Multi-layer deposition mechanism in ultra high-frequency pulsed wire arc additive manufacturing (WAAM) of NiTi shape memory alloys

WC Ke, JP Oliveira, BQ Cong, SS Ao, ZW Qi… - Additive …, 2022 - Elsevier
Ultra high-frequency pulsed gas tungsten arc welding (UHFP-GTAW)-based Wire Arc
Additive Manufacturing (WAAM) was used to fabricate thin walls of NiTi shape memory …

Ultra-high-power laser welding of thick-section steel: Current research progress and future perspectives

Y Li, S Geng, L Shu, Y Li, P Jiang - Optics & Laser Technology, 2023 - Elsevier
Thick-section steel is widely used in large structural applications, taking advantage of its
characteristics, including high strength, good toughness, and low cost. Ultra-high-power …

Computational fluid dynamics simulation of hybrid laser-MIG welding of 316 LN stainless steel using hybrid heat source

AK Unni, M Vasudevan - International Journal of Thermal Sciences, 2023 - Elsevier
Hybrid laser-MIG welding (HLMW) process is preferred for welding thick sections (> 10 mm)
to achieve faster and full penetration weld displaying enhanced productivity due to the …

Numerical analysis of coupling dynamics of keyhole and molten pool in vertical-up laser mirror welding of 2219 aluminum alloy

Y Zhou, J Wang, Y Zhao, L Cheng, X Zhan - International Journal of …, 2023 - Elsevier
In vertical-up laser mirror welding, the keyhole dynamics and flow behavior of molten pool
play crucial roles in weld quality, yet the mechanisms of these coupling dynamics have not …

Numerical simulation of heat transfer and fluid flow during vacuum electron beam welding of 2219 aluminium girth joints

Z Yang, Y Fang, J He - Vacuum, 2020 - Elsevier
In this paper, a three-dimensional model, which is combined with the volume of fluid (VOF)
model, is established to study the dynamic behaviour and keyhole stability of circumferential …

[PDF][PDF] 基于BP 神经网络补偿卡尔曼滤波的激光-MIG 复合焊缝熔宽在线检测

刘秀航, 黄宇辉, 张艳喜, 高向东 - Chinese Journal of Lasers, 2022 - researching.cn
摘要焊缝熔宽是评估焊接质量和焊接稳定性的重要指标. 针对强噪声环境下的激光-MIG
复合焊接过程, 本文研究了基于反向传播(BP) 神经网络补偿色噪声卡尔曼滤波算法的熔宽检测 …

Probing thermocapillary convection and multisolute dilution in laser welding of dissimilar miscible metals

Z Li, G Yu, X He, C Tian, S Li, H Li - International Journal of Thermal …, 2022 - Elsevier
Coupled with convection flow, multisolute dilution was investigated by an improved
numerical model during laser dissimilar welding of 304 stainless steel and nickel. Thermal …

Fluid flow and solute dilution in laser linear butt joining of 304SS and Ni

Z Li, G Yu, X He, S Li, Z Li - International Journal of Heat and Mass Transfer, 2020 - Elsevier
Laser linear welding combined with advanced auto-control technology is a promising joint
method of dissimilar metals. In this study, an improved three-dimensional model was …

[HTML][HTML] Penetration and mixing of filler wire in hybrid laser welding

W Suder, S Ganguly, S Williams… - Journal of Materials …, 2021 - Elsevier
Modern lasers allow achievement of full penetration single pass welds in steel plates with
thicknesses exceeding 20 mm, at welding speeds much greater than any traditional arc …

Finite element analysis and experimental investigation of moving heat source model for GMAW deposited mild steel weld bead

M Aslam, CK Sahoo - … Engineers, Part E: Journal of Process …, 2022 - journals.sagepub.com
An investigation has been done to identify the heat source model suitable for numerical
modeling of the Gas Metal arc Welding (GMAW) welding process. In the present …