components are often subjected to a hardening process in which the surface gets hardened in order to improve resistance to wear. This introduces a casehardened layer. Various steel components have different requirements for the case depth. It is necessary to develop a nondestructive tool to monitor case depth for quality control. The case hardening process produces changes in the microstructure. As a result, the electrical conductivity and magnetic permeability in the casehardened region are different from those in the substrate. This makes it possible to determine case depth using eddy current method. In this paper, multi-frequency eddy current and pulsed eddy current methods will be investigated to measure case hardened steel components. Results and recommendations will be provided showing comparison between measured and actual case depths.
case hardened steel case depth multi-frequency eddy current pulsed eddycurrent
John CUFFE Haiyan SUN Yuri PLOTNIKOV Shridhar NATH Aparna SHEILA-VADDE
GE Inspection Technologies, Lewistown, PA, USA, john. GE Global Research, Niskayuna, NY, USA, GE John F Welch Technology Centre, Bangalore, India, aparna.
国际会议
第十七届世界无损检测会议(17th World Conference on Nondestructive Testing)
上海
英文
2023-2029
2008-10-25（万方平台首次上网日期，不代表论文的发表时间）