Publicação
Fatigue crack propagation along interfaces of selective laser melting steel hybrid parts
| dc.contributor.author | Santos, Luis M.S. | |
| dc.contributor.author | Ferreira, José A.M. | |
| dc.contributor.author | Borrego, Luis P. | |
| dc.contributor.author | Costa, Jose D. | |
| dc.contributor.author | Capela, Carlos | |
| dc.contributor.author | Jesus, Joel de | |
| dc.date.accessioned | 2026-01-21T18:49:36Z | |
| dc.date.available | 2026-01-21T18:49:36Z | |
| dc.date.issued | 2019-06-11 | |
| dc.description.abstract | Selective laser melting (SLM) is an emerging additive manufacturing technology, capable of producing complex geometry components. The current work studied both the effect of substrate material and mean stress on the fatigue crack growth behaviour along interfaces of bi‐material specimens, substrate, and part by SLM. Fatigue tests were carried out in agreement with ASTM E647 standard, using 6‐mm‐thick compact specimens. The substrate steel has only a negligible effect both on the fatigue crack propagation rate and on the crack path. The failure occurs in the material additively manufactured by SLM, near the interface. The mean stress produced only a reduced influence on the fatigue crack propagation rate in the Paris regime. For larger values of ΔK, where Kmax approaches KIc, a significant influence of the mean stress was observed. In spite of nondetection of crack closure, the application of overloads promoted significant fatigue crack retardation, quite similar for both substrate materials, probably due to the crack bifurcation during the overload. | eng |
| dc.description.sponsorship | The authors would like to acknowledge the sponsoring under the project number 016713 (PTDC/EMS‐PRO/1356/2014) financed by Project 3599 Promover a Produção Científica e Desenvolvimento Tecnológico e a Constituição de Redes Temáticas (3599‐PPCDT) and FEDER funds and also EROFIO S.A. industry for the supply of the testing samples. | |
| dc.identifier.citation | Santos LMS, Ferreira JAM, Borrego LP, Costa JD, Capela C, de Jesus J. Fatigue crack propagation along interfaces of selective laser melting steel hybrid parts. Fatigue Fract Eng Mater Struct. 2019; 42: 2431–2440. https://doi.org/10.1111/ffe.13072 | |
| dc.identifier.doi | 10.1111/ffe.13072 | |
| dc.identifier.issn | 8756-758X | |
| dc.identifier.issn | 1460-2695 | |
| dc.identifier.uri | http://hdl.handle.net/10400.8/15451 | |
| dc.language.iso | eng | |
| dc.peerreviewed | yes | |
| dc.publisher | Wiley | |
| dc.relation.hasversion | https://onlinelibrary.wiley.com/doi/10.1111/ffe.13072 | |
| dc.relation.ispartof | Fatigue & Fracture of Engineering Materials & Structures | |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | |
| dc.subject | additive manufacturing | |
| dc.subject | compact (tension) specimens | |
| dc.subject | crack paths | |
| dc.subject | crack propagation | |
| dc.subject | fatigue | |
| dc.title | Fatigue crack propagation along interfaces of selective laser melting steel hybrid parts | eng |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.endPage | 2440 | |
| oaire.citation.issue | 11 | |
| oaire.citation.startPage | 2431 | |
| oaire.citation.title | Fatigue Fract Eng Mater Struct. | |
| oaire.citation.volume | 42 | |
| oaire.version | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |
| person.familyName | Capela | |
| person.givenName | Carlos | |
| person.identifier.ciencia-id | 9B1E-6857-3D6B | |
| person.identifier.orcid | 0000-0003-3334-4945 | |
| person.identifier.rid | G-6395-2016 | |
| person.identifier.scopus-author-id | 7801358401 | |
| relation.isAuthorOfPublication | 9b079aa3-b79b-4395-b081-1f23d6a17514 | |
| relation.isAuthorOfPublication.latestForDiscovery | 9b079aa3-b79b-4395-b081-1f23d6a17514 |