scholarly journals USE OF FACTOR ANALYSIS METHODS IN THE STUDY OF THE STRUCTURAL STATE OF THE WELDED JOINT AFTER LASER WELDING

2021 ◽  
pp. 91-100
Author(s):  
D.V. LAUKHIN ◽  
O.V. BEKETOV ◽  
I.A. TIUTEREV ◽  
Yu.S. SLUPSKA ◽  
N.O. ROTT
Keyword(s):  
Factor Analysis ◽  
Laser Welding ◽  
Physical Meaning ◽  
Structural State ◽  
Welded Joint ◽  
Welding Process ◽  
Mathematical Apparatus ◽  
Mathematical Methods ◽  
Stage Of Development ◽  
The Relationship

Formulation of the problem. The use of the mathematical apparatus of factor analysis allows us to investigate the stability of correlations between individual variables. It is the correlations between the variables themselves, as well as between the variables and the selected factors that contain the basic information about the stage of development. The results of factor analysis will be informative if they can be interpreted from the point of view of the physical meaning of both the process under study and the factors that were obtained as a result of the application of factor analysis. Therefore, when identifying factors that will be used for further analysis, one should be guided not only by mathematical methods, but also by the physical meaning of identifying factors. Thus, the use of factor analysis in the study of material science problems (for example, the welding process) is reduced to the search and analysis of the most significant characteristics of the process (factors) among the data array that can be obtained during the process under study. Purpose. Investigation of the relationship between the structural state in the zones of the welded joint after laser welding of specimens from steel 10KhSND using the mathematical apparatus of factor analysis. Conclusion. In this work, the study of the relationship of the distribution of the structural state over the zones of the welded joint was carried out using the mathematical apparatus of factor analysis.

Fiber Laser Welding of Noncombustible Magnesium Alloy

2008 ◽  
Vol 580-582 ◽  
pp. 479-482 ◽  
Author(s):  
Yuji Sakai ◽  
Kazuhiro Nakata ◽  
Takuya Tsumura ◽  
Mitsuji Ueda ◽  
Tomoyuki Ueyama ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Magnesium Alloy ◽  
Laser Welding ◽  
Fiber Laser ◽  
Vickers Hardness ◽  
Laser Power ◽  
Welded Joint ◽  
Welding Process ◽  
Fiber Laser Welding ◽  
Laser Welding Process

Noncombustible magnesium alloy AMC602 (Mg-6mass%Al-2mass%Ca) extruded sheet of 2.0mm thickness was successfully welded using a fiber laser welding process at welding speed of 10m/min at 3kW laser power. Tensile strength of the welded joint was about 82 to 88% of that of the base metal. Vickers hardness, tensile strength and micro structural properties are also discussed.

scholarly journals Fuzzy C-Means Partition Cluster Analysis and Validation Studies on a Subset of CiteScore Dataset

2019 ◽  
Vol 8 (9S3) ◽  
pp. 105-107
Keyword(s):  
Cluster Analysis ◽  
Laser Welding ◽  
Validation Studies ◽  
Welded Joint ◽  
Experimental Studies ◽  
Pulsed Laser ◽  
Welding Process ◽  
Pulsed Laser Welding ◽  
Fuzzy C Means

The article deals with promising areas of application of pulsed laser welding for products made of silver-based alloys. The results of experimental studies to improve the quality of the welded joint and the efficiency of the welding process with the use of activated absorption additives are presented

scholarly journals Fatigue properties of the fillet welded joint for non-load carrying type using hot-wire laser welding process

2015 ◽  
Vol 81 (828) ◽  
pp. 15-00119-15-00119
Author(s):  
Hiroyuki AKEBONO ◽  
Ryoichi MORIKAWA ◽  
Tadashi KADO ◽  
Masahiko KATO ◽  
Atsushi SUGETA
Keyword(s):  
Laser Welding ◽  
Welded Joint ◽  
Welding Process ◽  
Fatigue Properties ◽  
Hot Wire ◽  
Load Carrying ◽  
Laser Welding Process

Analysis about the Jointing Status for Dissimilar Metals of Steel with Magnesium

2012 ◽  
Vol 233 ◽  
pp. 374-379 ◽  
Author(s):  
Zong Xiang Yao ◽  
De Ping Jiang ◽  
Chao Pan ◽  
Xiao Ming Wang
Keyword(s):  
Adverse Effect ◽  
Intermetallic Compound ◽  
Laser Welding ◽  
Welded Joint ◽  
Welding Process ◽  
Dissimilar Metals ◽  
Hybrid Welding ◽  
Pressure Welding ◽  
Diffusion Brazing ◽  
Welding Pressure

The research status of welding process between magnesium with steel have been surveyed．This article detailed the laser welding, Laser-TIG hybrid welding, pressure welding,diffusion brazing. The paper pointed out that it is a prominent problem of magnesium to be oxidated easily and existing intermetallic compound in the joint, which will produce adverse effect to property of welded joint. So how to control morphology and existence state of intermetallic compound (IMC) is the key for quality connectors in joining of magnesium with steel.

Numerical Modeling of Thermoplastic Films in a Laser Welding Process

2005 ◽  
Author(s):  
Richard A. Whalen ◽  
Gregory J. Kowalski
Keyword(s):  
Laser Welding ◽  
Welding Process ◽  
Surface Cooling ◽  
Simulation Code ◽  
Transmission Laser Welding ◽  
Lap Welding ◽  
The Relationship ◽  
Thermo Physical Properties ◽  
Laser Welding Process ◽  
Moving Layers

A numerical simulation code is used to investigate the size of the heat affected zone (HAZ) and the onset of thermal damage in a short pulsed transmission laser welding process. The welding process involves the lap welding of two thin 30 microns thick, moving layers, of thermoplastic films. The investigated welding conditions are transparent material over a semi-transparent or opaque material and two transparent materials over a reflective backing. The results provide temperature profiles that illustrate the relationship between; surface cooling, laser intensity, velocity feed rates and material thermo-physical properties.

Experimental Study of Laser Welding Process and Properties of 2205 Duplex Stainless Sheet Steels

2016 ◽  
Vol 861 ◽  
pp. 141-146 ◽  
Author(s):  
Shan Shan Hu ◽  
Bi Tao Yang ◽  
Bo Dong Zeng ◽  
Dong Rui Zheng ◽  
Zi Li Yang
Keyword(s):  
Stainless Steel ◽  
Laser Welding ◽  
Welding Process ◽  
Welding Parameters ◽  
Test Surface ◽  
Sheet Steels ◽  
Steel Welds ◽  
Pulsed Nd:Yag Laser Welding ◽  
The Relationship ◽  
Overlap Rate

2205 duplex (austenitic-ferritic) stainless steel has a good weldability and an excellent corrosion resistance. The good weldability is achieved when in close to 50-50 ferrite-austenite ratio. In this study, the welding process and properties were investigated by pulsed Nd:YAG laser welding. Tensile test, surface microhardness test, surface topography and microstructures of 2205 duplex stainless steel welds were performed under different welding speeds, input currents, pulse widths, frequencies and defocus distance. The relationship among them was revealed and the optimal welding parameters were obtained. The results showed in the condition of I = 160 A, T = 5 ms, f = 25 Hz, V = 500 mm/min and Z =-1 mm, the amount of ferrite and austenite in welds was roughly same, overlap rate of solder joints was above 78% and the weldability was good.

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