Results 51 to 60 of about 15,140 (257)

Does Long‐Term Lower Extremity Strength Training in Adults With Knee Osteoarthritis and Varus Alignment Reduce Knee Joint Loading During Gait?

open access: yesArthritis Care &Research, EarlyView.
Objective We examined whether 18 months of strength training in individuals with knee varus alignment and medial tibiofemoral osteoarthritis (OA) reduced knee joint loads during walking compared to an attention control group. Methods This study was a secondary analysis of a randomized clinical trial that compared the effects of strength training to a ...
Stephen P. Messier   +12 more
wiley   +1 more source

Beyond the Toolpath: Site-Specific Melt Pool Size Control Enables Printing of Extra-Toolpath Geometry in Laser Wire-Based Directed Energy Deposition

open access: yesApplied Sciences, 2019
A variety of techniques have been utilized in metal additive manufacturing (AM) for melt pool size management, including modeling and feed-forward approaches. In a few cases, closed-loop control has been demonstrated.
Brian T. Gibson   +3 more
doaj   +1 more source

Joint integrity evaluation of laser beam welded additive manufactured Ti6Al4V sheets

open access: yesScientific Reports, 2022
The feasibility of joining laser metal deposited Ti6Al4V sheets using laser beam welding was investigated in this article. The additive manufactured sheets were joined using a 3 kW CW YLS-2000-TR ytterbium laser system.
P. O. Omoniyi   +9 more
doaj   +1 more source

Influence of Processes and Process Variables for WAAM – Geometry of Deposited Bead

open access: yes
Wire Arc Additive Manufacturing (WAAM) is developing rapidly in recent years due to its advantages, such as higher productivity, lower cost, acceptable quality, and the availability of advanced welding processes. Cold Metal Transfer (CMT), as the most well-known Gas Metal Arc Welding (GMAW) process, is widely used in WAAM. The uniqueness of CMT lies in
Li, Peigang   +2 more
openaire   +3 more sources

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios   +5 more
wiley   +1 more source

Study of Thermal Effect on The Weld Bead Geometry During Fusion Welding

open access: yesJournal of Engineering and Sustainable Development, 2013
This work aims basically to study the thermal effect caused by the weldment surface temperature and welding speed on the main features of weld geometry (bead width and penetration) during fusion welding (GMAW) type TIG for hot rolled low carbon steel ...
Salah Sabeeh Abed-Alkareem
doaj  

Parameter optimization of shielded metal arc welding process on weld bead geometry using whale optimization algorithm and grasshopper optimization algorithm

open access: yesJournal of Engineering and Applied Science
The mechanical and microstructural properties of a metal plays a very crucial role in different applications. To obtain the desired mechanical properties, the manufacturing process plays a very critical role.
Pushp Kumar Baghel
doaj   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth   +6 more
wiley   +1 more source

Application of Imperialist Competitive Algorithm to optimization problems arising in welding process [PDF]

open access: yesInternational Journal of Advanced Design and Manufacturing Technology, 2014
The Imperialist Competitive Algorithm (ICA) that was recently introduced has shown its good performance in optimization problems. This algorithm is inspired by competition mechanism among Imperialists and colonies, in contrast to evolutionary algorithms.
Hossein Towsyfyan   +2 more
doaj  

Numerical Model for Predicting Bead Geometry and Microstructure in Laser Beam Welding of Inconel 718 Sheets

open access: yesMetals, 2018
A numerical model was developed for predicting the bead geometry and microstructure in laser beam welding of 2 mm thickness Inconel 718 sheets. The experiments were carried out with a 1 kW maximum power fiber laser coupled with a galvanometric scanner ...
Iñigo Hernando   +3 more
doaj   +1 more source

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