A digital twin (DT) is a cyberspace replica of a system, such as manufacturing equipment. A
DT consists of statistical models and computer simulations of physical phenomena occurring …

This article reviews and discusses the recent progresses of studies with the concept of"
Computational plasma fluid mechanics." Computational demonstrations show that the …

Two-dimensional axisymmetric heat source distributions of the arc plasma were obtained by
a grid-based simulation. These distributions and a particle-based method that couples the …

Aluminum alloys are increasingly being applied to automobile bodies to reduce the weight
of automobiles. In joining steel materials and aluminum alloys using resistance spot welding …

Submerged arc welding (SAW) is widely used for butt welding of thick plates in large steel
structures because of its high deposition rate and high weld quality. With a thickness of 150 …

In this study, welding phenomena during submerged arc welding (SAW) were revealed with
X-ray observation. In the experiment, the test coupon was placed between the X-ray source …

A drop transfer mode and a rotating transfer mode in high current gas metal arc welding
named buried arc welding were modeled using a particle method that was suitable for …

Numerical simulation based on an incompressible smoothed particle hydrodynamics
method was performed to clarify dominant factors of slag transfer and deposition processes …

Never before has an optical method been used to determine the arc temperature inside a
submerged arc welding cavern with frequencies up to 5 kHz. To be able to do that, a …

Characteristic dynamics in lava flows, such as the formation processes of lava levees, toe-
like tips, and overlapped structures, were reproduced successfully through numerical …