| Journal: | Journal of the Brazilian Society of Mechanical Sciences and Engineering |
| Database: | PERIÓDICA |
| System number: | 000312154 |
| ISSN: | 1678-5878 |
| Authors: | Fassani, R.N.S1 Trevisan, O.V2 |
| Institutions: | 1Universidade Estadual de Campinas, Departamento de Engenharia de Fabricacao, Campinas, Sao Paulo. Brasil 2Universidade Estadual de Campinas, Departamento de Engenharia de Petroleo, Campinas, Sao Paulo. Brasil |
| Year: | 2003 |
| Season: | Jul-Sep |
| Volumen: | 25 |
| Number: | 3 |
| Pages: | 302-305 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico |
| English abstract | In the welding process, the most interesting regions for heat transfer analysis are the fusion zone (FZ) and the heat affected zone (HAZ), where high temperatures are reached. These high temperature levels cause phase transformations and alterations in the mechanical properties of the welded metal. The calculations to estimate the temperature distribution in multiple pass welding is more complex than in the single pass processes, due to superimposed thermal effects of one pass over the previous passes. In the present work, a comparison is made between thermal cycles obtained from analytical models regarding point (concentrated) and Gaussian (distributed) heat sources. The use of distributed heat source prevents infinite temperatures values near the fusion zone. The comparison shows that the thermal cycles obtained from the distributed heat source model are more reliable than those obtained from the concentrated heat source model |
| Disciplines: | Ingeniería |
| Keyword: | Ingeniería industrial, Ingeniería mecánica, Soldadura, Diseño de procesos, Modelos analíticos, Fuentes distribuidas, Proceso multipaso |
| Keyword: | Engineering, Industrial engineering, Mechanical engineering, Welding, Processes desing, Analytical models, Distributed sources, Multipass process |
| Full text: | Texto completo (Ver HTML) |
