Results 21 to 30 of about 3,731 (161)

Numerical modelling on the influence of repair welding during manufacturing on residual stresses and distortions of T-joints

open access: yesResults in Engineering, 2023
Related to weld quality, level of imperfections is limited which can result in the need of grinding and repair welding. It results in material removal and additional heat cycles causing superimposed distortions and altering the distribution of residual ...
D. Kollár
doaj   +1 more source

Welding sequence effects on residual stress distribution in offshore wind monopile structures [PDF]

open access: yesFracture and Structural Integrity, 2016
Residual stresses are often inevitably introduced into the material during the fabrication processes, such as welding, and are known to have significant effects on the subsequent fatigue crack growth behavior of welded structures.
Ali Mehmanparast   +3 more
doaj   +1 more source

Effect of Welding Sequence in Angular Distortion on Butt Joint GMAW Process

open access: yesApplied Sciences, 2022
Over time, the industrial use of the welding process has grown in significance and is now one of the primary methods for joining metallic parts. During the welding process, metallurgical and structural modifications occur close to the welded joint.
Inês S. Afonso   +2 more
doaj   +1 more source

Effect of Welding Orientation in Angular Distortion in Multipass GMAW

open access: yesJournal of Manufacturing and Materials Processing, 2021
The use of the welding process on an industrial scale has become significant over the years and is currently among the main processes for joining metallic materials. Along the weld, structural changes occur in the vicinity of the joint.
Lucas Martins Garcia   +2 more
doaj   +1 more source

Multi-objective path optimization for arc welding robot based on discrete DN multi-objective particle swarm optimization

open access: yesInternational Journal of Advanced Robotic Systems, 2019
Rational weld seams sequence is important for improving welding productivity and quality. Hence, intelligent path optimization strategy is introduced to obtain optimized weld seams sequence in this article.
Wang Xue-Wu, Min Yong, Gu Xing-sheng
doaj   +1 more source

Field Monitoring Analysis and Welding Sequence Optimization of an Inclined-Column Dense-Beam Exterior Frame in a Super High-Rise Steel Structure

open access: yesBuildings
The exterior frame of super-high-rise steel structures with inclined columns and dense beams contains numerous welded joints and complex constraints, making field welding prone to residual stress and cumulative displacement.
Mai Wu   +7 more
doaj   +1 more source

Numerical Simulation Study on Welding Process of Upper Frame of Hydropower Unit

open access: yesApplied Sciences
To optimize the welding process of the upper frame of the hydropower unit, a thermal elastic–plastic (TEP) finite element model of the typical T-joint of the upper frame was established, and the effectiveness and accuracy of the model were verified by ...
Chenlei Yu   +4 more
doaj   +1 more source

Influence of Tool Material, Tool Geometry, Process Parameters, Stacking Sequence, and Heat Sink on Producing Sound Al/Cu Lap Joints through Friction Stir Welding

open access: yesMetals, 2019
The present study was focused on establishing guidelines for successful friction stir welding of Al alloys and Cu lap joints. Detailed investigations in respect to tool geometry, tool material, work-piece material, welding parameters, stacking sequence ...
Hongyu Wei   +4 more
doaj   +1 more source

OPTIMIZATION OF LASER SPOT WELDING PARAMETERS FOR 304 STAINLESS STEEL THIN SHEETS USING NUMERICAL SIMULATION

open access: yesMateriali in Tehnologije
Laser spot welding of stainless steel is widely used for connecting vehicle body structures and electronic components. In this study, numerical simulation of laser spot welding was conducted on lap joints of 304 austenitic stainless steel thin plates ...
Jin Peng   +9 more
doaj   +1 more source

Secondary ledeburite formation during various welding techniques [PDF]

open access: yesJournal of Mining and Metallurgy. Section B: Metallurgy, 2015
The occurrence and formation sequence of secondary ledeburite in the heat affected zone of chromium ledeburitic tool steel W.Nr. 1.2379 (OCR12 VM) after welding with SAW, TIG, microplasma and laser welding techniques is presented in this paper ...
Tonkovič M.P.   +3 more
doaj   +1 more source

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