Fatigue crack growth of rails for railways

• Tipo: Artigo em Revista Científica Internacional
• Data: 2003

Autores

Lucas Filipe da Silva (Autor) FEUP; D. J. Stewardson (Autor) Outra; F. M. F. de Oliveira (Autor) Outra; paulo M. S. tavares de Castro (Autor) FEUP

Revista

Título: Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit

Vol. 217 Nº 2

Páginas: 89-97

ISSN: 0954-4097

Editora: SAGE

Indexação

ISI Web of Knowledge - 4 Citações

Scopus - 8 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia civil

Outras Informações

ID Authenticus: P-000-KFM

DOI: 10.1243/095440903765762832

Abstract (EN): Fatigue crack growth rates of rails from four European rail manufacturers are presented. The tests performed, on which the present paper is based, are part of the contribution to a project on the fatigue crack growth rate qualifying criteria of rails for railways-SMT4-CT98-2240-partfunded by the European Union. Six different laboratories were involved in measuring the scatter in fatigue crack growth rates. The tests were carried out under a stress ratio of 0.5, with test temperature and relative humidity recorded but not controlled beyond the ambient laboratory condition. The cyclic test frequency was either 10 or 15 Hz. The crack length was measured manually (optical microscope) which requires interruptions to the test overnight. Statistical analysis revealed that interruptions to tests may cause interference with the results. The data were analysed by three procedures: formal methods used were the secant method and the seven-point incremental polynomial technique; in addition, statistical analysis of a more investigative type using running regressions was utilized. It was found that there was no significant difference between the crack growth rate in samples from four different manufacturers.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9