原文传递
Fatigue Behavior of Railcar Wheel Steel at Ambient and Elevated Temperature.
| 题名： | Fatigue Behavior of Railcar Wheel Steel at Ambient and Elevated Temperature. |
| 作者： | MCKEIGHAN, P.; MCMASTER, F. |
| 关键词： | FATIGUE TESTS; RAILROAD CARS; STEELS; WHEELS |
| 摘要： | This report presents the results of a material property test program undertaken on a Class B railcar wheel steel. This work was performed to obtain relevant fatigue data that may be used in support of a larger effort exploring the applicability of fatigue-based acceptance criteria for passenger and transit railroad wheels. Classical stress-life (S-N) curves were developed for AAR Class B railcar wheel steel with specimens removed from the tread area of an as-forged railcar wheel. The specimen geometry was a standard hourglass fatigue test specimen with a low stress concentration (Kt) of 1.05. Fatigue testing was performed at stress ratios of 1.0, 0.05, 0.5, and 0.7. Testing was performed at ambient, 500 deg F, and 1000 deg F using high current resistance or convection methods. Endurance limit data was obtained for all Rratios, although for the 1000 deg F condition there did not appear to be a clear endurance limit transition. These endurance limit data were used to estimate the Sines parameters, A and alpha. |
| 报告类型： | 科技报告 |
相关文献
- Fatigue Behavior of AAR (Association of American Railroads) Class A Railroad Wheel Steel at Ambient and Elevated Temperatures. Final rept.
- Tensile Properties and Fatigue Behavior of Geopolymer Matrix Composites with Carbon Fiber Reinforcement at Elevated Temperature.
- Detection of Microcracks in Concrete Cured at Elevated Temperature.
- Effects of Temperature on Bridge Dynamic Properties.
- Effects of Temperature on Bridge Dynamic Properties.
- A millimeter-wave radiometer for detecting microbursts
检索历史
应用推荐
