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General Information
    • ISSN: 1793-8198 (Print)
    • Abbreviated Title: Int. J. Mater. Mech. Manuf.
    • Frequency: Bimonthly
    • DOI: 10.18178/IJMMM
    • Editor-in-Chief: Prof. Ian McAndrew
    • Co-editor-in-Chief: Prof. K. M. Gupta
    • Executive Editor: Cherry L. Chen
    • Abstracting/Indexing: Inspec (IET), Chemical Abstracts Services (CAS),  ProQuest, Crossref, Ulrich's Periodicals Directory,  EBSCO.
    • E-mail ijmmm@ejournal.net

Prof. Ian McAndrew
Capitol Technology University, USA
It is my honor to be the editor-in-chief of IJMMM. I will do my best to work with the editorial team and help make this journal better.

IJMMM 2017 Vol.5(4): 251-254 ISSN: 1793-8198
DOI: 10.18178/ijmmm.2017.5.4.329

A Study on Surface Quality of Laser Drilled Holes: Parametric Optimization Using Harmony Search Algorithm

S. Chatterjee, K. Abhishek, and S. S. Mahapatra
Abstract—Micro-machining of stainless steel is difficult in conventional machining process due to excessive heat generation and micro-structural changes. Hence, lasers have been widely used to localize the heat affected zone in order to control the micro-structural changes. However, the major difficulty arises while performing laser drilling is the formation of spatter which affects the quality of holes. The present study focuses on reduction of spatter area in CO2 laser drilling of stainless steel using Taguchi method embedded with Harmony search algorithm. The influence of machining parameters such as flushing pressure, laser power and pulse frequency on spatter area has been studied through Analysis of variance (ANOVA). It has been observed that flushing pressure and pulse frequency are the most influencing factors on formation of spatter. Harmony search algorithm has been used to evaluate the optimal parametric setting that attempts to minimize spatter area.

Index Terms—CO2 laser, harmony search (HS) algorithm, laser drilling, spatter.

S. Chatterjee and S. S. Mahapatra are with the Department of Mechanical Engineering, National Institute of Technology, Rourkela, Odisha 769008 India (mrsumanmech@gmail.com, mahapatrass2003@gmail.com).
K. Abhishek is with the Faculty of Science and Technology, Icafai Foundation for Higher Education, Hyderabad, India (krabhishihek1987@gmail.com).


Cite: S. Chatterjee, K. Abhishek, and S. S. Mahapatra, "A Study on Surface Quality of Laser Drilled Holes: Parametric Optimization Using Harmony Search Algorithm," International Journal of Materials, Mechanics and Manufacturing vol. 5, no. 4, pp. 251-254, 2017.

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