Sociedad Española de Integridad Estructural
Grupo Español de Fractura

Sociedad Española de Integridad Estructural
Grupo Español de Fractura

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PREVISÃO DE VIDA À FADIGA DE UM COMPONENTE FERROVIÁRIO BASEADA NAS FUNÇÕES DA DISTRIBUIÇÃO CUMULATIVA NORMAL ESTANDARDIZADA DA TENSÃO EQUIVALENTE

T. L. Morgado  C. M. Branco  V. Infante      

Anales de la Mecánica de la Fractura, nº 27 . 2010 . Pág. -
Ver (.pdf): 75

Resumen: This article is presented a methodology for calculate fatigue life prediction taking into account the S-N curves for 50% and 90% reliabilities and the standardized equivalent stress–time histories of a railway component. This component, called railway coupling, is obtained by steel casting with ASTM specification A148 90-60, and is used on freight trains. The principal function of this component is the coupling between the first wagon and locomotive and between the different wagons. This railway structural piece is subject to varying amplitudes uploads and premature cracking problems. Data were obtained using strain gauges rosettes in service, in a load wagons routine travel. Fatigue life predictions, in years, were calculated for the determinate critical zones. The present methodology was tested on nominal zone and the result of fatigue life prediction was calculated.

LocalizaciónPorto

Instituto de Ciência e Engenharia de Materiais e Superfícies Departamento de Engenharia Mecânica do Instituto Politécnico de Tomar.(Portugal)
Instituto de Ciência e Engenharia de Materiais e Superfícies Departamento de Engenharia Mecânica, Instituto Superior Técnico da Universidade Técnica de Lisboa, Portugal
Instituto de Ciência e Engenharia de Materiais e Superfícies Departamento de Engenharia Mecânica, Instituto Superior Técnico da Universidade Técnica de Lisboa, Portugal




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