Results 21 to 30 of about 1,906,169 (166)

Possible explanations for different surface quality in laser cutting with 1 micron and 10 microns beams [PDF]

, 2012
In laser　cutting　of　thick　steel　sheets,　quality　difference　is　observed　between　cut　surfaces　obtained　with 1 micron and 10 micron laser beams. This paper investigates physical mechanisms for this interesting and important problem of the wavelength ...
Remy Fabbro, Koji Hirano, FABBRO, Rémy, HIRANO, Koji   +3 more
core   +1 more source

Laser micro welding with fiber lasers for battery and fuel cell based electromobility

Journal of Advanced Joining Processes, 2022
New challenges are arising within the joining processes in the field of electromobility. Joining highly reflective metals and dissimilar materials such as copper and aluminum – often encountered in battery electrical vehicles – is viewed as a challenging
E Haddad, W.S. Chung, O. Katz, J. Helm, A. Olowinsky, A. Gillner   +5 more
doaj   +1 more source

Research on Heat Source Model and Weld Profile for Fiber Laser Welding of A304 Stainless Steel Thin Sheet

Advances in Materials Science and Engineering, 2018
A heat source model is the key issue for laser welding simulation. The Gaussian heat source model is not suitable to match the actual laser weld profile accurately.
Peizhi Li, Yu Fan, Chonghao Zhang, Zhiyuan Zhu, Wenteng Tian, Anmin Liu   +5 more
doaj   +1 more source

Study and Characterization of EN AW 6181/6082-T6 and EN AC 42100-T6 Aluminum Alloy Welding of Structural Applications: Metal Inert Gas (MIG), Cold Metal Transfer (CMT), and Fiber Laser-MIG Hybrid Comparison

Metals, 2020
The present research investigates the effects of different welding techniques, namely traditional metal inert gas (MIG), cold metal transfer (CMT), and fiber laser-MIG hybrid, on the microstructural and mechanical properties of joints between extruded EN
Giovanna Cornacchia, Silvia Cecchel
doaj   +1 more source

MULTIVARIATE OPTIMIZATION OF LASER TRANSMISSION WELDING OF NATURAL FIBER-REINFORCED POLYPROPYLENE [PDF]

Proceedings on Engineering Sciences
This study investigates laser transmission welding of 15 wt% natural fiber-reinforced polypropylene to 0.2 wt% carbon black doped polypropylene using empirical models developed using response surface methodology and the central composite design of ...
Munyaradzi Kapuyanyika , Albert Uchenna Ude , Vivekanandhan Chinnasamy   +2 more
doaj   +1 more source

Picosecond laser welding of similar and dissimilar materials [PDF]

, 2014
We report picosecond laser welding of similar and dissimilar materials based on plasma formation induced by a tightly focused beam from a 1030 nm, 10 ps, 400 kHz laser system.
Thomson, Robert R., Carter, Richard M.; id_orcid, Hand, Duncan P.; id_orcid, Chen, Jianyong, Shephard, Jonathan D.; id_orcid   +4 more
core   +1 more source

Robotic Nd:YAG Fiber Laser Welding of Ti-6Al-4V Alloy

Metals, 2017
In the present study, Ti6Al4V titanium alloy plates were joined using a robotic fiber laser welding method. The laser welding process was carried out at two different welding speeds.
Ceyhun Köse, Engin Karaca
doaj   +1 more source

Direct keyhole laser welding of aluminum alloy AA5754 to titanium alloy Ti6Al4V [PDF]

, 2014
The tensile strength of direct AA5754/Ti6Al4V joints performed by high speed Yb:YAG laser welding is found to be determined by morphology and phase content of dissimilar interface formed between contacting Al-rich and Ti-rich melted zones. Three types of
CICALA, E, Tomashchuk, I, PEYRE, Patrice, Sallamand, P, SALLAMAND, Pierre, TOMASHCHUK, Iryna, GREVEY, D   +6 more
core   +1 more source

A New Method to Assess Fiber Laser Welding Quality of Stainless Steel 304 Based on Machine Vision and Hidden Markov Models

IEEE Access, 2020
High-power fiber laser welding has a broad range of applications in industrial processing and modern intelligent manufacturing, but how to assess the quality of laser welding has always been a concern. In the welding process, the geometric feature of the
Xin Tang, Ping Zhong, Lingling Zhang, Jun Gu, Zhaopeng Liu, Yinrui Gao, Haowei Hu, Xutong Yang   +7 more
doaj   +1 more source

Investigation of Laser Butt Welding of AISI 304L and Q235 Steels Based on Numerical and Experimental Analyses

Metals, 2022
The fiber laser butt welding of AISI 304L and Q235 low-carbon steel is performed in this study. An integrated heat source combined with an asymmetric double-ellipsoidal heat source and a cylindrical heat source is designed to perform the numerical ...
Yanxi Zhang, Xiangdong Gao, Deyong You, Xiaoming Jiang, Wenjun Ge   +4 more
doaj   +1 more source