Multi-response Optimization of Nd:YAG Laser for Micro-drilling of 304 Stainless Steel Using Grey Relational Analysis

  • Alok BaraEmail author
  • Sarat Kumar Sahoo
  • Sunita Singh Naik


The paper addressed an effective approach for the manufacturing of a product using multi-response optimization technique of Nd:YAG laser drilling process parameter of 304 stainless steel. Micro-drilling (diameter less than 1 mm) is a challenging task. Based on orthogonal technique the experiment carried out and grey relational analysis used to optimize the process parameter. The response characteristics, i.e. taper angle, spatter diameter and recast layer is significantly influenced by power, nozzle standoff and assisted gas pressure. The response table and response graph for each level of machining parameter were obtained from grey relational grade. Analysis of variance (ANOVA) was performed to percentage of contribution and significant process parameter during the micro-drilling process. The confirmation experiment has been performed on suggested optimal level of control factor to verify the result. To know the exact combination of Nd:YAG laser parameter, the multi-response technique of is very useful in additive manufacturing.


Laser micro-drilling 304 Stainless steel Characteristics Grey relational analysis Multi performance characteristics 


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Copyright information

© Springer Science+Business Media Singapore 2017

Authors and Affiliations

  • Alok Bara
    • 1
    Email author
  • Sarat Kumar Sahoo
    • 1
  • Sunita Singh Naik
    • 1
  1. 1.Department of Mechanical EngineeringVSSUTBurlaIndia

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