Experimental Study of Residual Stresses in Rail by Moire Interferometry

Details

• Creators:
  Wang, Y. Y. ; Chiang, F. P.
• Corporate Creators:
  State University of New York at Stony Brook. Experimental Mechanics Research Laboratory
• Corporate Contributors:
  John A. Volpe National Transportation Systems Center, (U.S.) ; United States. Federal Railroad Administration. Office of Research and Development
• Subject/TRT Terms:
  • Deformation
  • Interferometry
  • Rail (Railroads)
  • Residual stress
  • Rolling resistance
• Publication/ Report Number:
  DOT-FRA-ORD-94-02 ; DOT-VNTSC-FRA-93-24
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  United States. Federal Railroad Administration
• NTL Classification:
  AGR-INFRASTRUCTURE-Railroads ; NTL-SAFETY AND SECURITY-Vehicle Design ; NTL-SAFETY AND SECURITY-Marine Safety ; NTL-RAIL TRANSPORTATION-RAIL TRANSPORTATION ; NTL-RAIL TRANSPORTATION-Rail Safety
• Abstract:
  The residual stresses in rails produced by rolling cycles are studied experimentally by moire interferometry. The dissection technique is adopted for this investigation. The basic principle of the dissection technique is that the residual stress is released elastically by creating free boundaries when the specimen is cut into small pieces. In the study, instead of cutting small pieces, the rail was first cut into thin slices, and grooves were then cut on the surface of the slice to produce many small grid elements with right angles. When the elements are small enough, it is assumed that the edges of the element are the stress free boundaries and thus relax the residual stress near the surface of the slice. The resulting deformation is measured by moire interferometry.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/11407/dot_11407_DS1.pdf
• File Type:
  [PDF - 3.79 MB]
• Collection(s):
  Volpe Center
• Main Document Checksum:
  urn:sha256:8723ea2fcbe24aa68dab1715a22b597f87aa81ab2e9ac28d797e7046c14fce69