High-speed joining of hybrid metal-polymer joints during the friction-assisted joining process

2021 ◽  
pp. 114890
Author(s):  
F. Lambiase ◽  
V. Grossi ◽  
A. Paoletti
Keyword(s):  
High Speed ◽  
Joining Process ◽  
Metal Polymer

Effect of the Field Shaper Geometries in Electromagnetic Crimping of Tubes on Rods

2019 ◽  
Vol 141 (11) ◽  
Author(s):  
Ramesh Kumar ◽  
Sachin D. Kore
Keyword(s):  
Experimental Study ◽  
High Speed ◽  
High Strain ◽  
Effective Length ◽  
Outer Diameter ◽  
Solenoid Coil ◽  
Element Analysis ◽  
Materials Properties ◽  
Inner Diameter ◽  
Joining Process

Abstract Electromagnetic crimping is a solid state, high-speed, and high strain-rate joining process. Finite element analysis, as well as experimental study, was carried out on three types of field shapers, namely, tapered, taper-stepped, and stepped. In all three field shapers, the effective length, outer diameter, inner diameter, total length, and materials properties were constant. These field shapers were kept inside the same multi-turn solenoid coil for all the experiments. It was found that the taper-stepped field shaper results better regarding impact velocity, Lorentz force, temperature generation, less heating, and uniformity in crimping among the three types of field shapers.

DAMPING PROPERTIES OF HYBRID LAYERED METAL-POLYMER MATERIALS BASED ON ALUMINUM, TITANIUM ALLOYS AND ORGANOPLASTICS LAYERS

2021 ◽  
pp. 10-19
Author(s):  
G.F. Zhelezina ◽  
◽  
A.S. Kolobkov ◽  
G.S. Kulagina ◽  
A.Ch. Kan ◽  
...  
Keyword(s):  
Volume Content ◽  
High Speed ◽  
Layered Materials ◽  
Polymer Materials ◽  
Damping Properties ◽  
Reinforcement Scheme ◽  
Damping Characteristics ◽  
Metal Sheets ◽  
Metal Layers ◽  
Metal Polymer

The damping characteristics of hybrid layered materials of the class «aluminum–organoplastics» and «titanium–organoplastics» based on metal sheets and layers of aramid organoplastics are studied. It is shown that the level of damping properties of hybrid layered materials is higher than that of the initial alloys and depends on the volume content of organoplastics, the location of organoplastics layers relative to metal layers, as well as on the reinforcement scheme. Hybrid layered materials are promising materials for the manufacture of high-speed aircraft structures operating under high vibroacoustic loads.

Friction Self-Piercing Riveting (F-SPR) of AA6061-T6 to AZ31B

2013 ◽  
Author(s):  
YongBing Li ◽  
ZeYu Wei ◽  
YaTing Li ◽  
ZhaoZhao Wang ◽  
Xiaobo Zhu
Keyword(s):  
Magnesium Alloys ◽  
Spot Welding ◽  
High Speed ◽  
Dissimilar Materials ◽  
Friction Stir Spot Welding ◽  
Friction Stir ◽  
Riveting Process ◽  
Solid State Joining ◽  
Joining Process ◽  
Vehicle Bodies

Implementation of lightweight low-ductility materials such as aluminum alloys, magnesium alloys and composite materials has become urgently needed for automotive manufacturers to improve the competitiveness of their products. However, the hybrid use of these materials poses big challenges to joining processes. Self-piercing riveting (SPR) is currently the most popular technique for joining dissimilar materials and has been widely used in joining all-aluminum and multi-material vehicle bodies. However, in riveting magnesium alloys, cracks always occur for its low ductility. In this paper, a hybrid joining process named friction self-piercing riveting (F-SPR), which combines mechanical joining mechanism of SPR with solid-state joining mechanism of friction stir spot welding (FSSW) by making rivet rotating at high speed in riveting process, was proposed aiming at joining the low ductility materials. 1-mm-thick AA6061-T6 and 2-mm-thick AZ31B were used to validate the effectiveness of the F-SPR process. The results showed that the F-SPR process could significantly improve the rivetability of magnesium alloys, and greatly increase the joint strength, comparing with traditional SPR process.

Friction Self-Piercing Riveting of Aluminum Alloy AA6061-T6 to Magnesium Alloy AZ31B

2013 ◽  
Vol 135 (6) ◽  
Author(s):  
YongBing Li ◽  
ZeYu Wei ◽  
ZhaoZhao Wang ◽  
YaTing Li
Keyword(s):  
Magnesium Alloys ◽  
Spot Welding ◽  
High Speed ◽  
Dissimilar Materials ◽  
Friction Stir ◽  
Magnesium Alloy Az31b ◽  
Riveting Process ◽  
Solid State Joining ◽  
Joining Process ◽  
Vehicle Bodies

Implementation of lightweight low-ductility materials such as aluminum alloys, magnesium alloys and composite materials has become urgently needed for automotive manufacturers to improve the competitiveness of their products. However, hybrid use of these materials poses big challenges to traditional joining process. Self-piercing riveting (SPR) is currently the most popular technique for joining dissimilar materials and has been widely used in joining all-aluminum and multimaterial vehicle bodies. However, in riveting magnesium alloys, cracks always occur for its low ductility. In this paper, a hybrid joining process named friction self-piercing riveting (F-SPR), which combines mechanical joining mechanism of SPR with solid-state joining mechanism of friction stir spot welding (FSSW) by making rivet rotating at high speed in riveting process, was proposed aiming at joining the low-ductility materials. The effectiveness of the F-SPR process was validated via riveting 1 mm thick AA6061-T6 and 2 mm thick AZ31B. The results showed that the F-SPR process could significantly improve the rivetability of magnesium alloys, and greatly increase the joint strength, comparing with the traditional SPR process.

Adhesive Distribution and Global Deformation between Hybrid Joints

2015 ◽  
Vol 651-653 ◽  
pp. 1465-1471 ◽  
Author(s):  
Dirk Landgrebe ◽  
Bernd Mayer ◽  
Stephan Niese ◽  
Holger Fricke ◽  
Ivo Neumann ◽  
...  
Keyword(s):  
Automotive Industry ◽  
High Speed ◽  
Adhesive Bonding ◽  
Measurement Technology ◽  
Detailed Knowledge ◽  
Small Surface ◽  
Mechanical Joining ◽  
Hybrid Joint ◽  
Hybrid Joints ◽  
Joining Process

In multi-material-design, e.g. in the automotive industry, mechanical joining processes like self-pierce riveting are well established, because of their amount of advantages. However, adhesive bonding with one-component structural adhesives is increasingly being used. The combination of the specific advantages of both joining techniques in the form of hybrid joints leads to synergies of quality and reliability, such as high corrosion resistance and better damping properties. A critical issue is the generation of global deformations of the different parts of the mechanical joints. These global deformations of the sheet metal between two or more mechanical connectors (e.g. rivets) are caused by the formation of adhesive bags during the riveting process, before the adhesive curing takes place. This research focuses on the time-dependent formation process of these bags. The aim is to achieve a reduction of global deformations based on detailed knowledge of the adhesive flow during the manufacturing of the joint by means of experiments and simulations. For this purpose experimental techniques and measurement methods for deformations over time are presented for different setups of hybrid joint types of self-piercing rivets in combination with adhesive bonding. The challenge is to track rapid and small surface deformations very accurately in the ongoing mechanical joining process. High-speed optical measurement technology like Point-Tracking and surface scanning are used to track the resulting deformations experimentally. Numerical investigations, which include the interaction of the solid matter influenced in the mechanical joining process and the fluid adhesive, are presented. On the basis a fully coupled fluid-structure interaction simulation of a single hybrid joint, a surrogate model for a multi-point hybrid joint is developed. The comparison of experimental data with simulations allows deriving the pressure distribution and flow velocities inside the adhesive layer. The influence of various parameters can be interpreted based on the physics of the interacting system, ultimately resulting in optimization helpful to the automotive industry.

Electro-Hydraulic Clinching: A novel high speed joining process

2018 ◽  
Vol 35 ◽  
pp. 559-569 ◽  
Author(s):  
Vahid Babalo ◽  
Ali Fazli ◽  
Mahdi Soltanpour
Keyword(s):  
High Speed ◽  
Joining Process

scholarly journals High-Speed Friction Welding as an Innovative Technology for Joining Solenoid Valve Elements Made of Steel Grades 11SMnPb37 and 11SMn37

2021 ◽  
pp. 25-30
Author(s):  
Damian Miara ◽  
Jolanta Matusiak ◽  
Adam Pietras ◽  
Mateusz Świetlik
Keyword(s):  
Friction Welding ◽  
High Speed ◽  
Solenoid Valve ◽  
Innovative Technology ◽  
Test Results ◽  
Technological Parameters ◽  
Steel Grades ◽  
Solid State Joining ◽  
Joining Process

High-speed friction welding (HSFW) is a solid-state joining process involving the use of friction heat emitted during the technological process. The application of the HSFW technology enables the fast and repeatable making of joints characterised by favourable properties. The article presents tests concernin the development of the HSFW-based technology enabling the joining of solenoid valve elements made of two grades of free-cutting steel, i.e. 11SMnPb37 and 11SMn37. The article also discusses the course of technological tests, the making of a test rig, the determination of ranges of technological parameters and selected test results concerning welded joints.

A New One-Sided Joining Process for Aluminum Alloys: Friction Stir Blind Riveting

2009 ◽  
Vol 131 (6) ◽  
Author(s):  
Dalong Gao ◽  
Ugur Ersoy ◽  
Robin Stevenson ◽  
Pei-Chung Wang
Keyword(s):  
Aluminum Alloys ◽  
High Speed ◽  
Tensile Load ◽  
Operating Conditions ◽  
Frictional Heat ◽  
Operating Parameters ◽  
Friction Stir ◽  
Wide Range ◽  
Riveting Process ◽  
Joining Process

Friction stir blind riveting is a new joining process for one-sided joining (compared with the two-sided access required for, for example, self-piercing riveting) of aluminum alloys, which eliminates the need to predrill a hole for rivet insertion. A blind rivet rotating at high speed is brought into contact with the workpieces, thereby generating frictional heat between the rivet and the workpiece, which softens the workpiece material and enables the rivet to be driven into the workpieces under reduced force. Once fully inserted, the blind rivet is upset using the internal mandrel (as in a conventional blind riveting process) to fasten the workpieces together. Our study showed that friction stir blind riveting process can be carried out over a wide range of operating parameters. The resulting joints show consistent strength under tensile load with minimal influence of changes in operating parameters. The robustness of the process against variations in operating conditions shows that the process can be carried out without high-end equipment and without requiring precise initial setup. It also suggests that the process is feasible for rapid joint fabrication in volume production. Further study revealed superior static and fatigue strength from the friction stir blind riveting process, when compared with conventional spot welding, which suggests potential for reduction in the number of joints required in a structure.

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