Using Magnetic Barkhausen Noise Technology and Finite Element Method to Study the Condition of Continuous Welded Rails on Darwin -- Alice Springs Line, Australia

The Magnetic Barkhausen Noise (MBN) technology is a non-destructive method to measure the neutral temperature of the continuous welded rails (CWR) track. A series of in-field verifications and data comparison on Australian mainline tracks have shown the results from that system are highly accurate and reliable. The system can be an accuracy and cost-effective tool to prevent the potential buckling and break of CWR rails. The physical backgrounds and features of the system is represented in this paper. The Darwin "C" Alice Springs Line is a newly constructed main line in Australia which is linked from the North and middle of Australia. Originally, this rail line is designed and constructed in a "cost-effective" way to a lower price, and the key parameters are relatively low. To maintain the stability of the CWR tracks in a very harsh environment, some new technologies such as the magnetic Barkhausen noise (MBN) technology were utilized. From the results of neutral temperature, it is found that the majority of them are very high. Combined with the calculation and finite element analysis, these problems evidenced that it is caused by the low toe load fastening system and high sleeper spacing. After that some suggestions are given to improve the stability of the CWR on the railway line.

Language

  • English

Media Info

  • Media Type: DVD
  • Features: Figures; Photos; References; Tables;
  • Pagination: 26p
  • Monograph Title: TRB 89th Annual Meeting Compendium of Papers DVD

Subject/Index Terms

Filing Info

  • Accession Number: 01157132
  • Record Type: Publication
  • Report/Paper Numbers: 10-3991
  • Files: TRIS, TRB
  • Created Date: Jan 25 2010 12:02PM