Results 11 to 20 of about 2,164 (187)

Welding of PMMA by a femtosecond fiber laser

Optics Express, 2015
Developing versatile joining techniques to weld transparent materials on a micrometer scale is of great importance in a growing number of applications, especially for the fabrication and assembly of biomedical devices. In this paper, we report on fs-laser microwelding of two transparent layers of polymethyl methacrylate (PMMA) based on nonlinear ...
Annalisa Volpe 1, 2, Francesca Di Niso 1, 2, Caterina Gaudiuso 1, 2, Andrea De Rosa 3, Rebeca Martínez Vázquez 3, Antonio Ancona 1, Pietro Mario Lugarà 1, 2, Roberto Osellame 3   +11 more
openaire   +3 more sources

A Study on Cross-Shaped Structure of Invar Material Using Cold Wire Laser Fillet Welding (PART I: Feasibility Study for Weldability)

Metals, 2020
With the need for eco-friendly energy increasing rapidly due to global environmental issues, there is a rapidly increasing demand for liquefied natural gas (LNG). LNG is liquefied at minus 163 degrees Celsius, and its volume decreases to 1/600, giving it
Du-Song Kim, Changmin Pyo, Jaewoong Kim, Jisun Kim, Hee-Keun Lee   +4 more
doaj   +1 more source

Fiber laser technologies for photoacoustic microscopy

Visual Computing for Industry, Biomedicine, and Art, 2021
Fiber laser technology has experienced a rapid growth over the past decade owing to increased applications in precision measurement and optical testing, medical care, and industrial applications, including laser welding, cleaning, and manufacturing.
Long Jin, Yizhi Liang
doaj   +1 more source

Remote Laser Welding with High Power Fiber Lasers

Engineering, 2013
The introduction of the high power fiber laser with brilliant beam quality has enabled the rapid development of remote laser welding (RLW). This paper presents a theoretical review of remote laser welding. As a promising technology, RLW offers increased flexibility, high operational speed, and reduced cycle time to process a wide range of workpieces ...
Paul Kah, Jinhong Lu, Jukka Martikainen, Raimo Suoranta   +3 more
openaire   +2 more sources

The Effect of Wobbling on the Welding Characteristics in Al/Cu Fiber Laser Welded Joints

The International Journal of Advanced Manufacturing Technology, 2023
Abstract The IR laser welding of aluminum and copper materials for lithium-ion battery cells has limitation due to unsatisfactory joints strength caused by their low absorptivity and high reflectivity. To overcome these problems, this study has applied beam oscillation to increase the joint area of welded joints.
Hye-Seul Yoon, Hee-Seon Bang
openaire   +1 more source

Mechanisms for Improvement of Weld Appearance in Autogenous Fiber Laser Welding of Thick Stainless Steels

Metals, 2018
High-power fiber laser welding is an efficient and effective way to produce heavy section structures. However, there is a significant challenge in producing the welds with free of imperfections such as nail-head-shaped welds, spatters, and root sagging ...
Mingjun Zhang, Shun Chen, Yingzhe Zhang, Genyu Chen, Zhuming Bi   +4 more
doaj   +1 more source

Weld root instabilities in fiber laser welding

Journal of Laser Applications, 2015
Fiber laser welding and fiber laser-arc hybrid welding have been developed into very useful industrial processes over the past few years. However, the use of fiber lasers can be associated with quality problems at the weld root such as intermittent penetration, melt ejection, and humping.
Powell, J Powell, John, Ilar, T Ilar, Torbjorn, Frostevarg, J Frostevarg, Jan, Torkamany, MJ Torkamany, Mohammad J., Na, SJ Na, Suck-Joo, Petring, D Petring, Dirk, Zhang, LJ Zhang, Linjie, Kaplan, AFH Kaplan, Alexander F. H.   +7 more
openaire   +2 more sources

A study on bead-on-plate welding of AA7075 using low power fiber laser

Journal of Mechanical Engineering and Sciences, 2016
Laser welding promises the best method to produce higher strength of aluminium joints compared to conventional arc welding process. Arc welding usually produces a large heat affected zone (HAZ), which leads to lower joint strength on aluminium alloys ...
M.N.M Salleh, M. Ishak, F.R.M. Romlay, M.H. Aiman   +3 more
doaj   +1 more source

The effect of fiber laser parameters on microhardness and microstructure of duplex stainless steel

MATEC Web of Conferences, 2017
An investigation was implement to study the influence of laser power, and speed of the welding on hardness, microstructure, and penetration of laser welding bead on plate duplex stainless steel, which is not exhibited so far.
Mohammed Ghusoon R., Ishak M., Aqida S. N., Abdulhadi Hassan A.   +3 more
doaj   +1 more source

Laser Beam Welding of CubeSat 1U Structure Parts Obtained by Powder Bed Fusion

Metals, 2022
This study contributes to a possible methodology for manufacturing CubeSats using additive manufacturing and laser beam welding. Titanium connectors were constructed by selective laser melting and electron beam melting and characterized from a ...
Rafael Humberto Mota de Siqueira, Diego Javier Celentano, Milton Sergio Fernandes de Lima   +2 more
doaj   +1 more source