期刊
INTERNATIONAL JOURNAL OF FATIGUE
卷 138, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijfatigue.2020.105726
关键词
Ultrasonic fatigue testing; Frequency effect; Control type effect; 50CrMo4; SAE 4150
资金
- Federal Ministry of Economics and Technology
- German Federation of Industrial Research Associations 'Otto von Guericke' e.V. (BMWi/AiF) [324ZN, 18198N]
- Forschungskuratorium Maschinenbau e.V. (FKM)
- German Federation of Industrial Research Associations 'Otto von Guericke' e.V. (AiF) [18198N]
In this paper, we investigate the influence of the control type of cyclic tests on the lifetime of the specimens tested. We present a strain rate dependent method to compare results of displacement controlled fatigue tests to results of force controlled fatigue tests. This method is successfully used to explain longer lifetimes observed in ultrasonic fatigue tests compared to conventional fatigue tests on specimens manufactured from quenched and tempered SAE 4150. This method may also be used to normalize displacement controlled fatigue tests in conventional testing, which allows parallel testing of multiple specimens in a single testing machine.
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