Multi-objective optimisation for indentation rate, nugget diameter and tensile load in resistance spot welding using Taguchi-based grey relational analysis

2021 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
Celalettin Yuce
Keyword(s):  
Grey Relational Analysis ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Tensile Load ◽  
Multi Objective ◽  
Resistance Spot ◽  
Relational Analysis ◽  
Nugget Diameter ◽  
Grey Relational

scholarly journals Multi-objective Optimization of Titanium Alloy through Orthogonal Array and Grey Relational Analysis in WEDM

2014 ◽  
Vol 15 ◽  
pp. 832-840 ◽  
Author(s):  
J.B. Saedon ◽  
Norkamal Jaafar ◽  
Mohd Azman Yahaya ◽  
NorHayati Saad ◽  
Mohd Shahir Kasim
Keyword(s):  
Titanium Alloy ◽  
Grey Relational Analysis ◽  
Orthogonal Array ◽  
Multi Objective Optimization ◽  
Multi Objective ◽  
Relational Analysis ◽  
Grey Relational

Dynamic Electrode Force and Displacement in Resistance Spot Welding of Aluminum

2004 ◽  
Vol 126 (3) ◽  
pp. 605-610 ◽  
Author(s):  
C. T. Ji, ◽  
Y. Zhou,
Keyword(s):  
Resistance Spot Welding ◽  
Spot Welding ◽  
Welding Current ◽  
Monitoring And Control ◽  
Resistance Spot ◽  
Nugget Diameter ◽  
Electrode Force ◽  
Rate Of Increase ◽  
Process Monitoring And Control ◽  
Electrode Displacement

Dynamic electrode displacement and force were characterized during resistance spot welding of aluminum alloy 5182 sheets using a medium-frequency direct-current welder. It was found that both electrode displacement and force increased rapidly at the beginning of the welding stage and then at a reducing rate. Rates of increase in electrode displacement and force were both proportional to welding current. And both electrode displacement and force experienced a sudden drop when weld metal expulsion occurred. However, the rate of increase in electrode displacement did not reach zero during welding even for joints with sufficient nugget diameter, while electrode force peaked when a large nugget diameter was produced. Possible strategies for process monitoring and control were also discussed.

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