Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Inspection of Cracks on the Express Train Wheel Using a High Speed Scan Type Magnetic Camera

초고속 스캔형 자기카메라에 의한 고속열차 차륜 탐상

  • Published : 2008.11.01
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Abstract

A novel nondestructive testing (NDT) system, which is able to detect a crack with high speed and high spatial resolution, is urgently required for inspecting small cracks on express train wheels. This paper proposes a high speed scan type magnetic camera, which uses the multiple amplifying circuits and the crack indicating pulse output system. The linearly integrated Hall sensors are arrayed in parallel, and the Hall voltages from each sensor in the scanning direction are obtained and amplified. High-speed NDT can be achieved by using the exclusive analog-digital converter and micro-processor because the ${\partial}\;V_H/\;{\partial}$ x value, which provides the most important crack information, can be obtained by buffering and calculating. The effectiveness of the novel method was verified by examine using cracks on the wheel specimen model.

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References

  1. Miyamoto., 1999, "Investigation of the Derailment Accident of the Express Train," Ken-yusha Inc Press, p. 5
  2. Kwon, S. J., Lee, D. H., Seo, J. W. and Kwon, S. T., 2007, "Damage Evaluation of Wheel Tread for High Speed Train Using Replication and Fracture Mechanics Characteristics," Trans. of KSME(A), Vol. 31, No. 7, pp. 756~763 https://doi.org/10.3795/KSME-A.2007.31.7.756
  3. Seo, J. W., Goo, B. C., Choi, J. B. and Kim, Y. J., 2004, "A Study on the Contact Fatigue Life Evaluation for Railway Wheels Considering Residual Stress Variation," Trans. of KSME(A), Vol. 28, No. 9, pp. 1391~1398 https://doi.org/10.3795/KSME-A.2004.28.9.1391
  4. Park, B. N., Kim, K. H. and Kim, H. K., 2002, "An Evaluation Method of Fatigue Strength and Reliability in a Railway Wheel with an Application of Strength-Stress Interference Model," J. Kor. Soc. Rail., Vol. 5, No. 2, pp. 131~137
  5. Rainer P., Erhard A., Montag H. J., Thomas H. M. and Wuestenberg H., 2004, "NDT Techniques for Railroad Wheel and Gauge Corner Inspection," NDT&E Inter., Vol. 37, pp. 89~94 https://doi.org/10.1016/j.ndteint.2003.06.001
  6. Kappes W., Rockstroh B., Baehr W., Kroening M., Rodner C., Goetz J. and Nemec D., 2006, " Application of New Front-end Electronics for Non-destructive Testing of Railroad Wheel Sets," ECNDT, Th.1.4.1, pp. 1~12
  7. Hwang, J. S., Lee, J. Y., Jun, J. W., Wang, R., Choi, S. H. and Hong, S. P., 2007, "Scan Type Magnetic Camera Images with a High Spatial Resolution for NDT Obtained by Using a Linearly Integrated Hall Sensor Array," Proceedings of IEEE International Workshop on Imaging Systems and Techniques, pp. 1~6
  8. Lee, J. Y., Hwang, J. S., Jun, J. W. and Choi, S. H., 2008, "Nondestructive Testing and Crack Evaluation of Ferromagnetic Material by Using the Linearly Integrated Hall Sensor Array," J. Mech. Sci. Tech, accepted
  9. Lee, J. Y., Choe, W. H., Kim, M. S., Kim, D. J. and Kang, M. P., 2004, "Magnetic Flux Density Apparatus for, E.G., Detecting an Internal Crack of a Metal or a Shape of the Metal," US patents 6,683,452 B2
  10. Hwang, J. S. and Lee, J. Y., 2006, "Modeling of a Scan Type Magnetic Camera Image Using the Improved Dipole Model," J. Mech. Sci. Tech., Vol. 20, No. 10, pp. 1691~1701 https://doi.org/10.1007/BF02916273
  11. Lee, J. Y. and Hwang, J. S., 2006, "The Detection Probability Improvement of the Far-side Crack on the High Lift-off Using the magnetic Camera," Int. J. of Mod. Phys. B, Vol. 20, Nos. 25, 26, & 27, pp. 4631~4636 https://doi.org/10.1142/S021797920604180X
  12. Lee, J. Y. and Hwang, J. S., 2006, "The QNDE Using Image Processing of the Magnetic Camera," Int. J. of Mod. Phys. B, Vol. 20, Nos. 25, 26, & 27, pp. 4625~4630 https://doi.org/10.1142/S0217979206041793
  13. Lee, J. Y., Hwang, J. S., Choi, S. H. and Lim, J. K., 2006, "Detection Probability Improvement for Nondestructive Evaluation Using a Magnetic Camera," Key Engineering Materials, Vols. 241~246, pp. 306~308
  14. Choi, S. H., Hwang, J. S., Jun, J. W., Lee, J. Y. and Kim, C. W., 2007, "Improvement of Crack Detection Probability by Using Magnetic Camera and Image Processing," Key Engineering Materials, Vols. 353~358, pp. 2375~2378 https://doi.org/10.4028/www.scientific.net/KEM.353-358.2375
  15. Jun, J. W., Hwang, J. S., Kim, K. J., Ogawa, K. and Lee, J. Y., 2007, "Development of Signal Processing Circuit of a Magnetic Camera for the NDT of a Paramagnetic Material," Key Engineering Materials, Vols. 353~358, pp. 2379~2382 https://doi.org/10.4028/www.scientific.net/KEM.353-358.2379
  16. Jun, J. W., Lee, J. Y. and Park, D. K., 2007, "NDT of a Nickel Coated Inconel Specimen Using by the Complex Induced Current-Magnetic Flux Leakage Method and Linearly Integrated Hall Sensor Array," J. of KSNT, Vol. 27, pp. 375~382

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  1. Damage Monitoring of Rolling Contact Fatigue in Wheel Specimen for High Speed Train Using Electro-Magnetic Sensor vol.29, pp.6, 2012, https://doi.org/10.7736/KSPE.2012.29.6.600