Conventional Non Destructive Testing (NDT) techniques for assessing the weld quality are applied after welding is completed. It results in wastage of time, material and manpower. These inherent limitations of the conventional welding processes can be overcome with an automated adaptive welding system to correct the deviation in the welding current and torch speed to provide defect free welds. T...

In order to meet the increasing requirements of automotive industry for material strength grades and performance, application advanced highstrength steel panels, represented by dual-phase steel, in lightweight vehicle bodies is increasing. Resistance spot welding main joining process body manufacturing. How improve tensile fatigue performance resistance joints great significance structure body....

Resistance spot welding process comprises of electric, thermal and mechanical phenomenon, which makes this process complex and highly non-linear and thus, it becomes difficult to model it. In order to obtain good weld nugget during spot welding, hit and trial welds are usually done which is very costly. Therefore the numerical simulation research has been conducted to understand the whole proce...

A special form of laser spot welding is introduced to overlap dissimilar welding of titanium (G2) to 3105-O aluminum alloy. A welding tactile seam tracking design using following pulses that result to a circular seam leads to spot like shape laser welding. This technique was conducted to joint overlapped grad 2 Titanium alloy (Ti G2) to 3105-O Al alloy, with 1, and 0.5 mm thicknesses respective...

Al-Si is the most popular coating used to prevent oxidation on surfaces of hot-stamped steel sheets during heating process. However, like other coatings, it affects strength spot welds in joining parts. In this study, effects tensile resistance spot-welded joints are discussed. Two types 1.8 mm steel, uncoated and coated forms, were spot-welded, shear behavior welded was studied both static dyn...

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...

Ultrasonic testing is one of the most popular non-destructive methods to determine the quality in spot welds. The next step of this technology is to be able to determine the quality while the weld is being made, this advance can have a great impact on the quality assurance of joints in materials like aluminum, where the spot welding process is a difficult task. In our approach, a state-of-the-a...