Influence of load cycle asymmetry on the fatigue resistance of ÉP202 and VNS-25 alloys at different loading frequencies
Autor: | D. G. Kofto, A. A. Khlyapov, A. V. Voinalovich, L. E. Matokhnyuk |
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Rok vydání: | 1990 |
Předmět: | |
Zdroj: | Strength of Materials. 22:1215-1221 |
ISSN: | 1573-9325 0039-2316 |
DOI: | 10.1007/bf00767756 |
Popis: | The results of investigation of the influence of load cycle frequency and asymmetry, test base, and stress concentration on the fatigure limit of EP202 nickelbase alloy and VNS-25 maraging steel are presented. It is shown that in symmetric apd asymmetric loadings the effective stress concentration factors do not depend upon loading frequency. It is established that the diagrams of limiting amplitudes to relative coordinates approximate the results of tests by common curves with the same parameters for all loading frequencies. |
Databáze: | OpenAIRE |
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