Article Periodicals » Materials Evaluation » Article
Stress Measurement Apparatus Based on Pulsed Magnetic Field

An apparatus was designed for measuring the internal stress in steel. Extrinsic hysteresis loops, magnetization curves, and surface field loops were measured at a pulsed magnetic field of 5 kA/m. It was found that the magnetic parameters change monotonically with compressive stress. The technical index shows that maximum magnetic flux density is an excellent evaluation parameter, reflecting stress with a precision of 1.6% and standard deviation of 3.185 × 10–4 T. In addition, the detection depth can reach 5 mm by employing this technique.

References
  • Babbar, V., J. Bryne, and L. Clapham, “Mechanical Damage Detection using Magnetic Flux Leakage Tools: Modeling the Effect of Dent Geometry and Stresses,’’ NDT & E International, Vol. 38, No. 6, 2005, pp. 471–477.
  • Bulte, D.P., and R.A. Langman, “Origins of the Magnetomechanical Effect,’’ Journal of Magnetism and Magnetic Materials, Vol. 251, No. 2, 2002, pp. 229–243.
  • Huang, D., B. Han, T. Hu, Z. Wang, and T. Zhang, “Pulsed Magnetic Apparatus for In Situ Stress Measurement,’’ Insight, Vol. 53, No. 9, 2011, pp. 478–481.
  • Jiles, D.C., “A New Approach to Modeling the Magnetomechanical Effect,’’ Journal of Applied Physics, Vol. 95, No. 11, 2004, pp. 7058–7060.
  • Jiles, D.C., “Theory of the Magnetomechanical Effect,’’ Journal of Physics D, Vol. 28, No. 8, 1995.
  • Langman, R., “Magnetic Properties of Mild Steel under Conditions of Biaxial Stress,’’ IEEE Transactions on Magnetics, Vol. 26, No. 4, 1990, pp. 1246–1251.
  • Langman, R., “The Effect of Stress on the Magnetization of Mild Steel at Moderate Field Strengths,’’ IEEE Transactions on Magnetics, Vol. 21, No. 4, 1985, pp. 1314–1320.
  • Li, Y., G.Y. Tian, and S. Ward, “Numerical Simulation on Magnetic Flux Leakage Evaluation at High Speed,’’ NDT & E International, Vol. 39, No. 5, 2006, pp. 367–373.
  • Lo, C.C.H., J.A. Paulsen, and D.C. Jiles, “A Magnetic Imaging System for Evaluation of Material Conditions Using Magnetoresistive Devices,’’ IEEE Transactions on Magnetics, Vol. 39, No. 5, 2003, pp. 3453–3455.
  • Sophian, A., G. Tian, and S. Zairi, “Pulsed Magnetic Flux Leakage Techniques for Crack Detection and Characterization,’’ Sensors and Actuators A: Physical, Vol. 125, No. 2, 2006, pp. 186–191.
  • Sun, Y.H., and Y.H. Kang, “A New MFL Principle and Method Based on Near-zero Background Magnetic Field,’’ NDT & E International, Vol. 43, No. 4, 2010, pp. 348–353.
  • Tomas, I., “Non-destructive Magnetic Adaptive Testing of Ferromagnetic Materials,’’ Journal of Magnetism and Magnetic Materials, Vol. 268, Nos. 1–2, 2004, pp. 178–185.
  • Vertesy, G., I. Tomas, and I. Meszaros, “Investigation of Experimental Conditions in Magnetic Adaptive Testing, Journal of Magnetism and Magnetic Materials, Vol. 315, No. 2, 2007, pp. 65–70.
  • Wilson, J.W., and G.Y. Tian, “Pulsed Electromagnetic Methods for Defect Detection and Characterization,’’ NDT & E International, Vol. 40, No. 4, 2007, pp. 275–283.
  • Withers, P.J., “Residual Stress and its Role in Failure,” Reports on Progress in Physics, Vol. 70, No. 12, 2007, pp. 2211–2264.
  • Withers, P.J., and H.K.D.H. Bhadeshia, “Residual Stress Part 1 – Measurement Techniques,” Materials Science and Technology, Vol. 17, No. 4, 2001, pp. 355–366.
  • Withers, P.J., and H.K.D.H. Bhadeshia, “Residual Stress Part 2 – Nature and Origins,” Materials Science and Technology, Vol. 17, No. 4, 2001, pp. 366–375.
  • Withers, P.J., M. Turski, L. Edwards, P.J. Bouchard, and D.J. Buttle, “Recent Advances in Residual Stress Measurement,” International Journal of Pressure Vessels and Piping, Vol. 85, No. 3, 2008, pp. 118–127.
  • Zhang, D.L., M. Zhao, and Z.H. Zhou, “Quantitative Inspection of Wire Rope Discontinuities using Magnetic Flux Leakage Imaging,’’ Materials Evaluation, Vol. 70, No. 7, 2012, pp. 872–878.
Metrics
Usage Shares
Total Views
90 Page Views
Total Shares
0 Tweets
90
0 PDF Downloads
0
0 Facebook Shares
Total Usage
90