Abstract
ABSTRACTStudies on design optimisation of eddy current probe have been carried out for detection of deep sub-surface defects in thick stainless steel plates. The performance of send–receive type air core, ferrite core, ferrite core with outer shielding, and cup-core probes has been analysed and compared using finite element modelling. The model predicted results have indicated that the cup-core probe ensures better sensitivity for detection of deep sub-surface defects. For experimental studies, a high sensitive eddy current instrument with digital lock-in amplifier functionality implemented in LabVIEW software has been developed. Experimental results have confirmed that cup-core probe is capable of detecting defects located at 8.0 mm below the surface in 12.0 mm thick stainless steel plates as well as simulated sub-surface localised corrosions. A linear relationship between phase angle and defect depth below the surface has been observed, apart from discrimination of sub-surface and surface defects.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
