Analytical-experimental method of determining fatigue characteristics for design elements

• Autorzy: Strzelecki P. , Sempruch J.
• Języki publikacji: EN

Abstrakty

EN

Frequently during the initial designing stage, one must use fatigue characteristics of the design element. Producing such a plot by making an experiment is not possible at most times. This paper suggests determining such characteristics based on the fatigue plot for the material. The assumptions of that method have been developed drawing on own experiment and experimental data presented in literature. The name ‘analytical and experimental’ assigned to the method proposed comes from the fact that it is based on the description of the fatigue properties of the material received experimentally and phenomenological properties received experimentally presented in literature. In order to verify the method proposed, a comparative plot was made for the experimental and analytical fatigue life. Based on the curve plotted, one can demonstrate that the fatigue life predicted according to own proposal range in the assumed scatter band. For the purpose of a comparison, developing the fatigue characteristics according to the FITNET method. As for this algorithm, it was found that the fatigue limit determined according to this method is much greater than the one received experimentally, which means that the method does not work for materials heavily sensitive to the effect of the notch, including e.g. material C45+C.

Słowa kluczowe

EN

high-cycle fatigue strength; fatigue curves; analytical methods of estimating Wöhler's curve

• Wydawca: Faculty of Ocean Engineering and Ship Technology, Gdańsk University of Technology
• Czasopismo: Journal of Polish CIMAC
• Rocznik: 2012
• Tom: Vol. 7, no 3
• Strony: 285--292
• Opis fizyczny: Bibliogr. 14 poz., rys., tab.

Twórcy

autor

Strzelecki P.

autor

Sempruch J.

• University of Technology and Life Sciences; Faculty of Mechanical Engineering ul. Prof. S. Kaliskiego 7, 85-789 Bydgoszcz tel.: [phone],

Bibliografia

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• [10] Sempruch J., Strzelecki P., Error of fatigue life determination according to the FITNET method. 17th International Conference Engineering Mechanics, 2011, pp. 531-534.
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• [12] Strzelecki P., Sempruch J., Verification of selected methods for rapid determination of Wehler curve considering high-cycle fatigue, Journal of Polish Cimac Selected problems of designing and operating technical systems, Vol. 5 No 3, 2010; ss. 177.
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