Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/4194
DC FieldValueLanguage
dc.contributor.authorBorrego, L. P.-
dc.contributor.authorPires, J. T. B.-
dc.contributor.authorCosta, J. M.-
dc.contributor.authorFerreira, J. M.-
dc.date.accessioned2008-09-01T10:43:43Z-
dc.date.available2008-09-01T10:43:43Z-
dc.date.issued2007en_US
dc.identifier.citationEngineering Failure Analysis. 14:8 (2007) 1586-1593en_US
dc.identifier.urihttp://hdl.handle.net/10316/4194-
dc.description.abstractThis 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.en_US
dc.description.urihttp://www.sciencedirect.com/science/article/B6V2X-4N2M6PH-1/1/945a7f442fb922704c73d665abcb0b02en_US
dc.format.mimetypeaplication/PDFen
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectMould producingen_US
dc.subjectLaser repairingen_US
dc.subjectWelded jointsen_US
dc.subjectFatigueen_US
dc.titleFatigue behaviour of laser repairing welded jointsen_US
dc.typearticleen_US
item.fulltextCom Texto completo-
item.grantfulltextopen-
item.languageiso639-1en-
crisitem.author.researchunitCentre for Mechanical Engineering-
crisitem.author.orcid0000-0003-0259-8926-
Appears in Collections:FCTUC Eng.Mecânica - Artigos em Revistas Internacionais
Files in This Item:
File Description SizeFormat
file787673f79ac84b71ab8b7c9659b66a4d.pdf578.24 kBAdobe PDFView/Open
Show simple item record

Page view(s) 20

532
checked on Sep 23, 2020

Download(s)

126
checked on Sep 23, 2020

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.