Microplasma welding is a less expensive alternative to laser welding in dental technology. The aim of the study was to highlight discontinuities present in the microplasma welded joints of dental base metal alloys by visual analysis. Five base metal alloys designated for fixed prostheses manufacture were selected for the experiments. Using these plates, preliminary tests were conducted by micro...

Laser-based ultrasonic (LBU) measurement shows great promise for on-line monitoring of weld quality in tailor-welded blanks. Tailor-welded blanks are steel blanks made from plates of differing thickness and/or properties butt-welded together; they are used in automobile manufacturing to produce body, frame, and closure panels. LBU uses a pulsed laser to generate the ultrasound and a continuous ...

In order to ensure high weld qualities and structural integrity of engineering structures, it is crucial detect areas stress concentrations along seams. Traditional inspection methods rely on visual manual geometry measurements. Recent advances in the field automated measurement techniques allow virtually unrestricted numbers inspections by laser measurements profiles; however, compare differen...

In this work, the effect of a filler wire feed rate was studied with special attention to proportion porosity volume in weld metal, microstructure, and mechanical properties. Butt laser joints were created using Nd:YAG laser. Weld produced AZ31 diameter 1.2 mm. Decreasing led an increase metal. Therefore, is more likely occur welding without use wire. Clear segregation aluminium, manganese, zin...

Abstract Aluminium alloy has high mechanical properties and is widely used in manufacturing vehicles to reduce weight. This paper describes an experimental numerical study of the aluminium 6082-T6 plates butt weld joints. Experiments were conducted on three joint specimens, then stress-strain curves obtained analyzed. Finite element (FE) models developed validated against test results. Based da...

Welded mild steel is used in different applications engineering. To strengthen the joint, weld can be reinforced by adding titanium alloy powder to joint. This results formation of incomplete martensite a welded The affects mechanical properties. Therefore, this study aims predict volume fraction butt joints understand complex phenomena during microstructure formation. do so, combination finite...

Welding input parameters play a very significant role in determining the quality of a weld joint. The joint quality can be defined in terms of properties such as weld-bead geometry, mechanical properties, and distortion. Generally, all welding processes are used with the aim of obtaining a welded joint with the desired weld-bead parameters, excellent mechanical properties with minimum distortio...

In this work, dissimilar butt joints of 6061 aluminum and 304 stainless steel were prepared by friction stir welding (FSW), the FSW process is monitored infrared (IR) thermography. Considering different material properties between steel, a novel CFD model with weld tool developed tested to investigate effects on aluminum-steel joint under traverse speeds. The calculated temperature thermal cycl...

Three-dimensional residual stress mapping of an aluminum 2024-T3 arcan specimen, butt-welded by the friction stir technique, was performed by neutron diffraction. Results indicate that the residual stress distribution profiles across the weld region are asymmetric with respect to the weld centerline, with the largest gradients in the measured residual stress components occurring on the advancin...

The performance of laser welding of Ti and two dental precious alloys (Ag-Pd-Au, Au-Pt-Ag) was investigated by mechanical testing and microscopic observation, using butt joint as design. The laser irradiation was done using a commercial Nd:YAG dental laser-welding device in a single pulse mode with output currents 150, 200, 250, 300A, spot diameters 0.6, 0.9, 1.2mm, and pulse duration 10ms. The...