Results 11 to 20 of about 287,305 (267)

Effects of Active Gases on Droplet Transfer and Weld Morphology in Pulsed-Current NG-GMAW of Mild Steel

open access: yesChinese Journal of Mechanical Engineering, 2021
The current research of narrow-gap gas metal arc welding (NG-GMAW) primarily focuses on improving the sidewall fusion and avoiding the lack-of-fusion defect. However, the high cost and operation difficulty of the methods limit the industrial application.
Guoqiang Liu   +4 more
doaj   +1 more source

Computationally Efficient Models of High Pressure Rolling for Wire Arc Additively Manufactured Components

open access: yesApplied Sciences, 2021
High pressure multi-layer rolling is an effective method to reduce residual stress and distortion in metallic components built by wire arc additive manufacturing (WAAM).
Valeriy Gornyakov   +3 more
doaj   +1 more source

Coherent scatter-controlled phase-change grating structures in silicon using femtosecond laser pulses

open access: yesScientific Reports, 2017
Periodic structures of alternating amorphous-crystalline fringes have been fabricated in silicon using repetitive femtosecond laser exposure (800 nm wavelength and 120 fs duration). The method is based on the interference of the incident laser light with
Yasser Fuentes-Edfuf   +7 more
doaj   +1 more source

Laser Powder Welding of a Ti52Al46.8Cr1Si0.2Titanium Aluminide Alloy at Elevated Temperature

open access: yesHigh Temperature Materials and Processes, 2011
A method for the joining of a Ti52Al46.8Cr1Si0.2Titanium Aluminide alloy by laser powder welding is presented. The technique acts to join materials by consolidating powder with focused laser beam to form weld beads that fill a V joint.
Smal C. A., Meacock C. G., Rossouw H. J.
doaj   +1 more source

Femtosecond laser induced thermophoretic writing of waveguides in silicate glass

open access: yesScientific Reports, 2021
Here in, the fs-laser induced thermophoretic writing of microstructures in ad-hoc compositionally designed silicate glasses and their application as infrared optical waveguides is reported.
Manuel Macias-Montero   +7 more
doaj   +1 more source

Influence of Cooling Conditions on Long-Period Stacking-Ordered Phase Evolution and Corrosion Behavior of As-Cast Resoloy®

open access: yesMetals, 2021
This study focuses on the influence of cooling conditions on the long-period stacking-ordered (LPSO) phase evolution and corrosion behavior of as-cast Resoloy®, a bioresorbable Mg-Dy-based alloy. Metallographic and corrosive tests are used to monitor the
Sandra Ahlers   +2 more
doaj   +1 more source

High Power Fiber Laser Welding of Single Sided T-Joint on Shipbuilding Steel with Different Processing Setups

open access: yesApplied Sciences, 2017
Laser welding of thick plates in production environments is one of the main applications of high power lasers; however, the process has certain limitations.
Anna Unt   +4 more
doaj   +1 more source

Understanding and designing post-build rolling for mitigation of residual stress and distortion in wire arc additively manufactured components

open access: yesMaterials & Design, 2022
Post-build rolling can mitigate residual stress (RS) and distortion in large-scale components built by wire arc additive manufacturing (WAAM). In this study, based on numerical simulations that considered both WAAM deposition and vertical rolling, the ...
Valeriy Gornyakov   +3 more
doaj   +1 more source

CFD MODEL OF LASER ADDITIVE MANUFACTURING PROCESS OF CYLINDERS

open access: yesSouth African Journal of Industrial Engineering, 2017
A theoretical approach based on a numerical simulation using experimental data is proposed as a contribution to the study of laser-based additive manufacturing by direct energy deposition (DED).
Tamsaout, Toufik   +4 more
doaj   +1 more source

Low-cycle Fatigue and Fracture Behaviour of 9%Ni Steel Flux Cored Arc Welding joint at Cryogenic Temperature [PDF]

open access: yesMATEC Web of Conferences, 2019
In the present work, low-cycle fatigue (LCF) test and crack tip opening displacement (CTOD) test were performed for 9% Ni steel flux cored arc welding (FCAW) joint at room temperature (296 K) and cryogenic temperature (80 K).
Mu Weidong   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy