Abstract
The results of a study comparing residual magnetic field measurements to magnetic flux leakage (MFL) measurements as methods to detect broken pre-stressing steel are presented. Analysis of two- and three-dimensional magnetic field plots shows that the residual magnetic field technique has strong potential in this application, with detectable signals from a single broken wire on a seven strand cable being found up to 70 mm from the cable surface. MFL measurements with the same yoke produced detectable signals only when the cable was completely severed, indicating that the yoke was not driving the cable into saturation during the magnetisation process. However, the residual field technique was also found to be very sensitive to the technique used to magnetise the object being inspected, indicating that considerable care would be necessary to use the technique successfully in the field.
Sign-in/Register to access full text options 
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.
