Results 51 to 60 of about 40,382 (313)

Laser Beam Welding of Brass

open access: yesPhysics Procedia, 2014
AbstractUp to date the evaporation process in laser beam welding of alloys with volatile elements is not completely understood. This paper discusses the phenomena occurring at the welding process of brass with 37m% zinc. Since copper has a solidification temperature of 1,087°C and zinc vaporizes at a temperature of 907°C, a strong evaporation takes ...
Hugger, Florian   +3 more
openaire   +1 more source

Sensor integration for robotic laser welding processes [PDF]

open access: yes, 2005
The use of robotic laser welding is increasing among industrial applications, because of its ability to weld objects in three dimensions. Robotic laser welding involves three sub-processes: seam detection and tracking, welding process control, and weld ...
Aarts, Ronald   +2 more
core   +2 more sources

Novel Functional Materials via 3D Printing by Vat Photopolymerization

open access: yesAdvanced Functional Materials, EarlyView.
This Perspective systematically analyzes strategies for incorporating functionalities into 3D‐printed materials via Vat Photopolymerization (VP). It explores the spectrum of achievable functionalities in recently reported novel materials—such as conductive, energy‐storing, biodegradable, stimuli‐responsive, self‐healing, shape‐memory, biomaterials, and
Sergey S. Nechausov   +3 more
wiley   +1 more source

In-Process Analysis of Melt Pool Fluctuations with Scanning Optical Coherence Tomography for Laser Welding of Copper for Quality Monitoring

open access: yesMicromachines, 2022
Optical coherence tomography (OCT) is an inline process monitoring technology for laser welding with various applications in the pre-, in-, and post-process.
Thomas Will   +4 more
doaj   +1 more source

Общие вопросы развития электроприводов современных металлорежущих станков [PDF]

open access: yes, 1952
Besides their high efficiency and compact dimensions high power diode laser systems feature the modularity to from different beam shapes adapted to the respective application.
Hoffmann, D.   +3 more
core  

Boron‐Doped Nano‐Crystalline Coated Carbon Fibers for Phasic Dopamine Sensing

open access: yesAdvanced Healthcare Materials, EarlyView.
This uniform coating presents a mix of graphitic and diamond‐like carbon to create a mechanically and electrically robust alternative for the electrochemical detection of dopamine. The electrodes in this work possess the equivalent sensitivity to the state‐of‐the‐art FSCV dopamine detecting electrodes, whilst demonstrating an ability to withstand ...
Simon J. Higham   +19 more
wiley   +1 more source

Stabilizing Frustrated Phase Transitions in Selective Oxidation Reactions

open access: yesAdvanced Materials, EarlyView.
Using multimodal operando spectromicroscopy, the frustrated phase transition responsible for selective oxidation over cobalt oxide spinel catalysts is identified, corresponding to combined surface reaction and Mars‐van Krevelen (MvK) dynamics. This regime is disrupted by the formation of mobile vacancies and the depletion of active oxygen at high ...
Luis Sandoval‐Diaz   +11 more
wiley   +1 more source

A comparative evaluation of microstructural and mechanical behavior of fiber laser beam and tungsten inert gas dissimilar ultra high strength steel welds

open access: yesDefence Technology, 2016
The influence of different welding processes on the mechanical properties and the corresponding variation in the microstructural features have been investigated for the dissimilar weldments of 18% Ni maraging steel 250 and AISI 4130 steel.
Jaiteerth R. Joshi   +4 more
doaj   +1 more source

Influence of severe shot peening and Plasma spray FeCr18Ni10Mo3 coating on microstructure and mechanical properties of super austenite stainless steel sheets by laser beam welding

open access: yesJournal of Materials Research and Technology, 2021
In this investigation, the microstructure and mechanical properties on severe double side shot peened and Plasma Spray FeCr18Ni10Mo3 filler power coated (PSC) Super Austenite Stainless Steel (SASS) was investigated for the butt joint configuration of 2 ...
R. Selvabharathi, A. Thamarai Selvan
doaj   +1 more source

Methods for Improving Laser Beam Welding Efficiency

open access: yesPhysics Procedia, 2014
AbstractThe aim of this paper is to evaluate methods for improving laser beam welding efficiency, namely, obtaining increased penetration depth and enhanced weld quality without an increase in laser power or a decrease in welding speed. Increased efficiency can be realized with several techniques: butt joint edge surface modifications, preheating and ...
Salminen Antti, Sokolov Mikhail
openaire   +1 more source

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