Effect of Specimen Dimensions on Yield Shear Stress in Torsion Testing of AISI 1020 Steel by Using GRA
DOI:
https://doi.org/10.51983/arme-2019.8.1.2458Keywords:
Torsion Testing, Grey Relational Analysis, Yield Shear Stress, Taguchi Method, Nadai Method, Smaller-The-Better, ANOVAAbstract
This current research work aims at studying the influence of hollow specimen dimensions such as inner diameter, useful length, outer diameter and fillet radius on yield shear stress of mild steel (AISI 1020) in torsion testing. L9 orthogonal array was selected for design of experiments. Three output parameters of torsion testing such as modulus of rigidity, yield shear stress and ultimate shear stress were calculated by using Nadai method. Single objective optimization was done by using Taguchi method. Further effort was made to simultaneously optimize the specimen dimensions using grey relational analysis (GRA). The yield shear stress was found maximum for the specimen dimensions with outer diameter of 12 mm, inner diameter 3.8 mm, useful length 16.0 mm, and fillet radius 2.0 mm. The confirmation test was also carried out to check the GRA results.
References
S. P. Timonshenko, and D.H.Young, “Elements of strength of materials”, Fifth Edition, citton educational publishing, INC., pp 70 -94, 1988.
G.E. Dieter, “The Torsion Test in Mechanical Metallurgy”, Chapter 10, Third Edition, Mc Graw-Hill, Inc., New York, 1986.
N.M. Zarroug, R. Padmanabhan, B. J. MacDonald, P. Young, and M.S.J. Hashmi, “Mild steel (En8) rod tests under combined tension–torsion loading”, Journal of Materials Processing Technology., Vol. 143–144, pp.807-813, 2013.
A. Graber, K. Pohlandt, and K. Lange, “A New Approach to the Torsion Test for Determining Flow Curves”, CIRP Annals – Manufacturing Technology, Vol. 38, pp. 223-226, 1989.
A. Pavel Mossakovsky, K. F edor Antonov, and A .Lilia, Kostyreva, “Investigation of Failure Criterion in Dynamic Torsion Tests with Solid Cylindrical Specimens”, 8th European LS-DYNA Users Conference, pp.1423-1430, 2011.
F. Berto, M. Elices, P. Lazzarin, and M. Zappalorto, “Fracture behaviour of notched round bars made of PMMA subjected to torsion at room temperature”, Engineering Fracture Mechanics., Vol. 90, pp.143-160, 2012.
Han-Chin Wu, Zhiyou Xu, and Paul T. Wang, “Torsion test of aluminium in the large strain range”, International Journal of Plasticity, Vol.13, pp.873-892, 1997.
Jose Divo Bressan, and Ricardo Kirchhof Unfer, “Construction and validation tests of a torsion test machine”, Journal of Materials Processing Technology, Vol.179, pp.23-29, 2006.
R. Unal and E. Dean, “Taguchi approach to design optimization for quality and cost: an overview”, Annual Conference of the International Society of Parametric Analysts 1, pp 1-10, 1991.
Milan Kumar Das, koushik kumar,Tapan Kr Barman,Prasanta Sahoo, “Optimization of process paramaters in plasma arc cutting of EN 31 steel based on MRR and multiple roughness characteristics using Grey Relational Analysis”, Procedia material science, 5, pp.1550-1559, 2014.
PSG College of Technology, Design data book, Kalaikathir Achchagam, 2010.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2019 The Research Publication
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
