| Title | Evaluation of Elber's Crack Closure Model as an Explanation of Train Load Sequence Effects on Crack Growth Rates |
|---|---|
| Record ID | 50252 |
| Personal Name Creator |
Jeong, David Y.; Sih, G. C. |
| Source | 27p. in various pagings |
| Corporate Creator | John A. Volpe National Transportation Systems Center (U.S.); Lehigh University |
| Corporate Contributor |
United States. Department of Transportation. Federal Railroad Administration |
| Publisher | United States. Department of Transportation. Federal Railroad Administration |
| Publication Date | 19900601 |
| Language | English |
| Abstract | Elber's crack closure model is studied in relation to the results of laboratory spectrum crack growth tests on compact tension specimens (CTS) fabricated from rail effected by mean of an analysis of a center cracked panel (CCP) subjected to an equivalent stress spectrum. (The model cannot be directly applied to the CTS because it is numerically unstable when supplied with finite element approximations for the elastic displacement field at the plastic zone boundary.) The trends of the model predictions and test results agree as to the effect of changing cycle order in the spectrum, but the actual effect on crack growth life in the laboratory tests is found to be much stronger than the effect predicted by Elber's model. |
| Rosap ID | dot:11644 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/11644 |
| TRT Terms | Cracking; Evaluation; Mechanical fatigue; Mathematical models; Railroad rails; Rates; Sealing; Wheel loads |
| Classification | AGR - INFRASTRUCTURE - Railroads; NTL - RAIL TRANSPORTATION - RAIL TRANSPORTATION; NTL - RAIL TRANSPORTATION - Rail Safety; NTL - SAFETY AND SECURITY - Rail Safety; NTL - SAFETY AND SECURITY - Vehicle Design; NTL - SAFETY AND SECURITY - SAFETY AND SECURITY |
| Geographical Coverage |
United States |
| Report Number | DOT/FRA/ORD-90/06; DOT-TSC-FRA-90-1 |
| Resource type | Tech Report |
| URL | https://ntlrepository.blob.core.windows.net/lib/50000/50200/50252/DOT-TSC-FRA-90-1.pdf |
| Format | |
| Database | NTL Digital Repository |