| Title | Sleeve expansion of bolt holes in railroad rail. volume III - field experiment results |
|---|---|
| Record ID | 48916 |
| Personal Name Creator |
Lindh, D. V.; Taylor, R. Q.; Rose, D. M. |
| Source | 112p. in various pagings |
| Corporate Creator | John A. Volpe National Transportation Systems Center (U.S.); Boeing Company. Commercial Airplane Division for 1992- |
| Corporate Contributor |
United States. Department of Transportation. Federal Railroad Administration |
| Publisher | United States. Dept. of Defense |
| Publication Date | 19980201 |
| Language | English |
| Abstract | The bolt-hole cold-expansion process has been demonstrated by laboratory tests to significantly affect the initiation and propagation of fatigue cracks from rail bolt holes such that a reduction of the incidence of rail-bolt-holde failure in cold-expanded rail would be expected. A field-verification experiment was implemented in 1977 and reported in volume I of this report. This volume contains the results of the field experiment, an examination of the effect of fatigue ration (R) on the observed laboratory fatigue-life improvement of cold-expanded bolt holes, an investigatin of crack growth of rails in a vacum environment, and a comparison of the fatigue performance of cold-expanded bolt holes with rail flashwelds. |
| Rosap ID | dot:10404 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/10404 |
| TRT Terms | Cracking; Vacuum; Bolts; Cold working; Compressive strength; Defects; Extrusion; Fatigue cracking; Fatigue strength; Fatigue tests; Fracture mechanics; Holes; Joints; Railroad rails; Rail joints; Railroad tracks; Welding; Work hardening |
| General Subjects | Logistics; Cold expansion; crack; fatigue; Mandrel; Rail bolt hole; Sleeve; Flashwelds; Vacuum; Crack growth rate |
| Classification | NTL - SAFETY AND SECURITY - Rail Safety; NTL - SAFETY AND SECURITY - SAFETY AND SECURITY; NTL - SAFETY AND SECURITY - Vehicle Design |
| Geographical Coverage |
United States |
| Contract Number | DOT-TSC-1048-3 |
| Report Number | FRA/ORD-80/5, III; DOT-TSC-FRA-5-III |
| Resource type | Tech Report |
| URL | https://ntlrepository.blob.core.windows.net/lib/48000/48900/48916/Sleeve_expansion_of_bolt_holes_in_railroad_rail_v-3.pdf |
| Format | |
| Database | NTL Digital Repository |