Magnetomechanical Measurements for Nondestructive Evaluation of Failure in Steel Structural Element

• Published in: Journal of materials engineering and performance Vol. 22; no. 5; pp. 1351 - 1354
• Main Authors: Bao, Sheng, Xu, Fan, Wang, Jiyang, Lou, Hangfei
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.05.2013; Springer
• Subjects: Analysing. Testing. Standards; Applied sciences; Characterization and Evaluation of Materials; Chemistry and Materials Science; Corrosion and Coatings; Engineering Design; Exact sciences and technology; Materials Science; Measurement of properties and materials state; Metals. Metallurgy; Nondestructive testing; Quality Control; Reliability; Safety and Risk; Tribology; nondestructive evaluation (NDE); steel joint; buckling; magnetomechanical effect; Magnetomechanical effects; Displacement(deformation); Magnetic measurement; Magnetic field effect; Non destructive method; Compressive stress; Structural steel; Applied load; Non destructive test; Buckling; Monitoring
• ISSN: 1059-9495; 1544-1024
• DOI: 10.1007/s11665-012-0410-1

This research aims to explore magnetomechanical effect as a nondestructive method to monitor the failure process of steel structural elements subjected to compressive loadings. Experiments on steel tubular joints were carried out to study the relationship between the applied load and the magnetomechanical field. Results show that the mechanical response and the magnetomechanical response demonstrate similar behavior to the applied load in the whole loading progress. At the critical load of buckling, the load-magnetic field curve has a bifurcation point corresponding to the traditional bifurcation of load-displacement curve. This research demonstrates that the stress-induced magnetic filed can be utilized as an important indicator of impending failure in steel structural elements.