STM Journals Peer-reviewed research from Consortium e-Learning Network

Journal of Polymer & Composites Original Research Special issue

Optimization of Process Parameter in 3D Printing to Minimize Wear Loss and increase Tensile Strength

  1. Mayank Kumar Tiwari Department of Electrical Engineering, Motilal Nehru National Institute of Technology, Allahabad, Prayagraj
  2. Vivek Singh Department of Mechanical Engineering, Galgotias College of Engineering and Technology, Greater Noida
  3. Sachin Srivastava Department of Mechanical Engineering, LDC Institute of Technical Studies, Prayagraj
  4. Dharmendra Kumar Dubey Department of Mechanical Engineering, Shree Dhanvantary College of Engineering and Technology, Surat
  5. Mahendra Pratap Yadav Department of Mechanical Engineering, Shree Dhanvantary College of Engineering and Technology, Surat
  6. Suraj Kumar Department of Mechanical Engineering, Shree Dhanvantary College of Engineering and Technology, Surat

Abstract

Additive Manufacturing (AM) and especially Fused Deposition Modeling (FDM) has emerged as a very versatile process of manufacturing polymer components with complex and highly-integrated geometries. Polylactic Acid (PLA) is a favorite of the many thermoplastic FDM materials because of its biodegradability, easy processing and predictable mechanical properties. The study aimed at maximizing critical parameters in FDM process in order to reduce wear loss and also increase tensile strength of PLA components. To achieve accuracy and comparability of results, test samples were fabricated in conformity with ASTM D638 requirements of tensile testing, and ASTM G99 wear characterization requirements. The experimental matrix was designed using a Taguchi L9 orthogonal array, which included the controlled variations in the infill density, bed temperature and nozzle temperature. Performance of the wear in the pin-on-disc tribometer was measured at constant rotational velocity of 300 rpm and with loads of 5 kg and 10 kg applied over a 60-minute period. Tensile strength test was conducted in a Universal Testing Machine at standard loading conditions. The experimental results reveal that build orientation alongside the optimized thermal and infill settings are issues that are important to the ultimate wear resistance and mechanical strength of the printed samples of PLA. The study will wrap up by suggesting an ideal combination of FDM parameters which will increase the overall functionality performance and reliability of PLA components in real engineering applications.

Keywords

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