Progress of computational plasma fluid mechanics

M Shigeta - Japanese Journal of Applied Physics, 2023 - iopscience.iop.org
This article reviews and discusses the recent progresses of studies with the concept of"
Computational plasma fluid mechanics." Computational demonstrations show that the …

Study on proper welding condition for ultranarrow gap submerged arc welding

Y Abe, T Fujimoto, M Nakatani, M Shigeta… - Welding …, 2021 - Taylor & Francis
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-situ X-ray imaging of the breakup dynamics of current-carrying molten metal jets during arc discharge

Y Sato, T Shobu, A Tominaga, T Sano… - Communications …, 2024 - nature.com
The flow dynamics of current-carrying molten metal jet breakup during arc discharge serves
as mass and heat sources in wire-arc-based metal deposition processes, thereby optimizing …

Visualization of electromagnetic-thermal-fluid phenomena in arc welding

M Shigeta, M Tanaka - Japanese Journal of Applied Physics, 2019 - iopscience.iop.org
This paper addresses experimental approaches using spectroscopic diagnostics, and
theoretical approaches using mathematical modeling, to visualize electromagnetic-thermal …

Splashing of tungsten-based anode during arc discharge

K Iida, H Komen, M Shigeta, M Tanaka - Scientific Reports, 2023 - nature.com
A unique mechanism of splashing from a tungsten-based anode was identified during arc
discharge. Splashing occurred by breakoff of a liquid metal column, which elongates after a …

High speed X-ray observation of digital controlled submerged arc welding phenomena

Y Abe, T Fujimoto, M Nakatani… - … and Technology of …, 2021 - journals.sagepub.com
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 …

Numerical simulation of droplet transfer with TiO2 flux column during flux cored arc welding by 3D smoothed particle hydrodynamics method

R Ueno, H Komen, M Shigeta… - Quarterly Journal of the …, 2020 - jstage.jst.go.jp
A molten metal droplet transfer processes were simulated by a numerical model using a
three-dimensional smoothed particle hydrodynamics method in order to clarify the flux …

Splashing of tungsten-based anode during arc discharge

I Kenta, H KOMEN, M SHIGETA, M TANAKA - 2023 - researchsquare.com
A unique mechanism of splashing from a tungsten-based anode was identified during arc
discharge. Splashing occurred by breakoff of a liquid metal column, which elongates after a …

極狭開先サブマージアーク溶接における適正溶接条件の検討

阿部洋平, 藤本貴大, 中谷光良, 茂田正哉, 田中学 - 溶接学会論文集, 2021 - jstage.jst.go.jp
抄録 Submerged arc welding is widely used for butt welding of thick plates in large steel
structures because of its high deposition rate and high weld quality. With thickness of …

サブマージアーク溶接中の壁面移行形態の二次元粒子法シミュレーション

古免久弥, 森本堅太, 田中学, 寺崎秀紀 - スマートプロセス学会誌, 2023 - jstage.jst.go.jp
抄録 The flux-wall guided transfer mode in submerged arc welding was mo deled by a
particle method and simulated in two dimensions. Moreover, numerical experiments were …