John Arputharaj

John Arputharaj

School of Electrical and Mechanical Engineering

Faculty of Sciences, Engineering and Technology

My research focuses on advanced manufacturing, with a particular emphasis on Laser Powder Bed Fusion (L-PBF) of titanium alloys (e.g., Ti6Al4V) and bimetallic printing, particularly Fe-Cu systems. With a strong foundation in materials engineering, my expertise lies in establishing material-property correlations and understanding their impact on the performance and reliability of additively manufactured components. I have investigated manufacturability constraints and geometric capabilities of thin cross-sections, examined process parameter influences, and analyzed microstructural evolution in L-PBF. A key aspect of my work involves studying the continuous cooling behavior of L-PBF Ti6Al4V at varying rates, developing mathematical models to correlate microstructural transformations with thermal conditions. Additionally, my recent research extends to bimetallic printing, particularly Fe-Cu systems, exploring interfacial bonding, phase stability, and thermal compatibility to optimize mechanical performance and functional integration in multi-material manufacturing. I am particularly passionate about optimizing additive manufacturing processes to enhance material performance, structural integrity, and defect mitigation. By integrating metallurgical insights with advanced process control, my research aims to ensure repeatability and reliability in AM-produced components.

  • Journals
    Year Citation
    2025 Arputharaj, J. D., Nafisi, S., & Ghomashchi, R. (2025). Compression Behaviour of L-PBF-Manufactured Ti6Al4V BCC Lattices. Metals, 15(2), 220.
    DOI
    2025 Arputharaj, J. D., Nafisi, S., Dareh Baghi, A., & Ghomashchi, R. (2025). Continuous cooling transformation of L-PBF Ti64. Journal of Alloys and Compounds, 1021, 179700.
    DOI
    2024 Arputharaj, J. D., Nafisi, S., & Ghomashchi, R. (2024). Printability and Geometric Capability of L-Pbf in Manufacturing Thin Circular Cross-Sections. Journal of Manufacturing Processes, 129, 319-340.
    DOI Scopus3
    2024 Basak, A. K., Kurdi, A., Radhika, N., Arputharaj, J., Prakash, C., Pramanik, A., & Shankar, S. (2024). Compressive mechanical properties of thermal sprayed AlCoCrFeNi high entropy alloy coating. Journal of Alloys and Compounds, 1003, 175721.
    DOI Scopus10
    2024 Arputharaj, J. D., Nafisi, S., & Ghomashchi, R. (2024). Additive manufacturing of continuous wave and pulsed wave L-PBF Ti64 thin cross sections. Progress in Additive Manufacturing, 24 pages.
    DOI Scopus1

  • Conference Papers
    Year Citation
    2024 Arputharaj, J. D., Nafisi, S., & Ghomashchi, R. (2024). Effect of Laser Irradiation Mode on L-PBF Ti6Al4V Thin Sections. In Minerals, Metals and Materials Series (pp. 273-289). Online: Springer Nature Switzerland.
    DOI
    2023 Arputharaj, J. D., Nafisi, S., & Ghomashchi, R. (2023). LPBF Fabrication of Thin Cross Sections: Challenges and Printability. In Minerals, Metals and Materials Series (pp. 150-164). Online: Springer Nature Switzerland.
    DOI Scopus3

I'm currently involved in tutoring/lecturing the following subjects

Tutor/Lecturer - Materials and Manufacturing

Tutor/Lecturer - Material Selection and Failure Analysis

Tutor - Materials 1

Tutor - Introduction to Engineering

Tutor - Research Methods and Project Management

Tutor - Communication and Critical Thinking

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