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MARCH 2012 (published: 01.03.2012)
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The connection between the diagram of fatigue fracture and the fatigue curve
Krysin A.G., Pelenko V.V., Prokopenko A.V., Hutyz A.M., Stepkov V.M.
The method of recalculation of curve endurance in the fatigue failure diagram is theoretically developed. The method consists in the decision of system of three equations of number of cycles of destruction of the sample at the different levels of an alternating voltage defined by integration of dependence growth rate of a crack – factor of intensity of pressure, and reception of three unknown – threshold factor of intensity of pressure and two parameters of the equation of Parisa.
Method check under the data published in the literature on endurance and crack resistancesteels at cyclic loadinghas shown suitability of a method for practical calculations. Method use allows to raise informativefatigue tests and to receive a great number of the additional information by results of considerable number of the spent experimental researches of fatigue durability of materials.
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thediagram, the intensity of loading, crack.
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