Journal of Engineering
College of Engineering | University of Baghdad
Journal Website
ISSN:
1726-4073
eISSN:
2520-3339
Statistics
No. of publications:
2431
No. of views:
1488610
No. of Scopus citations:
19
No. of Crossref citations:
2233
Publication Date
Tue Jul 01 2025
Journal Name
Journal Of Engineering
TOPSIS vs Quality Loss Function Multi-Criteria Optimization of Mechanical Performance in Laser Spot Welding Process
Laser spot welding process
Mechanical properties
Tensile test
Joint strength
Modulus of elasticity
PMMA material
When selecting a material for product design, the focus is on its mechanical properties, a standard requirement in most applications. This paper’s research aimed to determine if better calibration of polymethyl methacrylate (PMMA) material samples welded with laser spot welding could be achieved by verifying joint strength performance and modulus of elasticity. Tensile tests were conducted using a universal testing machine with a 100 kN load capacity. Parameters studied included laser power, welding velocity, laser focus diameter, and spot geometric size. An orthogonal L9 array with three levels was used. Multi-objective optimization techniques TOPSIS-Quality Loss Function were used, and the results were compared. It w
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