Available online at www.sciencedirect.com ScienceDirect Materials Today: Proceedings 5 (2018) 6981–6989 www.materialstoday.com/proceedings 2214-7853 © 2017 Elsevier Ltd. All rights reserved. Selection and/or Peer-review under responsibility of International Conference on Emerging Trends in Materials and Manufacturing Engineering (IMME17). IMME17 Parametric Optimization of E-Jet Based Micro Manufacturing System through Hybrid Taguchi Methodology Raju Das, Amit Kumar Ball,Shibendu Shekhar Roy * Department of Mechanical Engineering,NIT Durgapur,Durgapur 713209,India Abstract Electrohydrodynamic inkjet (E-Jet) printing is a non-contact mask less additive fabrication technology to print wide variety of functional materials in micro/nano scale. The material wastage in this manufacturing technology is almost avoided, which is the upmost importance while patterning highly expensive material. The printing performance depends on several process operational variables like applied voltage, stand-off height, nozzle diameter, applied pressure etc. By tuning these process variables through optimization route improved printing performance can be achieved. In this present study, an attempt has been made to optimize the printing performance characteristics namely, printed droplet diameter and ejection frequency with the help of Weighted Principle Component Analysis (WPCA) coupled with Taguchi methodology. Applied voltage between the nozzle and the substrate, applied pressure to the ink chamber, and the nozzle stand-off height taken as process parameters which are to be tuned. WPCA convert the multi-response problem into single objective problem, thus enabling the employability of Taguchi’s robust design approach and also the correlation among the responses if exists well taken care of. The study proposes favorable operational condition of the process and also highlighted the features of the proposed synergistic combination of WPCA with Taguchi method for predicting the optimal setting of process parameters. © 2017 Elsevier Ltd. All rights reserved. Selection and/or Peer-review under responsibility of International Conference on Emerging Trends in Materials and Manufacturing Engineering (IMME17). Keywords: Micro manufacturing; Electrohydrodynamic inkjet (E-Jet); Multi-objective optimization; Weighted principle component analysis (WPCA); Taguchi Method * Corresponding author. Tel.: +917319404064; fax: +913432543447. E-mail address: rajudas125@gmail.com