Utilize este identificador para referenciar este registo:
https://hdl.handle.net/10316/4194
Título: | Fatigue behaviour of laser repairing welded joints | Autor: | Borrego, L. P. Pires, J. T. B. Costa, J. M. Ferreira, J. M. |
Palavras-chave: | Mould producing; Laser repairing; Welded joints; Fatigue | Data: | 2007 | Citação: | Engineering Failure Analysis. 14:8 (2007) 1586-1593 | Resumo: | This paper presents a fatigue study in Nd-YAG laser surface repairing welded joints in specimens of two base materials used in mould production. The tests were carried out in a servo-hydraulic machine in tension, under constant amplitude loading, with two stress ratios R = 0 and R = 0.4. Welded specimens were prepared with U notches and filled with laser welding deposits. The fatigue results are presented in the form of S-N curves obtained in welded and non-welded conditions. Complementary measurements of hardness and residual stresses profiles were carried out along the surface of laser welded specimens to understand the observed fatigue behaviour. The melted material was the weaker region, with lower values of hardness and higher tensile residual stresses, presenting also a high number of defects that are potential failure sites. The presence of such defects can explain the relatively poor fatigue strength of the laser repairing joints in comparison to base materials. | URI: | https://hdl.handle.net/10316/4194 | DOI: | 10.1016/j.engfailanal.2006.11.054 | Direitos: | openAccess |
Aparece nas coleções: | FCTUC Eng.Mecânica - Artigos em Revistas Internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
file787673f79ac84b71ab8b7c9659b66a4d.pdf | 578.24 kB | Adobe PDF | Ver/Abrir |
Citações SCOPUSTM
24
Visto em 29/abr/2024
Citações WEB OF SCIENCETM
21
Visto em 2/mai/2024
Visualizações de página 20
701
Visto em 30/abr/2024
Downloads
342
Visto em 30/abr/2024
Google ScholarTM
Verificar
Altmetric
Altmetric
Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.