FATIGUE CRACK PROPAGATION IN FERRITE-PEARLITE RAILWAY WHEELS

J.M.Rodriguez Ibabe  M.Fuentes Pérez  J. Gil Sevillano      

Anales de la Mecánica de la Fractura, nº 1 . 1984 . Pág. 102 -102
Ver (.pdf): Anales01-020

Resumen: An extensive experimental study of the fatigue crack propagation in the steel of typical UIC R7 grade railway wheel (a hot rolled, rim quenched, O,5%C plain carbon steel wheel has been carried. - Crack propagation rates in stage II are nearly unaffected by the quantitative microstructural variations 01' by the degree of structural anisotropy encountered in the wheel. A minor but significant influence of load ratio, E, has been found. The results confirm most previously published data on ferrite-pearlite structures and provide un upper-bound for crack propagation rates that is currently used at CEIT to predict in-service lifes of wheels under thermomechanical loading.

LocalizaciónSigüenza

CEIT (Centro de Estudios e Investigaciones Técnicas de Guipúzcoa), San Sebastián.
CEIT (Centro de Estudios e Investigaciones Técnicas de Guipúzcoa), San Sebastián.
CEIT (Centro de Estudios e Investigaciones Técnicas de Guipúzcoa), San Sebastián.