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Comparing the adhesion strength of 316L stainless steel joints after laser surface texturing by CO2 and fiber lasers

Mandolfine, Chiara orcid logoORCID: 0000-0002-0210-8483, Ahmed Obeidi, Muhannad orcid logoORCID: 0000-0003-2733-3828, Lertoral, Enrico orcid logoORCID: 0000-0002-6097-3184 and Brabazon, Dermot orcid logoORCID: 0000-0003-3214-6381 (2020) Comparing the adhesion strength of 316L stainless steel joints after laser surface texturing by CO2 and fiber lasers. The International Journal of Advanced Manufacturing Technology, 109 . pp. 1059-1069. ISSN 2252-0406

Abstract
This paper focuses on the effects of the laser surface texturing process and joint configuration of stainless steel adherends on the adhesive tensile bond strength. Two different sources, a CO2 and a fiber laser, were used and compared. In particular, proper choice of laser parameters was explored with the aim of producing different roughness and peak-to-valley distance and different textures on the bonding area, which could increase the real contact surface. Furthermore, to more thoroughly understand the effect of the laser parameters on joint fracture load, the experimental campaign was conducted according to a Design of Experiment (DoE) framework and the results were analyzed with this methodology. The creation of particular textures and roughness levels were related to the resulting joint geometrical configuration and bond strengths. In particular, significant increases in joint bond strength were achieved using both laser sources. Furthermore, by optimizing the laser parameters, smaller laser spot scan path overlaps can be achieved as well as a more refined scale of surface texture and surface roughness. This thereby enables the joining of thinner sections of different materials.
Metadata
Item Type:Article (Published)
Refereed:Yes
Uncontrolled Keywords:Fiber laser; CO2 laser; Stainless steel; Adhesive bonding; Surface texture; Laser surface roughening; Statistical analysis
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://doi.org/10.1007/s00170-020-05639-6
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 (SFI) under grant number 16/RC/3872, European Regional Development Fund
ID Code:26107
Deposited On:12 Aug 2021 11:31 by Dermot Brabazon . Last Modified 12 Aug 2021 11:31
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