Laserstrukturierung von Metalloberflächen für Hybridverbindungen

Spancken, Dominik; Straeten, Kira van der; Beck, Jonas; Stötzner, Norbert

doi:10.1007/s35725-018-0031-1

Cited by 5 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Research is also currently being conducted into twodimensional procedures such as press joining with and without prestructuring [31,32]. Methods using a laser beam for the joining process were a particular focus in [33,34].…”

Section: Joining To Hybrid Componentsmentioning

confidence: 99%

Development of a new joining technology for hybrid joints of sheet metal and continuous fiber-reinforced thermoplastics

Krassmann

Moritzer

2021

Weld World

View full text Add to dashboard Cite

Punctiform mechanical joining technologies, such as riveting, clinching, or screwing, which are widely used in sheet metal processing, are frequently applied because they have been established for many years. Depending on the process, they offer a variety of advantages such as one-sided accessibility, re-detachability, and no need for pre-punching operations or auxiliary joining elements. In addition, the processes often guarantee a high process reliability and extensive process monitoring. However, with thermoplastic composites, they lead to considerable stress concentrations at the joint due to the fibers. Undesirable fiber and inter-fiber breaks then result. With the development of the novel joining technology of joint stamp riveting, an improvement is achieved in this situation that has been described for hybrid joints on components made of thermoplastic composites and metal sheets. The joining principle is based on the formation of a form lock between the joining partners. The thermoplastic composite is thermomechanically formed by means of a joint stamp without using an auxiliary joining element. Within the scope of a research project, the joining process was characterized with regard to the structure of the joining spot, the geometry of the forming tools, and also the mechanical properties for purposes of analyzing and designing the joining process.

show abstract

Section: Joining To Hybrid Componentsmentioning

confidence: 99%

Development of a new joining technology for hybrid joints of sheet metal and continuous fiber-reinforced thermoplastics

Krassmann

Moritzer

2021

Weld World

View full text Add to dashboard Cite

show abstract

“…In recent years, laser-based direct thermal joining has emerged as a promising technology for joining thermoplastics and metals. With this joining technology, fast process times and low costs can be achieved without the need for additional elements as with screws, or complex process chains as with adhesive bonding [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Towards a Model-Based Approach for the Optimization of the Mechanical and Economical Properties of Laser-Based Plastic-Metal Joints

Berges

Straeten

Jacobs

et al. 2022

KEM

Self Cite

View full text Add to dashboard Cite

The application of laser-structured metal surfaces to combine plastics and metals is a promising option to enable low-cost lightweight and resource-efficient multi-material joints. The mechanical properties (especially strength), as well as production time and costs, depend on the microstructure of the metal surface (e.g. the number, distance and shape of cavities). Thus, in order to design optimal joints, the properties from the mechanical, as well as production and cost domain, must be considered simultaneously during product development. Therefore, in this paper, a model-based optimization approach is presented with the goal of identifying an optimum between the strength of the joint and laser manufacturing costs. Parameterized models for the strength estimation, as well as calculation of laser manufacturing time and costs, are developed. The models are linked in an optimization workflow and the optimum positioning and shape of the cavities on the joining zone is determined using a genetic optimization algorithm. The results show that, compared to a benchmark, the manufacturing costs can be reduced by 82 % for the same strength using the proposed model-based optimization approach.

show abstract

“…One promising joining technology for plastic and metal is thermal direct joining using a laser-structured metal surface. Laser-based thermal direct joining technology offers advantages over conventional joining technologies, as a high strength can be achieved, without having a complex process chain, as with adhesives, or requiring additional elements, such as bolts [ 4 , 5 , 6 ]. The cycle time, costs, and weight can be reduced compared to conventional joining processes.…”

Section: Introductionmentioning

confidence: 99%

Model-Based Estimation of the Strength of Laser-Based Plastic-Metal Joints Using Finite Element Microstructure Models and Regression Models

et al. 2021

Self Cite

View full text Add to dashboard Cite

Plastic-metal joints with a laser-structured metal surface have a high potential to reduce cost and weight compared to conventional joining technologies. However, their application is currently inhibited due to the absence of simulation methods and models for mechanical design. Thus, this paper presents a model-based approach for the strength estimation of laser-based plastic-metal joints. The approach aims to provide a methodology for the efficient creation of surrogate models, which can capture the influence of the microstructure parameters on the joint strength. A parametrization rule for the shape of the microstructure is developed using microsection analysis. Then, a parameterized finite element (FE) model of the joining zone on micro level is developed. Different statistical plans and model fits are tested, and the predicted strength of the FE model and the surrogate models are compared against experiments for different microstructure geometries. The joint strength is predicted by the FE model with a 3.7% error. Surrogate modelling using half-factorial experimental design and linear regression shows the best accuracy (6.2% error). This surrogate model can be efficiently created as only 16 samples are required. Furthermore, the surrogate model is provided as an equation, offering the designer a convenient tool to estimate parameter sensitivities.

show abstract

Laserstrukturierung von Metalloberflächen für Hybridverbindungen

Cited by 5 publications

References 0 publications

Development of a new joining technology for hybrid joints of sheet metal and continuous fiber-reinforced thermoplastics

Development of a new joining technology for hybrid joints of sheet metal and continuous fiber-reinforced thermoplastics

Towards a Model-Based Approach for the Optimization of the Mechanical and Economical Properties of Laser-Based Plastic-Metal Joints

Model-Based Estimation of the Strength of Laser-Based Plastic-Metal Joints Using Finite Element Microstructure Models and Regression Models

Contact Info

Product

Resources

About