Fatigue Crack Growth Simulation in Railway Axles

Antonio De Iorio; Marzio Grasso; F. Penta; G. P. Pucillo

doi:10.4028/www.scientific.net/KEM.488-489.407

Paper Titles

Bone-Cement Interface Micromechanical Model under Cyclic Loading
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Comparison of Solutions of Stress Field Based on Hertzian and Combined Numerical-Crystallographic Approaches Beneath Nanoindenter
p.395

Influence of Boundary Conditions on Higher Order Terms of Near-Crack-Tip Stress Field in a WST Specimen
p.399

Valuation of TMF Lifetime Calculation Methods and their Limitations of Usability
p.403

Fatigue Crack Growth Simulation in Railway Axles
p.407

Effect on the Alkali-Activator Mixing Ratio of Geopolymer Mortar Using Bottom Ash
p.411

Crack Propagation from Bi-Material Notches – Matched Asymptotic Procedure
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Evaluation of the Fatigue Resistance of Chromium Slurry Coating Steel Substrate Compounds by Means of an Improved Impact Testing Procedure
p.420

Stress Responses to Large Simple Shear Deformation in Elasticity Based on the Logarithmic Strain
p.424

HomeKey Engineering MaterialsKey Engineering Materials Vols. 488-489Fatigue Crack Growth Simulation in Railway Axles

Fatigue Crack Growth Simulation in Railway Axles

Abstract:

In order to carry out the railway axle design according to the “Damage Tolerance” philosophy, reliable crack-growth models for these kind of components are necessary. Indeed, damage tolerance principles have received more and more attention from railway technical community, thanks to its ambitious task concerning the inspection intervals prevision of railway components subjected to non-stationary loading conditions. In this paper, a simple routine is exposed that is able to calculate the characteristic parameters of the Linear Elastic Fracture Mechanics (LEFM) for a generic cracked mechanical component. Such parameters are then used in a two parameters propagation law to estimate the necessary time for a crack to become critical.