Potential of Laser-manufactured Polymer-metal hybrid Joints

Bergmann, Jean Pierre; Stambke, Martin

doi:10.1016/j.phpro.2012.10.017

Cited by 105 publications

(52 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…14. At the joint interface, the interlocking has occurred by means of filling cavities of melted polymer as a result of heat and pressure [30]. The main benefit of anodizing is reducing the activation energy required to initiate bonding mechanisms under the Vander Waals action [31].…”

Section: Scanning Electron Microscope and Optical Microscope Testmentioning

confidence: 99%

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

Hussein¹,

Mhessan²,

Alwan³

2017

View full text Add to dashboard Cite

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.

show abstract

Section: Scanning Electron Microscope and Optical Microscope Testmentioning

confidence: 99%

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

Hussein¹,

Mhessan²,

Alwan³

2017

View full text Add to dashboard Cite

show abstract

“…In this regard, the surface pretreatments such as OF LASER APPLICATIONS VOLUME 27, NUMBER S2 FEBRUARY 2015 grinding, 13 milling, 2 abrasive blasting (AB), 7 and laser processing [8][9][10][11] are applied prior to bonding. One of the most promising processes is the laser surface pretreatment, which results in a joint strength for adhesive bonds equal to anodizing and etching processes.…”

Section: B Laser Surface Pretreatment For the Metal Joining Partnermentioning

confidence: 99%

Laser surface pre-treatment of aluminum for hybrid joints with glass fiber reinforced thermoplastics

Heckert

Zaeh

2015

Journal of Laser Applications

View full text Add to dashboard Cite

Lightweight construction is a major trend in the automotive industry. The connection of fiber reinforced plastics with aluminum is consequently seen as a promising prospect. In this regard, thermal joining is one potential joining technology for bonding of such hybrid joints. Yet a pretreatment of the aluminum surface is necessary to create a load bearing metal-plastic joint. Recent research has shown that a laser surface pretreatment provides high joint strengths. However, there is a variety of laser sources and possible surface topographies with typical structure sizes ranging from macroscopic to nanoscopic profiles. Within this work, two different laser induced structures were generated on aluminum sheets which were subsequently joined to glass fiber reinforced thermoplastics. One of the two laser structures was created with a continuous wave laser using a modified remote ablation cutting process. The other structure was manufactured by a pulsed laser source with a pulse width in the nanosecond-range. The two laser processes were compared with a conventional abrasive blasting process and they were characterized in terms of surface topography and chemical composition of the surface. Furthermore, the achievable joint strength for joining with glass fiber reinforced thermoplastics was investigated. It is shown that the properties of the thermoplastic as well as the surface topography and chemical composition of the metal strongly influence the resulting joint strength.

show abstract

“…Katayama and Kawahito [3] investigated direct laser heating of the interface zone using transparent polymer. Bergmann and Stambke [4] used indirect laser heating of 2 of 15 the metal component. Mitschang et al [5] presented an inductive joining process.…”

Section: Introductionmentioning

confidence: 99%

“…Consequently, a high number of studies is focused on the relation between the surface structure and the interlaminar strength. Pan et al [9], Bergmann and Stambke [4] as well as Saborowski et al [10] investigated corundum blasting with various abrasive particle sizes. Their results indicate that larger particle sizes slightly increase the interlaminar strength.…”

Section: Introductionmentioning

confidence: 99%

Introducing Fractal Dimension for Interlaminar Shear and Tensile Strength Assessment of Mechanically Interlocked Polymer-Metal-Interfaces

Saborowski¹,

Steinert²,

Dittes³

et al. 2020

Preprint

View full text Add to dashboard Cite

The interlaminar strength of mechanically interlocked polymer-metal-interfaces is strongly dependent on the surface structure of the metal component. Therefore, this contribution assesses the suitability of the fractal dimension for quantification of the surface structure as well as interlaminar strength prediction of aluminum/polyamide 6 polymer-metal-hybrids. Seven different surface structures, manufactured by blasting, combined blasting and etching, thermal spraying and laser ablation, are investigated. The experiments are carried out on a novel butt-bonded hollow cylinder testing method that allows shear and tensile strength determination with one specific specimen geometry. The fractal dimension of the metal surfaces is derived from cross-sectional images. For comparison, the surface roughness slope is determined and related to the interlaminar strength. Finally, a fracture analysis is conducted. For the investigated material combination, the experimental results indicate that the fractal dimension is an appropriate measure for predicting the interlaminar strength.

show abstract

Potential of Laser-manufactured Polymer-metal hybrid Joints

Cited by 105 publications

References 2 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

Laser surface pre-treatment of aluminum for hybrid joints with glass fiber reinforced thermoplastics

Introducing Fractal Dimension for Interlaminar Shear and Tensile Strength Assessment of Mechanically Interlocked Polymer-Metal-Interfaces

Contact Info

Product

Resources

About