Macroscopic Surface Structures for Polymer-metal Hybrid Joints Manufactured by Laser Based Thermal Joining

Schricker, Klaus; Stambke, Martin; Bergmann, Jean Pierre; Bräutigam, Kevin; Henckell, Philipp

doi:10.1016/j.phpro.2014.08.086

Cited by 41 publications

(16 citation statements)

References 6 publications

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“…Some papers were also devoted to presenting the laser-micropatterning technique, used as a novel tool to enhance micromechanical adhesion between metal and polymer, subjected to overmolding by injection [16,17]. Rodríguez-Vidal et al [18,19] extensively studied the results of the application of various surface geometries produced by laser metal microstructuring and operating in two diverse modes of the laser beam.…”

Section: Introductionmentioning

confidence: 99%

Deformation Mechanism in Mechanically Coupled Polymer–Metal Hybrid Joints

et al. 2020

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In this, work, metal inserts were joined with polyamide 6 by using the injection-molding technique. The metal parts, made of steel grade DC 04, were mechanically interlocked with polyamide 6 (PA6) by rivets as a mechanical connection between both components in the form of s polymer filling the holes in the metallic parts. The mechanical-interlocking joints made of steel/PA6 were mechanically tested in a tensile-lap-shear test. The damage behavior of the joined materials in relation to rivet number and position on the metal plate was studied. The observation of rivet deformation was also conducted by infrared IR thermography. The study showed that, for polymer–metal joined samples with fewer than three rivets, the destruction of rivets by shearing meant sample damage. On the other hand, when the polymer–metal joint was made with three or four rivets, the disruption mechanism was mostly related to the polymer part breaking. The maximal values of the joint’s failure force under tensile-shear tests were achieved for samples where three rivets were used. Moreover, strong correlation was found between the surface temperature of the samples and their maximal force during the tensile-lap-shear test.

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Section: Introductionmentioning

confidence: 99%

Deformation Mechanism in Mechanically Coupled Polymer–Metal Hybrid Joints

et al. 2020

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“…Laser-based joining has been put forth as an alternative to adhesives [ 16 , 17 ]. However, as this joining process requires specific joining conditions such as an initial surface treatment [ 18 ] and the application of pressure [ 19 ], complex structures for, e.g., sophisticated lightweight applications cannot be processed by using this technique.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Approaches for Selective Laser Sintering by Building on Dissimilar Materials

2020

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We introduced a new approach in selective laser sintering for hybrid multicomponent systems by fabricating the sintered polyamide 12 (PA12) part directly onto a similar (PA12) or dissimilar (polyamide 6 (PA6) and tool steel 1.2709) joining partner. Thus, the need for adhesive substances or joining pressure was completely circumvented, leading to the possibility of pure hybrid lightweight bi-polymer or metal–polymer systems. By taking advantage of the heating capabilities of the sinter laser regarding the substrate surface, different exposure strategies circumvented the lack of overlapping melting temperatures of dissimilar polymers. Therefore, even sintering on non-PA12 polymers was made possible. Finally, the transfer on metallic substrates—made up by selective laser melting (SLM)—was successfully performed, closing the gap between two powder-based additive processes, selective laser sintering (SLS) and SLM.

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“…The load carrying capacity of hybrid composites strongly depends on the strength of the interface between the materials. Concerning this matter various studies have shown that a combination between direct adhesion and mechanical interlocking can significantly improve the interface strength [6,7]. In the scope of this paper the novel approach for producing an intrinsic hybrid composite is presented.…”

Section: Introductionmentioning

confidence: 99%

Process development and tooling design for intrinsic hybrid composites

Riemer

Müller

Drossel

et al. 2017

J. Phys.: Conf. Ser.

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View the article online for updates and enhancements. Abstract. Hybrid parts, which combine the advantages of different material classes, are moving into the focus of lightweight applications. This development is amplified by their high potential for usage in the field of crash relevant structures. By the current state of the art, hybrid parts are mainly made in separate, subsequent forming and joining processes. By using the concept of an intrinsic hybrid, the shaping of the part and the joining of the different materials are performed in a single process step for shortening the overall processing time and thereby the manufacturing costs. The investigated hybrid part is made from continuous fibre reinforced plastic (FRP), in which a metallic reinforcement structure is integrated. The connection between these layered components is realized by a combination of adhesive bonding and a geometrical form fit. The form fit elements are intrinsically generated during the forming process. This contribution regards the development of the forming process and the design of the forming tool for the single step production of a hybrid part. To this end a forming tool, which combines the thermo-forming and the metal forming process, is developed. The main challenge by designing the tool is the temperature management of the tool elements for the variothermal forming process. The process parameters are determined in basic tests and finite element (FE) simulation studies. On the basis of these investigations a control concept for the steering of the motion axes and the tool temperature is developed. Forming tests are carried out with the developed tool and the manufactured parts are analysed by computer assisted tomography (CT) scans. IntroductionGrowing requirements regarding the product performance and the product costs are the key drivers for the development of new materials. The main product requirements in the field of the transportation industry are the lowering of the fuel consumption and the emissions of pollutants [1]. To reach these aims different lightweight concepts are widely used [2]. One concept is the use of hybrid materials. These materials are made of different material classes to combine the advantages of the used materials [3]. In the field of transportation industries the combination of metal sheets with fibre reinforced plastic (FRP) offers the fusion of good static mechanical properties of FRPs with the advantageous behaviour of metals under high dynamic loads [4]. Such materials are commonly known as hybrid metal composites. A drawback for the widely use of this material class is the sophisticated and expensive manufacturing process. To reduce the cycle times and therefore the manufacturing costs, the concept of intrinsic hybrid composites has been developed [5]. Within this approach the forming and the

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Macroscopic Surface Structures for Polymer-metal Hybrid Joints Manufactured by Laser Based Thermal Joining

Cited by 41 publications

References 6 publications

Deformation Mechanism in Mechanically Coupled Polymer–Metal Hybrid Joints

Deformation Mechanism in Mechanically Coupled Polymer–Metal Hybrid Joints

Hybrid Approaches for Selective Laser Sintering by Building on Dissimilar Materials

Process development and tooling design for intrinsic hybrid composites

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