TOPSIS vs Quality Loss Function Multi-Criteria Optimization of Mechanical Performance in Laser Spot Welding Process
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...
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| Format: | Article |
| Language: | English |
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University of Baghdad
2025-07-01
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| Series: | Journal of Engineering |
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| Online Access: | https://www.joe.uobaghdad.edu.iq/index.php/main/article/view/3651 |
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| author | Ruba Khalil Bassim Bachy |
| author_facet | Ruba Khalil Bassim Bachy |
| author_sort | Ruba Khalil |
| collection | DOAJ |
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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 was discovered that the first experiment among the nine experiments had the best multi-quality features with the following parameters: laser power of 10 W, welding velocity of 10 mm/s, laser focus diameter of 0.002 mm, and spot geometric size of 4 mm. It was observed that the geometric spot design is the most effective parameter for quality at a small size. It was proven that the smaller size of the geometric spot increases the strength and stiffness of the welded product.
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| format | Article |
| id | doaj-art-94530bbd34a64143b0d801f5e89cdd28 |
| institution | DOAJ |
| issn | 1726-4073 2520-3339 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | University of Baghdad |
| record_format | Article |
| series | Journal of Engineering |
| spelling | doaj-art-94530bbd34a64143b0d801f5e89cdd282025-08-20T03:16:58ZengUniversity of BaghdadJournal of Engineering1726-40732520-33392025-07-0131710.31026/j.eng.2025.07.02TOPSIS vs Quality Loss Function Multi-Criteria Optimization of Mechanical Performance in Laser Spot Welding ProcessRuba Khalil0Bassim Bachy1Department of Mechanical Engineering, College of Engineering, University of BaghdadDepartment of Mechanical Engineering, College of Engineering, University of Baghdad 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 was discovered that the first experiment among the nine experiments had the best multi-quality features with the following parameters: laser power of 10 W, welding velocity of 10 mm/s, laser focus diameter of 0.002 mm, and spot geometric size of 4 mm. It was observed that the geometric spot design is the most effective parameter for quality at a small size. It was proven that the smaller size of the geometric spot increases the strength and stiffness of the welded product. https://www.joe.uobaghdad.edu.iq/index.php/main/article/view/3651Laser spot welding processMechanical propertiesTensile testJoint strength Modulus of elasticityPMMA material |
| spellingShingle | Ruba Khalil Bassim Bachy TOPSIS vs Quality Loss Function Multi-Criteria Optimization of Mechanical Performance in Laser Spot Welding Process Journal of Engineering Laser spot welding process Mechanical properties Tensile test Joint strength Modulus of elasticity PMMA material |
| title | TOPSIS vs Quality Loss Function Multi-Criteria Optimization of Mechanical Performance in Laser Spot Welding Process |
| title_full | TOPSIS vs Quality Loss Function Multi-Criteria Optimization of Mechanical Performance in Laser Spot Welding Process |
| title_fullStr | TOPSIS vs Quality Loss Function Multi-Criteria Optimization of Mechanical Performance in Laser Spot Welding Process |
| title_full_unstemmed | TOPSIS vs Quality Loss Function Multi-Criteria Optimization of Mechanical Performance in Laser Spot Welding Process |
| title_short | TOPSIS vs Quality Loss Function Multi-Criteria Optimization of Mechanical Performance in Laser Spot Welding Process |
| title_sort | topsis vs quality loss function multi criteria optimization of mechanical performance in laser spot welding process |
| topic | Laser spot welding process Mechanical properties Tensile test Joint strength Modulus of elasticity PMMA material |
| url | https://www.joe.uobaghdad.edu.iq/index.php/main/article/view/3651 |
| work_keys_str_mv | AT rubakhalil topsisvsqualitylossfunctionmulticriteriaoptimizationofmechanicalperformanceinlaserspotweldingprocess AT bassimbachy topsisvsqualitylossfunctionmulticriteriaoptimizationofmechanicalperformanceinlaserspotweldingprocess |