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Enhancement of TIG welding performance on carbon steel by Taguchi-TOPSIS optimization

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Abstract

In this research, the Taguchi-based TOPSIS technique was utilized to optimize TIG welding parameters for carbon steel. Five Input factors included welding current CT (80,100 A), gas flow rate GF (10,15 l/min), tip angle TP (30°,60°), Electrode diameter ED (2.4, 3.2 mm) and welding speed WS (100, 150 mm/min) with Taguchi’s L12 orthogonal array employed for experimental design. Tests were conducted to evaluate joint hardness and Tensile strength, with specimen assignment based on performance scores via TOPSIS. The ratios of signal to noise for each factor were determined, ranking the welding parameters based on the delta value, in order to evaluate the impact of certain input variables on the output parameters. ANOVA was employed to identify the most significant parameter, and a regression equation was developed to establish a mathematical model correlating the S/N ratio of performance scores with process parameters. Validation was performed through a confirmatory experiment using optimized parameters, yielding results consistent with the proposed approach. TOPSIS identified the combination CT1-GF2-TP1-ED2-WS1 as optimal: 80 A current, 15 l/min gas flow, 60° tip angle, 3.2 mm electrode diameter, and 100 mm/min welding speed.

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Authors and Affiliations

  1. Department of Mechanical Engineering, JCT college of Engineering and Technology, Coimbatore, India

    P. Suresh Kumar

  2. Construction Mechanical Engineer, EPC Project, Adyard Abu Dhabi LLC, Abu Dhabi, United Arab Emirates

    Vittel Rao

  3. Department of Biomedical Engineering, Saveetha School of Engineering, SIMATS, Chennai, India

    K. P. Indira

  4. Department of Biomedical Engineering, Saveetha school of Engineering, Saveetha Institute of Medical and Technical sciences, Chennai, 602 105, India

    D. Jenila Rani

  5. Department of Mechanical Engineering, BVC Engineering College (Autonomous), Odalarevu, 533210, Andhra Pradesh, India

    S. Vijayakumar

  6. Department of Mechanical Engineering, Maturi venkata subba rao (MVSR) Engineering college, Nadergul, Hyderabad, India

    R. Haranath

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  1. P. Suresh Kumar
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  2. Vittel Rao
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  3. K. P. Indira
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  4. D. Jenila Rani
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  5. S. Vijayakumar
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Contributions

Author’s contribution: S. Vijayakumar, Suresh Kumar P and Harnath- literature review , data collection regarding TOPSIS, tables preparation an d format correctionK. P. Indira, Vittel Rao and D. Jenila Rani-Figures prepartion, result and discussion part.

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Correspondence to S. Vijayakumar.

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Kumar, P.S., Rao, V., Indira, K.P. et al. Enhancement of TIG welding performance on carbon steel by Taguchi-TOPSIS optimization. Interactions 245, 109 (2024). https://doi.org/10.1007/s10751-024-01936-8

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