Results 61 to 70 of about 48,449 (264)

Influence of Gravity on Molten Pool Behavior and Analysis of Microstructure on Various Welding Positions in Pulsed Gas Metal Arc Welding

open access: yesApplied Sciences, 2019
This study performed welding on various welding positions in the flat, overhead, and vertical down positions using a pulsed gas metal arc welding (P-GMAW) process.
Jin-Hyeong Park   +3 more
doaj   +1 more source

Derivation of forces acting on the liquid weld metal based on arc pressure measurements produced using alternating shielding gases in the GTAW process [PDF]

open access: yes, 2013
As part of an ongoing process to fully evaluate the effects of an alternating shielding gas supply on the gas tungsten arc and gas metal arc welding processes, a comparison between arc pressures produced using argon, helium, alternating gases and GTAW-P ...
Campbell, Stuart   +2 more
core  

Measuring the process efficiency of controlled gas metal arc welding processes [PDF]

open access: yes, 2011
The thermal or process efficiency in gas metal arc welding (GMAW) is a crucial input to numerical models of the process and requires the use of an accurate welding calorimeter.
Colegrove, Paul A.   +5 more
core   +1 more source

Perspective on Double Pulsed Gas Metal Arc Welding [PDF]

open access: yesApplied Sciences, 2017
Aluminum alloy welding suffers from problems such as solidification cracking and hydrogen-induced porosity, which are sufficiently severe to limit its potential applications. Because mitigated porosity incidence and solidification cracking are observed in aluminum welds using double pulsed gas metal arc welding (DP-GMAW), a comprehensive review of the ...
Leilei Wang, Jiaxiang Xue
openaire   +2 more sources

Ductile Inorganic Thermoelectrics: Advances, Challenges, and Perspectives

open access: yesAdvanced Energy Materials, EarlyView.
Thermoelectric technology facilitates efficient energy harvesting from natural sources, especially body heat. Plastic bulk inorganic thermoelectric materials offer high plasticity, ease of fabrication, and competitive thermoelectric performance. This review comprehensively outlines recent advances in plastic bulk inorganic thermoelectrics, focusing on ...
Cheng‐Jiong He   +5 more
wiley   +1 more source

An Evaluation of Welding Processes to Reduce Hexavalent Chromium Exposures and Reduce Costs by Using Better Welding Techniques

open access: yesEnvironmental Health Insights, 2014
A group of stainless steel arc welding processes was compared for emission rates of fume and hexavalent chromium, and costs per meter length of weld.
Michael J. Keane
doaj   +1 more source

Gas Metal Arc Root Welding of Pearlitic Rails Using Magnetic Arc Deflection [PDF]

open access: yesMATEC Web of Conferences, 2019
Magnetic arc deflection was applied to improve gas metal arc root welds on R260 pearlitic rail steel foot samples. During laboratory welding trials parameter optimization was carried out which comprised the welding current, voltage and speed, layer ...
Weingrill Leonhard   +4 more
doaj   +1 more source

A Fuzzy Risk Assessment Approach Based on Z‐Numbers for Enhancing Safety and Human‐Robot Collaboration in Automotive Sector

open access: yesAdvanced Intelligent Systems, EarlyView.
A novel risk assessment approach that integrates the fuzzy set theory and Z‐numbers with multicriteria decision‐making techniques (Delphi, decision‐making trial and evaluation laboratory, analytic network process, and VIseKriterijumska Optimizacija I Kompromisno Resenje) to manage uncertainty and prioritize human–robot collaboration risks. A real‐world
Emine Bozkus, İhsan Kaya
wiley   +1 more source

Arc pressure and weld metal fluid flow whilst using alternating shielding gases Part 2 : arc force determination [PDF]

open access: yes, 2013
The transient variation of the shielding gas present in the alternating shielding gas process produces a dynamic action within the liquid weld metal. Flow vectors opposite in direction have been reported due to the various forces acting on the weld metal
Campbell, Stuart   +2 more
core   +1 more source

Insight Into Puncture‐Induced Thermal Runaway in Lithium‐Ion Batteries to Reduce Fire Risks in Electric Vehicle Collisions

open access: yesBattery Energy, EarlyView.
This review examines nail penetration‐induced thermal runaway (TR) in lithium‐ion batteries, analyzing experimental and modeling studies on critical factors—battery materials, nail properties, state of charge, and penetration dynamics. It also explores internal short‐circuit modes, TR severity, and safety solutions such as advanced separators, non ...
Hong Zhao   +5 more
wiley   +1 more source

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