Aerospace series. Weldments and brazements for aerospace structures. Joints of metallic materials by laser beam welding. Quality of weldments

2015 ◽  
Keyword(s):  
Laser Beam ◽  
Laser Beam Welding ◽  
Metallic Materials ◽  
Welding Quality ◽  
Aerospace Structures

Laser beam welding quality monitoring system based in high-speed (10 kHz) uncooled MWIR imaging sensors

2015 ◽  
Author(s):  
Rodrigo Linares ◽  
German Vergara ◽  
Raúl Gutiérrez ◽  
Carlos Fernández ◽  
Víctor Villamayor ◽  
...  
Keyword(s):  
Laser Beam ◽  
Monitoring System ◽  
High Speed ◽  
Laser Beam Welding ◽  
Quality Monitoring ◽  
Welding Quality ◽  
Imaging Sensors

scholarly journals Weld speed effects on quality of Ti/Al dissimilar metal joints using laser beam welding

2017 ◽  
Vol 1 (1) ◽  
pp. 57
Author(s):  
K. Kalaiselvan ◽  
A. Elango ◽  
N.M. Nagarajan
Keyword(s):  
Laser Beam ◽  
Laser Beam Welding ◽  
Dissimilar Metal

Investigations on Seam Quality in Laser Beam Welding of Contaminated, Zinc Coated Sheets

2005 ◽  
Vol 6-8 ◽  
pp. 187-194 ◽  
Author(s):  
A. Blankl ◽  
Manfred Geiger
Keyword(s):  
Laser Beam ◽  
Laser Beam Welding ◽  
Zinc Coating ◽  
Cost Savings ◽  
Production Costs ◽  
High Porosity ◽  
Welding Seam ◽  
Welding Operation ◽  
The Impact

The customers’ demand for high quality and low cost products with rising functionality forces the enterprises to cost savings. In production these cost savings can be accomplished by simplification or omission of handling operations in the process chain. In laser beam welding of stamped sheet metals a previous cleaning of the sheets is usually necessary to guarantee a sufficient seam quality at a lap joint. Due to the recent trend towards low use of lubricants in forming operations the question arises, whether this process could be avoided in order to lower the production costs. The disadvantage of this measure would be a degradation of the seam quality. This reduction shows up in a falling strength of the weld due to inclusions and pore formation. This paper deals with the impact of different types of contaminations on the quality of laser welding. Therefore several liquid (oils) and solid (metallic and non-metallic) contaminants are examined. Zinc coated sheets are investigated too, because a zinc contamination arises with these sheets in the welding operation. The zinc coating evaporates because of the high temperature and this leads to a high porosity in the welding seam. In both cases also the height of the gap between the two sheets is varied in order to investigate its influence on the weld. To reduce the effort of the investigations, but not the accuracy of the results, the laboratory trials were supported by the methods of design of experiments. After the welding operation, the quality of the welding seam is evaluated by means of its mechanical properties and tightness. The results of the investigations are discussed and the developed solution strategies are presented.

scholarly journals Weld speed effects on quality of Ti/Al dissimilar metal joints using laser beam welding

2017 ◽  
Vol 1 (1) ◽  
pp. 57
Author(s):  
K. Kalaiselvan ◽  
N.M. Nagarajan ◽  
A. Elango
Keyword(s):  
Laser Beam ◽  
Laser Beam Welding ◽  
Dissimilar Metal

Influence of laser beam incidence angle on laser lap welding quality of galvanized steels

2017 ◽  
Vol 402 ◽  
pp. 147-158 ◽  
Author(s):  
Lifang Mei ◽  
Dongbing Yan ◽  
Genyu Chen ◽  
Zhenhui Wang ◽  
Shuixuan Chen
Keyword(s):  
Laser Beam ◽  
Incidence Angle ◽  
Welding Quality ◽  
Galvanized Steels ◽  
Beam Incidence ◽  
Laser Lap Welding ◽  
Lap Welding

The Effect of Laser Beam Parameters on Welding Quality of Nitinol Alloys

2021 ◽  
pp. 219-227
Author(s):  
Zazuli Mohid ◽  
Noor Hakim Rafai ◽  
Kamaruddin Kamdani ◽  
Erween Abd Rahim
Keyword(s):  
Laser Beam ◽  
Welding Quality ◽  
Beam Parameters

Laser beam welding with a hybrid laser system

2000 ◽  
Author(s):  
G. Reinhart ◽  
J. Härtl ◽  
C. Lehner
Keyword(s):  
Laser Beam ◽  
Laser System ◽  
Laser Beam Welding ◽  
Hybrid Laser System
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