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Experimental and empirical model analysis of microsurface texturing on 316 L press-fit joints fabricated by selective laser melting

Sohrabpoor, Hamed orcid logoORCID: 0000-0001-8473-5845, Taherzadeh Mousavian, Reza orcid logoORCID: 0000-0002-2274-3636, O'Halloran, Sinéad orcid logoORCID: 0000-0002-3484-9083, Benyounis, Khaled orcid logoORCID: 0000-0001-6599-4892, Baraheni, M., Ahmed Obeidi, Muhannad orcid logoORCID: 0000-0003-2733-3828, Ahad, Inam Ul orcid logoORCID: 0000-0002-3802-6156, Raghavendra, Ramesh orcid logoORCID: 0000-0002-5999-456X and Brabazon, Dermot orcid logoORCID: 0000-0003-3214-6381 (2020) Experimental and empirical model analysis of microsurface texturing on 316 L press-fit joints fabricated by selective laser melting. The International Journal of Advanced Manufacturing Technology, 108 . pp. 2687-2699. ISSN 0268-3768

Abstract
In this study, selective laser melting (SLM) was investigated for the manufacturing of 316L stainless steel press-fit joints. The accuracy of selective laser melting technique in fabrication of texture profile in shape, pitch and height of microsurface texturing was examined. The resulting insertion and removal forces achieved from the produced textured pins for cold-formed high-end fixation applications were studied. The experimental results showed that the shape, pitch and height of the texture, as well as the resultant bonding strength of the joints, can be effectively set via control of the SLM processing parameters. While trapezoidal and triangular shapes of the texture lead to stronger bonding compared with oval-shaped texture profiles, the texture height was found to have a predominant effect on bond strength. To a much lower extent, larger pitch distances also resulted in higher bond strengths. A combination of abrasive and adhesive wear mechanisms was detected via examination of the inner surface of the hub into which the press fit was inserted. Along with a process map of design of the microsurface texture geometry of metal interference fit joints, this paper also presents the underlying mechanics for their bonding. The SLM process is shown to present a useful one-step method for the manufacturing of knurl metallic interference fit pins of customisable and definable texture and ensuing bond strength.
Metadata
Item Type:Article (Published)
Refereed:Yes
Subjects:Engineering > Materials
Engineering > Mechanical engineering
Engineering > Production engineering
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Engineering and Computing > School of Mechanical and Manufacturing Engineering
Research Initiatives and Centres > Advanced Processing Technology Research Centre (APTRC)
Research Initiatives and Centres > I-Form
Publisher:Springer Verlag
Official URL:https://dx.doi.org/10.1007/s00170-020-05458-9
Copyright Information:© 2021 Springer
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
Funders:Science Foundation Ireland under Grant Number 16/RC/3872, European Regional Development Fund, I-Form industry partners, Irish Research Council Government of Ireland Scholarship
ID Code:26106
Deposited On:12 Aug 2021 09:31 by Dermot Brabazon . Last Modified 01 Mar 2022 13:31
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