Results 31 to 40 of about 27,379 (235)
Laser Spot Micro-Welding of Ultra-Thin Steel Sheet
Micromachines, 2021 This paper reports a mechanism understanding how to reduce the solder joint failure phenomenon in the laser spot micro-welding process of ultra-thin steel sheets. An optimization method to improve solder joint service life is proposed. In this study, the
Quanhong Li +4 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt +8 more
wiley +1 more source
Investigation of conduction to keyhole mode transition [PDF]
, 2012 There are two very distinct welding modes in laser welding, keyhole and conduction mode. The characteristics of keyhole laser welding; mainly high penetration, high productivity and high aspect ratio have led the industry to focus more on this mode.
Goncalves Assuncao E +1 more
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Plasma Charge Current for Controlling and Monitoring Electron Beam Welding with Beam Oscillation
Sensors, 2012 Electron beam welding (EBW) shows certain problems with the control of focus regime. The electron beam focus can be controlled in electron-beam welding based on the parameters of a secondary signal.
Valeriy Shchavlev +5 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat +7 more
wiley +1 more source
Uma abordagem técnica e científica do processo TIG Keyhole à luz de novas tecnologias e aspectos comparativos com o processo plasma [PDF]
, 2015 Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Mecânica, Florianópolis, 2015.Na tecnologia da soldagem existem muitas situações pouco quantificáveis que são conduzidas à ...
González Olivares, Erick Alejandro
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Frontiers in Surgery, 2021 Background: Patch-based approaches to regenerating damaged myocardium include epicardial surgical transplantation of heart patches. By the time this therapy is ready for widespread clinical use, it may be important that patches can be delivered via ...
Christopher David Roche +6 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi +3 more
wiley +1 more source
Desenvolvimento e aplicação de soldagem plasma pela tecnica Keyhole [PDF]
, 1997 Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro TecnologicoInvestigação relacionada a soldagem plasma pela técnica keyhole, destacando-se alguns aspectos operacionais e metalúrgicos inerentes ao processo. Utilizou-se como material
Paula Júnior, Odir Silva de
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Advanced Materials Technologies, EarlyView.ABSTRACT Real‐time insight into local chemistry is critical for reliable part quality in additive manufacturing, especially laser powder bed fusion (PBF‑LB/M), where rapid thermal cycles and localized evaporation can undermine part performance. Optical emission spectroscopy (OES) offers non‑intrusive, in situ plume monitoring, but detection geometry ...
Philipp Gabriel +4 more
wiley +1 more source