High strength low alloy steel (HSLA DOCOL 500 LA) is utilized in the automotive structure because of its superior qualities such as good fatigue resistance, a high strength-to-weight ratio, assisting reducing weight vehicle, increasing fuel efficiency and lower CO2 emissions. Resistance Spot Welding (RSW) most welding technique that used to join automobile parts together. This study investigate...

Resistance spot welding is the most economical joining method for production of automotive steel bodies. In modern car body construction, however, its future applicability limited due to growing mix materials in multi-material design. response increasing weight reduction requirements protect environment and natural resources, lightweight materials, fibre-reinforced plastics (FRP) particular, ar...

Fatigue characteristics of welded joints alloy 01420C made by resistance spot welding and automatic argon arc are obtained. The highest durability was shown with a longitudinal weld. Joints Produced simulating the edge line reinforced element have comparable to an unloaded weld spot, which in turn is inferior joint elements limited cross-section repair mechanical cut similar standard sample for...

With the continuing development of bottom-up nanotechnology fabrication processes, spot welding can play a role similar to its macro counterpart for the interconnection of nano building blocks for the assembly of nanoelectronics and nanoelectromechanical systems (NEMS). Spot welding using single-crystalline copper-filled carbon nanotubes (CNTs) is investigated experimentally using nanorobotic m...

Electrode degradation in the continuous resistance spot-welding process of baked hardening (BH) 220 steel was evaluated by an electrode life test, and weldability tests were conducted geometry feature measurement, mechanical property analysis, diameter measurement with 88 or 176 weld intervals. The analysis shows that heat-affected zone (HAZ) width, nugget diameter, area tend to decrease rapidl...

Resistance spot welding is a simple process with high speeds and one of the most economical productive processes. It applied in various industries such as automobile, aircraft, home appliance; thus, demand for monitoring quality increasing. Owing to nature resistance process, there are several factors that can be monitored, dynamic value, which determined using current voltage measurements, dis...

This thesis presents a process planning methodology for a rapid injection mold tool manufacturing system that involves additive and subtractive techniques, whereby slabs are sequentially bonded and milled using layered tool paths. Mold tools are grown in a bottom up fashion, eliminating the need for multi-axis machining operations (beyond three axes) and allowing small features in deep cavities...

In this paper a novel laser impact spot welding (LISW) method is described, in which a hump was formed on the flyer plate on the intended welding spot location by local pre-forming. When the flyer and base plates were placed together to perform welding, the two plates kept in contact over their entire surfaces except at the hump, where a local air gap was enough to guarantee the impact velocity...