Dr.-Ing. Ashok Kumar Nallathambi.jpg

Dr.-Ing. Ashok Kumar Nallathambi,

Assistant Professor

 

Department of Mechanical Engineering

National Institute of Technology

Tiruchirappalli - 620015

Phone  : +91 95003 10739

Email    : nashok@nitt.edu, ashokkumar1980n@gmail.com

Education

 

2010                 Ph.D                    Faculty of Process & Systems Engineering 

                                                     Otto von Guericke University Magdeburg, Germany

2006                 M.Tech                Engineering Mechanics (Solid Mechanics)

                                                     Indian Institute of Technology Madras, India

2001                 B.E                      Mechanical Engineering 

                                                     Maduari Kamaraj UniversityPSNA CET, Dindigul, India

Work Experiences

                                From  2018               Assistant Professor

                                      June                    Department of Mechanical Engineering

                                 Onwards                  National Institute of Technology Tiruchirappalli

 

 

                                 2012  –  2018           Senior Researcher (Group leader, Lecturer)

                                                                   Otto von Guericke University Magdeburg, Germany

                                 2010 – 2012              Post-Doctoral Research Fellowship

                                                                   Otto von Guericke University Magdeburg, Germany

                                 2006 – 2007              Project Officer in Solid Mechanics Group

                                                                   Indian Institute of Technology Madras, India

                                 2001 – 2004              Lecturer in Mechanical Engineering

                                                                   Anna UniversityP.S.Y. Engg.College, India

Research Interests

                                •     Modeling and simulation of industrial processes

                                •     Solidification of metals – Micro-structure development, Thermodynamics of                                                   phases

                                •     Finite element modeling and analysis

                                •     Thermal stresses during heat treatment of metals

                                •     Flow boiling heat transfer – thermal boundary conditions for sprays and jets

                                •     Constitutive modeling of solid and mushy state of metals – Creep, Viscoplasticity

                                •     Casting defects – Hot tearing, Segregation, Porosity

Publications 

Refereed International Journals

 

10. P.K. Penumakala, A.K. Nallathambi, E. Specht, U. Urlau,, D. Hamilton, C. Dykes, Influence of process parameters on solidification length of twin-belt continuous casting, Applied Thermal Engineering, 134, 275-286.

 

9. P.K. Penumakala, A.K. Nallathambi, E. Specht, U. Urlau, P. Unifantowicz, 2015. Theoretical estimation of solidification and compensation lengths in continuous casting, Applied Thermal Engineering, (84), 286-291.

8. P. Pavan Kumar, A.K. Nallathambi, E. Specht, A. Bertram, 2012. Mechanical behaviour of mushy zone in DC casting using a viscoplastic material model, Technischemechanik 32(2), 342-357.

7. A.K. Nallathambi, M.Tyagi, E.Specht, A.Bertram, 2011.Thermomechanical analysis of direct chill casting using finite element method, Transactions of the Indian Institute of Metals (TIIM), Vol.64, Issue 1-2, pp.13-19.

6. A.K. Nallathambi, Y. Kaymak, E.Specht, A.Bertram, 2010. Sensitivity of material properties on distortion and residual stresses during metal quenching processesJournal of Materials Processing Technology, 210 (2), pp. 204-211.

5. A.K. Nallathambi, C.Laskhmana Rao, Sivakumar M Srinivasan, 2010. Large deflection of constant curvature curved beams under follower load, International Journal of Mechanical Sciences, Vol.52, Issue 3, pp.440-445.
 

4. A.K. Nallathambi, E.Specht, A.Bertram, 2009. Computational Aspects of Temperature based Finite Element Technique for phase-change heat conduction problem, Computational Materials Science, 47 (2), pp. 332-341.

3. A.K. Nallathambi,  E.Specht, 2009. Estimation of heat flux in array of jets quenching using experimental and inverse finite element methodJournal of Materials Processing Technology, 209 (12-13), pp. 5325-5332. 

2. A.K.Nallathambi, S. Doraisamy , A.S. Chandrasekar,  Sivakumar M Srinivasan, 2009.  A 3- species model for Shape Memory Alloys,  International Journal of Structural Changes in Solid Mechanics and Applications, Vol.1, No.1, pp.149-170.

1. A. K. Nallathambi, Y.Kaymak, E.Specht, A.Bertram, 2009.  Optimum Strategies to Reduce Residual Stresses and Distortion during the Metal Quenching ProcessJournal of ASTM International, 6 (4). doi: 10.1520/JAI101806.

 

 

Book Chapter

 

A.K.Nallathambi, Y. Kaymak, E.Specht, A.Bertram, 2008. Distortion and Residual Stresses during Metal Quenching ProcessBook Chapter : Micro-Macro-Interactions in Structured Media and Particle Systems, Editors: Albrecht Bertram and Juergen Tomas, Springer-Verlag, pp 145-157, doi: 10.1007/978-3-540-85715-0_12.