| Title | Experimental 3-D residual stress measurement in rails with thermal annealing |
|---|---|
| Record ID | 15779 |
| Personal Name Creator |
Wang, B.; Zheng, T.; Wu, S.; Chiang, F. P. |
| Source | 168p. in various pagings |
| Corporate Contributor |
John A. Volpe National Transportation Systems Center (U.S.); State University of New York at Stony Brook. Experimental Mechanics Research Laboratory; United States. Department of Transportation. Federal Railroad Administration. Office of Research and Development |
| Publisher | United States. Federal Railroad Administration. Office of Research and Development |
| Publication Date | 19990700 |
| Language | English |
| Abstract | This report describes a novel method to determine residual stresses in railroad rails. The method uses thermal annealing to relieve the internal stresses in rail slices while advanced techniques (Miore and Twyman/Green interferometry) are applied to measure the deformation of rail slices during a stress relief process which is accomplished by thermal annealing (heat treatment). The rail slices are approximately 1/4 inch thick. Two slices from the same general location on a rail are used in this method. One splice is cut in the transverse plane and another in a 45 degree oblique plane. The 3-D residual stresses are then reconstructed from the deformation measurements by applying basic assumptions and principles. In this report, the thermal annealing method was applied to five different rails to examine the effect of rail grinding on rail performance. |
| Rosap ID | dot:8458 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/8458 |
| TRT Terms | Annealing; Rail grinding; Residual stress; Railroad rails |
| General Subjects | Annealing; Grinding(Material removal); Interferometry; Numerical analysis; Railroad tracks; Residual stress; Temper annealing |
| Classification | NTL - RAIL TRANSPORTATION - RAIL TRANSPORTATION; NTL - RAIL TRANSPORTATION - Rail Safety; NTL - SAFETY AND SECURITY - Rail Safety |
| Geographical Coverage |
United States |
| TRIS Online Accession No |
782223 |
| Contract Number | R-9052/RR-919 |
| Report Number | DOT-VNTSC-FRA-99-8; DOT/FRA/ORD-99/04 |
| Availability | Volpe National Transportation Systems Center, Technical Reference Center |
| Resource type | Tech Report |
| URL | https://ntlrepository.blob.core.windows.net/lib/15000/15700/15779/PB2000100810.pdf |
| Format | |
| Database | NTL Digital Repository |