The authors researched the effects of specimen size on the very high cycle fatigue properties of FV520B-I through ultrasonic fatigue testing. The test results showed that the very high cycle fatigue mechanism was not changed and the fatigue properties declined as the specimen size increased. The S-N curve moved downward and the fatigue life decreased under the same stress level maybe due to the heat effects of large specimens in tests. The fatigue strength and the fatigue life were predicted by relevant models. The prediction of fatigue strength was close to test result, and the prediction of fatigue life was less effective compared with the previous prediction of small size specimen test results.
- Pressure Vessels and Piping Division
The Effects of Specimen Size on the Very High Cycle Fatigue Properties of FV520B-I
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Zhang, M, Wang, W, & Li, A. "The Effects of Specimen Size on the Very High Cycle Fatigue Properties of FV520B-I." Proceedings of the ASME 2015 Pressure Vessels and Piping Conference. Volume 5: High-Pressure Technology; Rudy Scavuzzo Student Paper Competition and 23rd Annual Student Paper Competition; ASME NDE Division. Boston, Massachusetts, USA. July 19–23, 2015. V005T09A015. ASME. https://doi.org/10.1115/PVP2015-45934
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