The process of Wire Arc Additive Manufacturing (WAAM) utilizes arc welding technology to fabricate metallic components by depositing material in a selective layered fashion. Several processes exist that can achieve this deposition strategy. Gas Metal Welding (GMAW) derived are commonly favored for their high rates (1–4 kg/h) and minimal torch reorientation required during deposition. A range GM...

In this research work, investigations are carried out on Continuous Wave (CW) Nd:YAG laser welding system after preliminary experimentation to understand the influencing parameters associated with laser welding of AISI 304. The experimental procedure involves a series of laser welding trials on AISI 304 stainless steel sheets with various combinations of process parameters like beam power, beam...

This study investigates the impact of gas metal arc welding (GMAW) parameters on bead geometry and material distortion AISI 316L. Three parameters—arc current in ampere (A), filler feed rate (m/min), composition—were modified at varying levels order to examine their effects. sheds new light MAG lines’ physical properties behavior highlights influence quaternary shielding compositions. Taguchi a...

Abstract. Among Directed Energy Deposition (DED) processes for metallic materials, Wire Laser Additive Manufacturing (WLAM), distinguishes itself by the use of a laser beam to melt wire and produce beads. Successive depositions overlapping beads generate volumes obtain parts. Thus, controlling bead geometries is essential additive manufacturing process. Several research works have studied these...

Varying bead concentrations over the course of experiments have been reported by many scientists. A new device was designed and developed to eliminate bead aggregation in a syringe pump prior to flowing through a microchannel. We have modeled the effects of rotation in the absence of longitudinal flow by evenly populating the cross section of a syringe with particles, then tracking their moveme...

This study explores the possibility of tailoring fusion zone in conduction mode laser welding using a deformable mirror for beam shaping multi-kilowatt continuous wave sources. Three power density distributions were shaped and used bead on plate Ti64 plates at three travel speeds. The effect melt pool free surface geometry, cross section, microstructure hardness profiles was measured studied. I...

Manipulation of magnetic beads plays an increasingly important role in molecular diagnostics. Magnetophoresis is a promising technique for selective transportation of magnetic beads in lab-on-a-chip systems. We investigate periodic arrays of exchange-biased permalloy microstripes fabricated using a single lithography step. Magnetic beads can be continuously moved across such arrays by combining...

Optical trap assisted nanopatterning is a laser direct-write technique that uses an optically trapped microsphere as a near-field objective. The type of feature that one can create with this technique depends on several factors, one of which is the shape of the microbead. In this paper, we examine how the geometry of the bead affects the focus of the light through a combination of experiments a...

Nowadays, CMT is used for joining dissimilar thickness of metals achieving higher mechanical strength by using properties both the metals. Joining aluminium alloys with gas metal arc welding cold transfer (GMAW-CMT) process, primary objective this work. butt 6061-T6 (3.18 mm) and 6082-T6 (2 was carried out ER4043 (Al–5%Si) wire. Mechanical microstructural characterization were weld bead. Micros...

original article   electrospun nanofibrous filter media have attracted considerable attention in the last decade. the present study aimed to develop the electrospun pan (polyacrylonitrile) filter media through experimental investigations for application in high-performance air filters. for this purpose, an experimental design was proposed to assess the effect of electrospinning process conditio...