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A. De Iorio et alii, Frattura ed Integrità Strutturale, 26 (2013) 57-68 ; DOI: 10.3221/IGF-ESIS.26.07 68 A CKNOWLEDGEMENTS he supply of materials by Manoir Industries Outreau (France) is greatly appreciated. R EFERENCES [1] Jeong, D.Y., Correlations between rail defect growth data and engineering analyses, Part I: Laboratory tests, UIC/WEC Joint Research Project on Rail Defect Management. U.S. Department of Transportation (2003). [2] Ravaee, R., Hassani, A., Fracture mechanics determinations of allowable crack size in railroad rails, J Fail. Anal. and Preven., 7 (2007) 305–310. [3] Seo, J. W., Kwon, S. J., Lee, D. H., Kwon, S. T., Choi, H. Y., Fatigue crack growth and fracture behavior of rail steels, Int. J. of Railway, 5(3) (2013) 129-134. [4] De Iorio, A., Grasso, M., Kotsikos, G., Penta, F., Pucillo, G. P., Development of predictive models for fatigue crack growth in rails, Key Engineering Materials, 488-489 (2012) 13-16. [5] UNI EN 13674-1:2011, Railway applications - Track - Rail - Part 1: Vignole Railway Rails 46 kg/m and above. [6] ISO 1099:2006, Metallic Materials - Fatigue Testing - Axial Force-Controlled method. [7] ISO 12106:2003 Metallic materials - Fatigue testing - Axial-strain-controlled method. [8] ASTM E399-09e2, Standard test method for linear-elastic plane-strain fracture toughness K Ic of metallic materials. [9] BS-ISO 12108:2002, Metallic Material - Fatigue Testing - Fatigue crack growth method. [10] ASTM E 647: Standard test method for measurement of fatigue crack growth rates, USA, (2011). [11] De Iorio, A., Grasso, M., Penta, F., Pucillo, G.P., A three-parameter model for fatigue crack growth data analysis, Frattura ed Integrità Strutturale, 21 (2012) 21-29. T