Results 51 to 60 of about 38,658 (264)

Part Fabrication Using Laser Machining and Welding [PDF]

, 1993
This paper describes the current work on a laser cutting and welding system for the fabrication of prototype parts in mild and .. stainless steels.
Pridham, M.S., Thomson, G.
core   +1 more source

Laser Beam Welding with High-Frequency Beam Oscillation: Welding of Dissimilar Materials with Brilliant Fiber Lasers

Physics Procedia, 2011
Brilliant laser beam sources in connection with a high frequent beam oscillation make it now possible to join metallic material combinations, which have been conventionally non-laser weldable up to now. It concerns especially such combinations like Al-Cu, where brittle intermetallic phases occur.
Kraetzsch, Mathias, Standfuss, Jens, Klotzbach, Annett, Kaspar, Joerg, Brenner, Berndt, Beyer, Eckhard   +5 more
openaire   +1 more source

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

Advanced 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, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 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

Micromachines, 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, Tobias Jeron, Claudio Hoelbling, Lars Müller, Michael Schmidt   +4 more
doaj   +1 more source

Effect of Laser Deoxidation on Adhesive‐Bonded Aluminum in an Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
This study investigates laser ablation of aluminum under oxygen‐free conditions. The goal is to produce oxide‐free substrates that enable improved adhesive bonding with epoxy. Optimized laser parameters (90% overlap, 300 µJ) combined with oxide‐free substrates result in the highest tensile strength of the adhesive bond.
Sandra Gerland, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Ludger Overmeyer, Annika Raatz   +5 more
wiley   +1 more source

Общие вопросы развития электроприводов современных металлорежущих станков [PDF]

, 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., Knitsch, A., Loosen, P., Poprawe, R.   +3 more
core  

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

Advanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +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

Journal 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

Laser Interferometer Gravitational-Wave Observatory beam tube component and module leak testing [PDF]

, 2000
Laser Interferometer Gravitational-Wave Observatory (LIGO) is a joint project of the California Institute of Technology and the Massachusetts Institute of Technology funded by the National Science Foundation.
Carpenter, W. A., Jones, L., Shaw, P. B., Weiss, R.   +3 more
core   +1 more source

Methods for Improving Laser Beam Welding Efficiency

Physics 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