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RESEARCH PRODUCT
ΔJ-integral range estimation for fatigue crack growth rate description
G. GasiakDariusz Rozumeksubject
Materials sciencebusiness.industryStress ratioPlane (geometry)Mechanical EngineeringBendingStructural engineeringMechanicsParis' lawCrack growth resistance curveIndustrial and Manufacturing EngineeringCrack closureMechanics of MaterialsModeling and SimulationEmpirical formulaRange (statistics)General Materials Sciencebusinessdescription
Abstract The paper presents an equation for fatigue crack growth rate description taking into account the ΔJ-integral range, which was verified experimentally for variable bending. Plane, notched specimens were tested under unilaterally restrained bending for different values of stress ratio R. The results of tests and numerical calculations were presented as characteristics of fatigue crack growth rate. It has been shown that in the case of a change of stress ratio from R=−1.0 to R=0.0, the crack rate increases twice for 10HNAP steel and five times for 18G2A steel. The empirical formula presented in the paper describes well the test results of fatigue crack rate in the steels.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2004-02-01 | International Journal of Fatigue |