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Modeling and optimization of kerf taper and surface roughness in laser cutting of titanium alloy sheet

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Abstract

Laser cutting of titanium and its alloys is difficult due to it’s poor thermal conductivity and chemical reactivity at elevated temperatures. But demand of these materials in different advanced industries such as aircraft, automobile and space research, require accurate geometry with high surface quality. The present research investigates the laser cutting process behavior of titanium alloy sheet (Ti-6Al-4V) with the aim to improve geometrical accuracy and surface quality by minimizing the kerf taper and surface roughness. The data obtained from L27 orthogonal array experiments have been used for developing neural network (NN) based models of kerf taper and surface roughness. A hybrid approach of neural network and genetic algorithm has been proposed and applied for the optimization of different quality characteristics. The optimization results show considerable improvements in both the quality characteristics. The results predicted by NN models are well in agreement with the experimental data.

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Authors and Affiliations

  1. Mechanical Engineering Department, Motilal Nehru National Institute of Technology Allahabad, 211004, Uttar Pradesh, India

    Arun Kumar Pandey & Avanish Kumar Dubey

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  1. Arun Kumar Pandey
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  2. Avanish Kumar Dubey
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Correspondence to Avanish Kumar Dubey.

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Recommended by Associate Editor Young Whan Park

Arun Kumar Pandey has received his M. Tech degree in production from M.I.T.S. Gwalior (RGTU University Bhopal) Madhya Pradesh, India and is now research scholar at M.N.N.I.T. Allahabad, (Uttar Pradesh), India. He has published many papers at reputed International journals and conferences. His area of interest is Laser Material processing, Nonconventional machining and applications of Artificial Intelligence and Design of Experiment techniques in various advanced machining processes. He is reviewer of various reputed international journals and also, life time member of ISTE.

Avanish Kumar Dubey has completed B.E. (Production & Industrial Engineering), M.Tech. (CAD/ CAM) and Ph.D. (Mechanical) from MNNIT Allahabad (Uttar Pradesh), India. He has published many papers in various refereed International & National journals and conferences. He is now working as Associate Professor in Mechanical Engineering Department, MNNIT Allahabad (Uttar Pradesh), India. He is life time member of Institution of Engineers (India). His area of interest is Laser Material processing, Nonconventional machining processes, Design of experiment applications in manufacturing processes and applications of Artificial Intelligence in advanced machining processes. He is a member of editorial boards of some refereed international journals and also reviewer of many refereed international journals of repute.

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Pandey, A.K., Dubey, A.K. Modeling and optimization of kerf taper and surface roughness in laser cutting of titanium alloy sheet. J Mech Sci Technol 27, 2115–2124 (2013). https://doi.org/10.1007/s12206-013-0527-7

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  • DOI: https://doi.org/10.1007/s12206-013-0527-7

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