Influence of the mold temperature on the material properties and the vibration welding process of crosslinked polyamide 66

2017 ◽  
Vol 58 (S1) ◽  
pp. E207-E214 ◽  
Author(s):  
Christoph Leisen ◽  
Michael Wolf ◽  
Dietmar Drummer
Keyword(s):  
Material Properties ◽  
Welding Process ◽  
Mold Temperature ◽  
Polyamide 66 ◽  
Vibration Welding

scholarly journals Joining of Incompatible Polymer Combinations by Form Fit Using the Vibration Welding Process

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Michael Wolf ◽  
Tobias Kleffel ◽  
Christoph Leisen ◽  
Dietmar Drummer
Keyword(s):  
High Density Polyethylene ◽  
Test Specimen ◽  
Welding Process ◽  
High Potential ◽  
Melting Points ◽  
Polyamide 66 ◽  
Shear Tests ◽  
Polymer Metal ◽  
Close Range ◽  
Vibration Welding

The production of components consisting of various polymer types by welding is severely restricted and only possible for bonding compatible materials with melting points in a close range. Several modifications, such as the cross-linking of one joining partner, allow for circumventing the restrictions regarding the melting points but do not help in joining bonding incompatible materials. Investigations of dissimilar material combinations, especially from polymer-metal hybrid structures, show a high potential of connections based on form fits. Within the scope of this paper, the possibility of joining incompatible polymer combinations, such as polyamide 66 and high-density polyethylene, by micro form fit using the vibration welding process is analyzed. For this purpose, the generated bonding strength of the test specimen was determined by shear tests. Furthermore, the undercuts of the generated prestructures and the resulting bond of the test specimen were examined microscopically by computer-tomography. These investigations depict the high potential of joining incompatible polymer combinations by form fit in the vibration welding using prestructuring to generate undercuts.

Influence of radiation cross-linking of polyamide 66 on the characteristics of the vibration welding process

2015 ◽  
Vol 55 (11) ◽  
pp. 2493-2499 ◽  
Author(s):  
Christoph Leisen ◽  
Markus Menacher ◽  
Dietmar Drummer
Keyword(s):  
Welding Process ◽  
Cross Linking ◽  
Polyamide 66 ◽  
Vibration Welding

Optimization of Welding Process Parameters in Novel Friction Stir Welding of Polyamide 66 Joints

2019 ◽  
Vol 969 ◽  
pp. 828-833 ◽  
Author(s):  
R. Nandhini ◽  
R. Dinesh Kumar ◽  
S. Muthukumaran ◽  
S. Kumaran
Keyword(s):  
Tensile Strength ◽  
Friction Stir Welding ◽  
Process Parameters ◽  
Welding Process ◽  
Polyamide 66 ◽  
Friction Stir ◽  
Response Characteristics ◽  
Tool Shoulder ◽  
Stereo Microscope ◽  
Friction Plate

The friction stir welding of polyamide 66 with a specially modified tool is studied. A variation of the conventional friction stir welding is investigated by incorporating a friction plate for the purpose of heating the polymer in the course of welding process through the tool shoulder. This in turn, improves the efficiency of the weld. The association of the welding process parameters and the weld performance has been investigated by the grey relational analysis with multi response characteristics like weld tensile strength, percent elongation and hardness. Macrostructure of the weld joint cross section has been explored by Stereo microscope. The maximum weld tensile strength of 63 MPa and a Shore hardness of 60 D at the weld nugget are obtained. The hardness profiles of the welded samples have been analyzed in this investigation.

Numerical Investigation on Weld-Induced Imperfections in Aluminum Ship Plates

2019 ◽  
Vol 141 (6) ◽  
Author(s):  
Bai-Qiao Chen ◽  
C. Guedes Soares
Keyword(s):  
Finite Element ◽  
Aluminum Alloy ◽  
Material Properties ◽  
Welding Process ◽  
Finite Element Models ◽  
Finite Element Analyses ◽  
Temperature Dependent ◽  
Military Applications ◽  
Structural Responses ◽  
Or In Military

The present work aims at better understanding and predicting the thermal and structural responses of aluminum components subjected to welding, contributing to the design and fabrication of aluminum ships such as catamarans, lifesaving boats, tourist ships, and fast ships used in transportation or in military applications. Taken into consideration the moving heat source in metal inert gas (MIG) welding, finite element models of plates made of aluminum alloy are established and validated against published experimental results. Considering the temperature-dependent thermal and mechanical properties of the aluminum alloy, thermo-elasto-plastic finite element analyses are performed to determine the size of the heat-affected zone (HAZ), the temperature histories, the distortions, and the distributions of residual stresses induced by the welding process. The effects of the material properties on the finite element analyses are discussed, and a simplified model is proposed to represent the material properties based on their values at room temperature.

Post-crosslinking behavior of radiation crosslinked polyamide 66 during vibration welding

2016 ◽  
Vol 56 (7) ◽  
pp. 735-742 ◽  
Author(s):  
Christoph Leisen ◽  
Andreas Seefried ◽  
Dietmar Drummer
Keyword(s):  
Polyamide 66 ◽  
Vibration Welding
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