Induction Spot Welding of Metal/<scp>CFRPC</scp> Hybrid Joints

Mitscháng, Peter; Velthuis, Rudi; Didi, Mirja

doi:10.1002/adem.201200273

Cited by 90 publications

(47 citation statements)

References 14 publications

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“…Single-lap joints presented a characterization of the bonding mechanisms and the influence of the surface treatments. The previous described test series showed that the pre-treatment of the metallic joining partner by corundum blasting and the application of additional polymer in the joining zone have positive influence on the shear tensile strength [24]. A join of metal (steel DC01 and aluminium AlMg3) and CFRPC (organic sheets CF-PA66 and CF-PEEK) is developed by means of induction heating.…”

Section: Introductionmentioning

confidence: 99%

Hot Press Joining Optimization of Polyethylene to Aluminium Alloy AA6061-T6 Lap Joint Using Design of Experiments

Hussein¹,

Mhessan²,

Alwan³

2017

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Abstract. The hot press method is used to join a poly-ethylene plate of thickness 4 mm with an aluminium alloy AA6061-T6 plate of thickness 1.5 mm. A preanodizing process is crucial for the success of such joint. The anodizing was performed under a current density of 200 A/m 2 , temperature 24°C, sulphuric acid 5 wt. % and for a 60 minutes. Three period parameters were considered in the hot pressing process; temperature: 115 and 135°C, pressure: 2, 6, and 10 bar and pressing time: 1, 2, 3, 4 and 5 minutes. The joint specimens are tested by shear tensile test, microstructure, energy dispersive spectrometry, differential scanning calorimetric and thermo grvanometric analysis. The results of shear tensile were analyzed using design of experiments. Minimum and maximum shear tensile force were found at temperature T = 115°C where; F min = 680N and F max = 2800N. From Pareto chart, the applied pressure had the most significant effect on the shear tensile force of the joint specimens compared to temperature and joining time. The main effect plot showed that optimum value of shear tensile force was obtained at joining conditions of T = 135°C, P = 6 bar and t = 3 minutes. The tested specimens exhibited an interfacial shear failure, extension and necking in the region of polymer with a ductile fracture. The mechanical interlocking of polymer element in the anodizing surface is approximately 15 µm. The melting point and glass transmission temperature of PE are decreased after the hot press.

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Section: Introductionmentioning

confidence: 99%

Hot Press Joining Optimization of Polyethylene to Aluminium Alloy AA6061-T6 Lap Joint Using Design of Experiments

Hussein¹,

Mhessan²,

Alwan³

2017

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“…O aprimoramento das técnicas de união disponíveis, bem como o desenvolvimento de novas técnicas de união, são motivos de intensa pesquisa [7][8][9][10][11][12][13].…”

Section: Influência Da Espessura Do Filme Polimérico Intermediário Naunclassified

“…Analogamente à tecnologia weld-bonding, Mitschang et al [13] investigaram a adição de filmes intermediários poliméricos a juntas híbridas metal-compósito unidas por indução. Durante o processo de união o filme termoplástico é amolecido e reconsolidado, fornecendo forças adesivas à junta.…”

Section: Influência Da Espessura Do Filme Polimérico Intermediário Naunclassified

“…Utilizando-se de uma estratégia similar daquela do estudo realizado por Mitschang et al [13], André et al [21] demonstraram a viabilidade técnica de se produzir juntas de AA2024-T3/CF-PPS com filme intermediário de PPS através da União Pontual por Fricção. Durante o processo de união o filme intermediário é fundido e recristalizado, intensificando as forças adesivas na junta.…”

Section: Influência Da Espessura Do Filme Polimérico Intermediário Naunclassified

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Influência da Espessura do Filme Polimérico Intermediário na Resistência Mecânica de Juntas Híbridas de Alumínio 2024-T3 e CF-PPS Produzidas por União Pontual por Fricção

et al. 2016

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Este é um artigo publicado em acesso aberto (Open Access) sob a licença Creative Commons Attribution Non-Commercial, que permite uso, distribuição e reprodução em qualquer meio, sem restrições desde que sem fins comerciais e que o trabalho original seja corretamente citado. ). Para o filme mais fino, a extensão do amolecimento devido ao calor friccional é maior. Consequentemente, a baixa viscosidade atingida com a fusão do polímero favorece a molhabilidade das superfícies dos componentes da junta pelo PPS amolecido, resultando em melhor adesão entre as partes. Ademais, análises microestruturais demonstraram que a formação do cerne metálico e a interdifusão das moléculas de PPS entre compósito e filme também são favorecidas. Portanto, concluiu-se que a adição do filme mais fino produziu juntas mais resistentes. Palavras-chave:União pontual por fricção; Estruturas híbridas; Filme intermediário; Resistência mecânica. Influence of the Interlayer Film Thickness on the Mechanical Performance of AA2024-T3/CF-PPS Hybrid Joints Produced by Friction Spot JoiningAbstract: Friction Spot Joining (FSpJ) is an innovative friction-based joining technique for metalpolymer hybrid structures. Friction spot joints of aluminum alloy 2024-T3 and carbon-fiber reinforced poly(phenylene sulfide) composite laminate (CF-PPS) were produced with an additional PPS film interlayer. Two different film thicknesses were investigated in this study: 100 and 500 µm. Lap shear testing demonstrated that the joints produced with 100 µm film (2093 ± 180 N) were stronger than the joints with 500 µm (708 ± 69 N). Additionally, the fracture surface analysis revealed a larger bonding area for the joints with 100 µm film (53 ± 2 mm 2 ) as compared to the joints with 500 µm film (40 ± 1 mm 2 ). Considering the low thermal conductivity of PPS, the thinnest film is more likely to soften by the frictional heat during the joining process. Hence, the low viscosity of the molten PPS favors the wettability of the parts' surface. Microstructural analyses proved that the metallic nub formation and the interdiffusion of PPS chains between film and composite matrix are also favored for thinner film use. Thus, superior adhesion between the partners is achieved. Therefore, it was concluded that the addition of the thinnest film interlayer leads to stronger joints.

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“…Consequently, direct PEEK-metal bonding is necessary. Welding has been proposed for direct polymer-metal bonding [11]. However, the process temperature is higher than the melting temperature of PEEK, which may damage MEMS devices and cause severe problems via differential thermal expansion.…”

mentioning

confidence: 99%

Low Temperature Direct Bonding between PEEK (Polyetheretherketone) and Pt via Vapor-Assisted Vacuum Ultraviolet Surface Modification

Fu¹,

Shigetou²,

Shoji³

et al. 2017

JMSE-B

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Direct bonding between PEEK (polyetheretherketone) and Pt was achieved at 150 °C via a vapor-assisted VUV (vacuum ultraviolet) surface modification method. X-ray photoelectron spectroscopy confirmed that the PEEK and Pt outer surfaces were modified with hydrate bridge layers. A model calculation of gas content during VUV irradiation suggested that the water vapor molar concentration should be optimized to no more than 0.088 mol/m 3 . The strain energy release rate calculation indicated that the energy required to debond the PEEK-Pt interface reached 270 mN/m, which was higher than the energy required to break the bulk PEEK (42 mN/m). SEM observation of fractured PEEK-Pt bonding agreed well with the calculation result that the fracture occurred within PEEK substrate. Thus, the PEEK-Pt bonding was considered strong enough. This technology is expected to be applied in biomedical MEMS applications.

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Induction Spot Welding of Metal/CFRPC Hybrid Joints

Cited by 90 publications

References 14 publications

Hot Press Joining Optimization of Polyethylene to Aluminium Alloy AA6061-T6 Lap Joint Using Design of Experiments

Hot Press Joining Optimization of Polyethylene to Aluminium Alloy AA6061-T6 Lap Joint Using Design of Experiments

Influência da Espessura do Filme Polimérico Intermediário na Resistência Mecânica de Juntas Híbridas de Alumínio 2024-T3 e CF-PPS Produzidas por União Pontual por Fricção

Low Temperature Direct Bonding between PEEK (Polyetheretherketone) and Pt via Vapor-Assisted Vacuum Ultraviolet Surface Modification

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