Multifractal scaling law for high-cycle fatigue strength applied to aluminum alloy

• Autorzy: Tomaszewski T. , Sempruch J.
• Języki publikacji: EN

Abstrakty

EN

Fatigue strength of the material decreases with an increase in the cross sectional area of the specimen. Such phenomenon can be described phenomenologically applying the fractal approach, describing a change in the strength properties by applying the fractal dimension. With that approach involves modelling the damage of a material ligament. The damage size depends on the defects and microfractures in the object analysed. The effect of the disordered material microstructure on the mechanical properties is decreasing with an increase in the cross sectional area of the object. Bearing that in mind, the description of the size effect should use nonlinear scaling (multifractal scaling law). That approach was used for the results of high-cycle fatigue studies, for various aluminum alloys. Determining the model parameters facilitates the evaluation of fatigue life and strength for the plants with a different geometry than the specimens studied in the lab.

Słowa kluczowe

EN

size effect; fractal approach; aluminum alloy

• Wydawca: Faculty of Ocean Engineering and Ship Technology, Gdańsk University of Technology
• Czasopismo: Journal of Polish CIMAC
• Rocznik: 2013
• Tom: Vol. 8, no 3
• Strony: 109--115
• Opis fizyczny: Bibliogr. 8 poz., wykr.

Twórcy

autor

Tomaszewski T.

• University of Technology and Live Sciences in Bydgoszcz ul. Kaliskiego 7, 85-796 Bydgoszcz, Poland tel.: [phone], fax: [phone]

autor

Sempruch J.

• University of Technology and Live Sciences in Bydgoszcz ul. Kaliskiego 7, 85-796 Bydgoszcz, Poland tel.: [phone], fax: [phone]

Bibliografia

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• [5] Carpinteri, A., Spagnoli, A., A fractal analysis of size effect on fatigue crack growth, International Journal of Fatigue 28, pp. 125-133, 2004.
• [6] Hyler, W. S., Lewis, R. A., Grover, H. J., Experimental investigation of notch-size effects on rotating-beam fatigue behaviour of 75S-T6 aluminum alloy, NACA, pp. 1-48, 1954.
• [7] Tomaszewski, T., Sempruch, J., Determination of the fatigue properties of aluminum alloy using mini specimen, Materials Science Forum 726, pp. 63-68, Switzerland 2012.
• [8] Troshchenko, V. T., Sosnovskiy, L. A., Fatigue resistance of metals and alloys, Academy of Sciences of the Ukrainian SSR [in Russian], 1987.