Experimental 3-D residual stress measurement in rails with thermal annealing

Wang, B.; Zheng, T.; Wu, S.; Chiang, F. P.

i

Experimental 3-D residual stress measurement in rails with thermal annealing

1999-07-01
By Wang, B. ; Zheng, T. ; Wu, S.

File Language:

English

Details

Creators:

Wang, B. ; Zheng, T. ; Wu, S. ; Chiang, F. P.
Corporate Contributors:

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
Subject/TRT Terms:
Publication/ Report Number:

DOT-VNTSC-FRA-99-8 ; DOT/FRA/ORD-99/04
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final report Jan 1997
Corporate Publisher:

United States. Federal Railroad Administration. Office of Research and Development
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.
Format:

PDF
Funding:

R-9052/RR-919
Download URL:

https://rosap.ntl.bts.gov/view/dot/8458/dot_8458_DS1.pdf
File Type:

[PDF - 4.51 MB]
Collection(s):

Volpe Center ; Federal Railroad Administration
Main Document Checksum:

urn:sha-512:e8e1810521f434fe3554e3c7f60bc098ea6279ebf78ede24aaf55c2b48c9c3193b824977a02dd22b228af5093c111be8c4a85db03bf62c6cc410b0bc15e5f037

File Language:

English

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