Optimizating Pitting Corrosion in 3.5 N NaCl Medium of Pulsed Current Micro Plasma Arc Welded AISI 304L Sheets Using Genetic Algorithm

Authors

  • Dr. Kondapalli Siva Prasad Professor, Mechanical Engineering, Anil Neerukonda Institute of Technology and Sciences, Visakapatnam
  • Chalamalasetti Srinivasa Rao AU College of Engineering, Andhra University, Visakhapatnam, India
  • Damera Nageswara Rao Centurion University of Technology & Management, Odisha, India

Keywords:

AISI 304L, pulsed current, micro plasma arc welding, pitting corrosion, NaCl, genetic algorithm

Abstract

Austenitic stainless steel sheets have gathered wide acceptance in the fabrication of components, which require high temperature resistance and corrosion resistance, such as metal bellows used in expansion joints in aircraft, aerospace and petroleum industry. In case of single pass welding of thinner sections of this alloy, pulsed current micro plasma arc welding (PCMPAW) was found beneficial due to its advantages over the conventional continuous current process. This paper highlights the development of empirical mathematical equations using multiple regression analysis, correlating various process parameters to pitting corrosion rates in PCMPAW of AISI 304L sheets in 3.5 normal NaCl. The experiments were conducted based on a five factor, five level central composite rotatable design matrix. A genetic algorithm (GA) was developed to optimize the process parameters for minimizing the pitting corrosion rates.

Author Biographies

  • Dr. Kondapalli Siva Prasad, Professor, Mechanical Engineering, Anil Neerukonda Institute of Technology and Sciences, Visakapatnam

     Professor,
    Mechanical Engineering,
    Anil Neerukonda Institute of Technology and Sciences,
    Visakapatnam

  • Chalamalasetti Srinivasa Rao, AU College of Engineering, Andhra University, Visakhapatnam, India
    Associate Professor, Department of Mechanical Engineering
  • Damera Nageswara Rao, Centurion University of Technology & Management, Odisha, India
    Vice Chancellor

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Published

2019-04-17

Issue

Vol. 2 No. 1-3 (2012)

Section

Articles

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