| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Harrison, David Keith
Glasgow Caledonian University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2022Comprehensive study on the influence of different pretreatment methods and structural adhesives on the shear strength of hybrid CFRP/aluminum jointscitations
- 2022Adhesively bonded CFRP/Al joints: influence of the surface pretreatment on corrosion during salt spray testcitations
- 2022Laser surface treatment of carbon fiber reinforced polymer using near-infrared laser wavelength with variated process parameterscitations
- 2022Individual process development of single and multi-material laser melting in novel modular laser powder bed fusion systemcitations
- 2021Laser polishing of Laser Powder Bed Fusion AlSi10Mg parts—influence of initial surface roughness on achievable surface qualitycitations
- 2021Prozessparameter-Abhängigkeiten im kontinuierlichen und gepulsten Laserbetriebsmodus beim Oberflächenpolieren von additiv gefertigten Aluminiumbauteilen (AlSi10Mg)citations
- 2020Laser-based surface treatment of CFRP and aluminum for adhesively bonded hybrid jointscitations
- 2017Material removal simulation for steel mould polishingcitations
- 2016Simulation of material removal in mould polishing for polymer optic replication
- 2013Precision mould manufacturing for polymer opticscitations
- 2007Part strength analysis of Shell Assisted Layer Manufacturing (SALM)
- 2006Process energy analysis for aluminium alloy and stainless steel in laser-assisted jet electrochemical machiningcitations
- 2005Enhancing the formability of aluminium components via temperature controlled hydroformingcitations
- 2004Modelling and experimental investigation of laser assisted jet electrochemical machiningcitations
Places of action
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document
Laser-based surface treatment of CFRP and aluminum for adhesively bonded hybrid joints
Abstract
Carbon fiber reinforced polymer (CFRP) offers the highest potential for lightweight applications due to its excellent weight to strength ratio in comparison to other materials. However, it is cost-intensive and therefore rarely used monolithically. This makes pretreatment and joining processes so important. Hybrid connections of CFRP and metals can be made by riveting, bolting, stir joining and by adhesive. For adhesive bonding, a pretreatment of the materials is necessary. A laser pretreatment has the advantage, that it is automatable and contactless. This paper deals with the pretreatment of CFRP with different laser wavelengths in near-infrared (NIR, 1030 and 1064 nm) and ultraviolet (UV, 355 nm) range. The influence of the processing direction relative to the fiber layer and the influence of the energy density was investigated with a short pulsed NIR infrared laser. In addition, the influence of different surface structures on the mechanical strength was investigated. The treated CFRP surfaces were examined with a light microscope and a scanning electron microscope. The tensile shear strengths were determined using CFRP and aluminum substrates, joined with a 2-part epoxy adhesive. As a comparison, UV laser treated specimens were also mechanically tested. An ultra-short pulsed NIR laser system was used to generate periodic structures on the CFRP to maximize the surface area without fiber damage and breakage. The investigations on the influence of the machining direction with NIR relative to the fiber layer showed insignificant differences in shear strengths. The variation of the energy density showed an influence on the ablation behavior of the CFRP matrix and the mechanical strength. The maximum strength with a cohesive failure in the adhesive was achieved with optimized short pulsed NIR laser parameter.