Abstract
In order to investigate the effect of variable loading on fretting fatigue in the very high cycle region for chromium-molybdenum steel, very high cycle fretting fatigue tests under variable loading were conducted by using an ultrasonic torsional fatigue testing machine. The variable amplitude condition was composed of two stress amplitudes which were higher and lower than the fretting fatigue strength at 108 cycles under constant loading. The experimental results revealed that an applied stress amplitude in variable loading lower than the fretting fatigue strength at 108 cycles under constant loading was detrimental if the amplitude was higher than 80% of the fretting fatigue strength at 108 cycles under constant loading.
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This research program is financially supported by Chubu Electric Power Co., Inc.
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Nomura, K., Tonooka, N., Shimamura, Y., Ishii, H., Fujii, T., Tohgo, K. (2020). Effect of Variable Loading on Very High Cycle Fretting Fatigue of Chromium-Molybdenum Steel. In: Murakami, RI., Koinkar, P., Fujii, T., Kim, TG., Abdullah, H. (eds) NAC 2019. Springer Proceedings in Physics, vol 242. Springer, Singapore. https://doi.org/10.1007/978-981-15-2294-9_13
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DOI: https://doi.org/10.1007/978-981-15-2294-9_13
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