| Journal: | Journal of the Brazilian Society of Mechanical Sciences |
| Database: | PERIÓDICA |
| System number: | 000312065 |
| ISSN: | 0100-7386 |
| Authors: | Ferreira, J.L.A1 Freire, J.L.F2 |
| Institutions: | 1Universidade de Brasilia, Departamento de Engenharia Mecanica, Brasilia, Distrito Federal. Brasil 2Pontificia Universidade Catolica do Rio de Janeiro, Departamento de Engenharia Mecanica, Rio de Janeiro. Brasil |
| Year: | 2001 |
| Volumen: | 23 |
| Number: | 4 |
| Pages: | 533-543 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico |
| English abstract | Reliable predictions of remaining lives of civil or mechanical structures subjected to fatigue damage are very difficult to be made. In general, fatigue damage is extremely sensitive to the random variations of material mechanical properties, environment and loading. These variations may induce large dispersions when the structural fatigue life has to be predicted. Wirsching (1970) mentions dispersions of the order of 30 to 70 % of the mean calculated life. The presented paper introduces a model to estimate the fatigue damage dispersion based on known statistical distributions of the fatigue parameters (material properties and loading). The model is developed by expanding into Taylor series the set of equations that describe fatigue damage for crack initiation |
| Disciplines: | Ingeniería, Matemáticas |
| Keyword: | Ingeniería de materiales, Matemáticas aplicadas, Materiales, Propiedades, Fatiga, Confiabilidad, Vida útil, Predicción, Modelos matemáticos |
| Keyword: | Engineering, Mathematics, Materials engineering, Applied mathematics, Materials, Properties, Fatigue, Reliability, Useful life, Prediction, Mathematical models |
| Full text: | Texto completo (Ver HTML) |
