Faculty Member

Ph.D. Research Students

Alam S A
arshad@iitb.ac.in

Mehta M
mmehta1973@gmail.com

Manvatkar V (Mrs)
vinayamanvatkar@gmail.com

Das Atanu
114100015@iitb.ac.in

Krishnan S
114107008@iitb.ac.in

M Tech Student

RA (M Tech) Students

Ronadmath G S U
113109003@iitb.ac.in

Paul D S
113109006@iitb.ac.in

Keynote Lecture / Invited Talk De, A., Trends in Joining of Aerospace Materials, 4th "Indo-US Frontiers of Engineering Symposium", Lockheed Martin Center of Excellence, Bethesda, USA, 29.02.2012 - 01.03.2012. (Presentation) De, A., Recent advances in resistance spot welding of coated steels and aluminum alloys, 64th "IIW annual assembly and International conference", Chennai, India, 17.07.2011 - 21.06.2011. De, A., Recent trends in tandem submerged arc welding, 22nd Foundation Day of "Indian Institute of Welding" at Rusy Mody Center of Excellence, Jamshedpur, India, 22.04.2011. De, A., Forward and reverse calculations in welding process simulation, AICTE sponsored STTP on "Manufacturing in the 21st Century" at VNIT Nagpur, India, 20.07.2009. De, A., On-line temperature monitoring and thermal modeling of friction stir welding of dissimilar aluminum grades, Ministry of Environment and Forest (Govt. of India) sponsored National Workshop on Environmentally Cleaner Welding Process at Annamalai University, Chidambaram, INDIA, 17.04.2009 - 18.04.2009. De, A, Prabu, B., Nandan, R. and DebRoy, T., Towards quantitative understanding of friction stir welding - a vital new technology for the Aluminium industry, International Conference on Aluminium (INCAL-2007), Aluminum Society of India (AAI) in association with IAI, US Aluminum Association and Aluminum development council of Australia, HICC (Hyderabad), INDIA, 371 - 389, 21.11.2007 - 23.11.2007. De, A. and Dorn, L., Computer simulation of resistance spot welding process, 7th International Seminar on Numerical Analysis of Weldability , Graz-Seggau, Austria, 2003. Book Chapter Bag, S. and De, A., Chapter-6 : Computational modeling of conduction mode laser welding process,, in the book Laser Welding edited by Dr. Xiaodong Na, 1st Edition (ISBN 978-953-307-129-9), Sciyo Publication, September'2010, pp.130-160, available online. De, A., Modelling of Thermal, Electrical and Mechanical coupling in fusion welding, in ASM Handbook (Volume 6A): Fundamentals of Welding. Patent(s) An electrically conductive coating for spot welding applications - applied (jointly between Indian Institute of Technology Bombay and Aditya Birla Science and Technology Corporation Pvt Ltd). International Journal Manvatkar, V.D., Arora, A., De, A. and DebRoy, T., Neural network models of peak temperature, torque, traverse force, bending stress and maximum shear stress during friction stir welding durability maps for friction stir welding, Science and Technology of Welding and Joining, Accepted. DebRoy, T., De. A., Bhadeshia, H.K.D.H., Manvatkar, V.D. and Arora, A., Tool durability maps for friction stir welding of an Aluminum Alloy, submitted. Kiran, D. V., Basu, B. and De. A., Influence of process variables on weld bead quality in two wire tandem submerged arc welding of HSLA steel, Journal of Materials Processing Technology, Accepted. Arora, A., Mehta, M., De, A. and DebRoy, T., Load bearing capacity of tool pin during friction stir welding , published online, International Journal of Advanced Manufacturing Technology [DOI: 10.1007/s00170-011-3759-7]. Bag, S., Kiran, D. V., Syed, A. Arshad and De, A., Efficient estimation of volumetric heat source in fusion welding process simulation (IIW Doc. No.: IX-2366-11), Welding in the World, Accepted for publication, 56, (11/12), 2012. Manvatkar, D. V., Gokhale, A. A., Reddy, J. G., Venkataramana, A. and De, A., Estimation of melt pool dimensions, thermal cycle and hardness distribution in laser engineered net shaping process of austenitic stainless steel, Metallurgical and Materials Trsaction A, 42A, (13), 4080 - 4087, 2011. Patil, R. R., Anurag Tilak CJK, Srivastava, V. and De, A., Minimizing electrode wear in resistance spot welding of aluminum alloys, Science and Technology of Welding and Joining, 16, (6), 509 - 513, 2011. Rai, R., De, A., Bhadeshia H. K. D. H. and DebRoy, T., Review: Friction stir welding tools, Science and Technology of Welding and Joining, 16, (4), 325 - 342, 2011. (Speical issue celebrating 1000 articles published). Kiran, D. V., Mishra, S., Basu, B., Shah, A. K. and De, A., Three dimensional heat transfer analysis of two-wire tandem submerged arc welding, ISIJ International, 51, (5), 793 - 798, 2011. Mehta, M., Arora, A., De, A. and DebRoy, T., Tool geometry for friction stir welding - optimum shoulder diameter, Metallurgical and Materials Transactions A, 42A, (9), 2716 - 2722, 2011. De, A. and DebRoy, T., EDITORIAL: A Perspective on Residual Stresses in Welding, Science and Technology of Welding and Joining, 16, (3), 204 - 208, 2011. (This special issue contains thirteen selected peer-reviewed articles - five on modeling, six on measurement and two on mitigation techniques for residual stress in welding). Arora, A., De, A. and DebRoy, T., Towards optimum friction stir welding tool shoulder diameter, Scripta Materelia, 64, (1), 9 - 12, 2011. Bag, S. and De, A., Probing reliability of transport phenomena based heat transfer and fluid flow analysis in autogeneous fusion welding process, Metallurgical and Materials Transactions A, 41A, (9), 2337 - 2347, 2010. Kiran, D. V., Basu, B., Shah, A. K., Mishra, S. and De, A., Probing influence of welding current on weld quality in two wire tandem submerged arc welding of HSLA steel, Science and Technology of Welding and Joining, 15, (2), 111 - 116, 2010. Arora, A., Zhang, Z., De, A. and DebRoy, T., Strains and strain rates during friction stir welding, Scripta Materialia, 61, (9), 863 - 866, 2009. Bag, S. and De, A., Error analysis of forward and reverse heat conduction and convection calculations considering uncertainties in welding, Science and Technology of Welding and Joining, 14, (7), 662 - 668, 2009. Neela, V. and De, A., Three dimensional heat transfer analysis of LENSTM process using finite element method, International Journal of Advanced Manufacturing Technology, 45, (9), 935-939, 2009. (DOI: 10.1007/s00170-009-2024-9). Bag, S. and De, A., Development of an efficient numerical heat transfer model coupled with genetic algorithm based optimization for the prediction of process variables in fusion welding, Science and Technology of Welding and Joining, 14, (4), 633 - 645, 2009. Bag, S., Trivedi A and De, A., Development of a conduction mode heat transfer model for laser welding process using an adaptive volumetric heat source, International Journal of Thermal Sciences, 48, (10), 1923 - 1931, 2009. Bag, S., De, A., and DebRoy, T., A genetic algorithm assisted inverse convective heat transfer model for tailoring weld geometry, Materials and Manufacturing Processes, 24, (3), 384 - 397, 2009. (Speical issue on Genetic Algorithm / Artificial Neural Network). Bag, S. and De, A., Development of a three-dimensional heat transfer model for GTAW process using finite element method coupled with a Genetic Algorithm based identification of uncertain input parameters, Metallurgical and Materials Transactions A, 39A, (11), 2698 - 2712, 2008. De, A., EDITORIAL: A Special Issue on SPOT WELDING, Science and Technology of Welding and Joining, 13, (3), 2008. (This special issue contains ten selected peer-reviewed articles - six on resistance spot, two on laser spot, one on friction stir spot and one on GTA spot welding processes). Rituraj, R., Prabu, B., De, A., and DebRoy, T., Improving reliability in heat transfer and materials flow calculations during friction stir welding of dissimilar aluminium alloys, AWS Welding Journal, 86, (10), 313s - 322s, 2007. Bag, S., Trivedi, A., and De, A., Use of multivariate optimization algorithm to develop self-consistent numerical heat transfer model for laser spot welding, International Journal of Advanced Manufacturing Technology, 38, 575 - 585, 2008. Trivedi, A., Bag, S., and De, A., Three dimensional transient heat conduction and thermomechanical analysis for laser spot welding using adaptive heat source, Science and Technology of Welding and Joining, UK, 12, (1), 24 - 31, 2007. De, A. and DebRoy, T., Improving reliability of heat and fluid flow calculation during conduction mode laser spot welding by multivariable optimization, Science and Technology of Welding and Joining, UK, 11, (2), 143 - 153, 2006. De, A., Momeni, K., Thaddeus, M. P., and Dorn, L., Influence of machine specific instantaneous current wave form on resistance spot welding process, ASME Journal of Manufacturing Science and Engineering, 128, (3), 668 - 676, 2006. Trivedi, A., Suman, A., and De, A., Integrating finite element based heat transfer analysis with multivariate optimization for efficient weld pool modeling, ISIJ International, 46, (2), 267 - 275, 2006. De, A. and DebRoy, T., Reliable calculations of heat and fluid flow during conduction model laser welding through optimization of uncertain parameters, AWS Welding Journal, 84, (7), 101s - 112s, 2005. (Co-recipient of Charles H Jennings Award presented for the most valuable University Research Paper published in AWS Welding Journal in 2005). De, A., Dorn, L. and Momeni, K., Probing the role of instantaneous current waveform in numerical modelling of resistance spot welding process, Science and Technology of Welding and Joining, UK, 10, (3), 325 - 334, 2005. De, A. and DebRoy, T., A smart model to estimate effective thermal conductivity and viscosity in weld pool, Journal of Applied Physics, 95, (9), 5230 - 5240, 2004. De, A. and DebRoy, T., Probing unknown welding parameters from convective heat transfer calculation and multivariate optimization, Journal of Physics D : Applied Physics, 37, 140 - 150, 2004. De, A., Jantre, J. and Ghosh, P. K., Prediction of weld quality in pulsed current GMAW process using artificial neural network, Science and Technology of Welding and Joining, 9, (3), 253 - 259, 2004. De, A., Walsh, C., Maiti, S. K. and Bhadeshia, H. D. K. H., Prediction of cooling rate and microstructure in laser spot welds, Science and Technology of Welding and Joining, 8 (6), 391 - 399, 2003. De A., Maiti, S. K., Walsh, C. and Bhadeshia, H. D. K. H., Finite element modelling of laser spot welding, Science and Technology of Welding and Joining, 8 (5), 377 - 384, 2003. De, A. and Parle, D., Real time seam tracking system for automated fusion arc welding, Science and Technology of Welding and Joining, 8 (5), 340 - 346, 2003. De, A., Theddeus, M. P. and Dorn, L., Numerical modelling of resistance spot welding of aluminium alloys, ISIJ International, Japan, 43 (2), 238-244, 2003. De, A. and Theddeus, M. P., Finite element analysis of resistance spot welding in aluminium, Science and Technology of Welding and Joining, 7 (2), 111-118, 2002. De, A., FEM modeling of resistance spot welding process in aluminium with spherical tip electrodes, Science and Technology of Welding and Joining, 7 (2), 119-124, 2002. De, A., Dorn, L. and Gupta, O. P., Analysis and optimisation of electrode life for conventional and compound tip electrodes during resistance spot welding of electrogalvanised steels, Science and Technology of Welding and Joining, 5 (1), 49-57, 2000. Gupta, O. P. and De, A., An improved numerical modelling for resistance spot welding process and its experimenl verification, ASME Journal of Manufacturing Sc. & Engineering, 120, 246-251, 1998. De, A., Gupta, O. P. and Dorn, L., An experimental study of resistance spot welding in 1mm thick sheet of low-carbon steel, Proc. Instn Mech Engrs, Part B: Journal of Engineering Manufacture, UK, 210, 341-347, 1996. International Conference Manvatkar, V., Gokhale, A., Reddy, G. J. and De, A., An integrated approach towards estimation of build profile and mechanical properties in LENS® deposit of H13 Tool steel (2011), in symposium "Additive Manufacturing of Metals" in Annual TMS Meeting on Material Science and Technology, 2011, [Eds: Ian D. Harris, Ulf Ackelid, Ola Harrysson, Sudarsanam Babu and Brent Stucker] Ohio, USA. Bag, S., Kiran, D. V. and De, A., Efficient estimation of volumetric heat source in fusion welding process simulation (2011), 64th IIW Annual assembly (Commission IX), Chennai, India, 17.07.2011 - 21.07.2011. Nagaraju, J. S., Alam, S. A., Jauhri, M. K., Praveen, J., Nandkishor, J. K. and De, A., Estimation of weld metal toughness in gas metal arc welding (2011), 64th IIW Annual assembly and International conference, Chennai, India, 17.07.2011 - 21.07.2011. DebRoy, T., Arora, A., Roy, G. G., and De, A., Advances and promises of weld pool convective heat transfer calculations (2009) , 10th International Seminar on Numerical Analysis of Weldability, Graz-Seggau, Austria, 2009. Nandan, R., Prabu, B., De, A., and DebRoy, T., Tailoring friction stir welding of aluminum alloys using a differential evolution and a transport phenomena based model (2008) xx - xxx, 8th International Conference on Trends in Welding Research, ASM International, 01.06.2008 - 06.06.2008, Pine Mountain, Georgia, USA. Prabu, B. and De, A., Probing void formation in friction stir welding of 10 mm thick similar and dissimilar aluminum alloys, 1214 - 1220, International Conference on Welding (IIW IC - 2008) , 08.01.08 - 09.01.08, Chennai, INDIA. (Selected for the PANTHAKI award for the best paper on welding of non-ferrous metals). Bag, S. and De, A., Three dimensional heat transfer modeling of laser beam welding using adaptive volumetric heat source and GA based optimization of absorption coefficient (2008) 139 - 145, International Conference on Welding (IIW IC - 2008) , 08.01.08 - 09.01.08, Chennai, INDIA. (Selected as the for the H. D. Govindraj Memorial Award for best research paper). Prabu, B., Nandan, R., De, A. and DebRoy, T., Towards quantitative understanding of friction stir welding - a vital new technology for the Aluminium industry (2007) 371 - 389, International Conference on Aluminium (INCAL-2007), 21.11.07 - 23.11.07, Organized by Aluminum Society of India (AAI) in association with IAI, US Al Association and Al development council of Australia, HICC (Hyderabad), INDIA. (invited lecture). Neela, V. and De, A., Three dimensional heat transfer modeling of laser engineered net shaping process (2007) 426 - 434, International Conference on Advanced Manufacturing Technology (ICAMT - 2007) , 19.09.07 - 22.09.07, CMERI Durgapur. Bag, S., Trivedi, A., and De, A.,  Reliable estimation of laser weld pool using numerial modeling and multivariate optimization (2006) 607 - 612, 1st International and 22nd AIMTDR, 21.12.06 - 23.12.06, IIT Roorkee. Prabu, B., Sawant, B., and De, A.,  On-line temperature monitoring during friction stir welding of aluminum 6061 alloys (2006) 533 - 538, 1st International and 22nd AIMTDR, 21.12.06 - 23.12.06, IIT Roorkee. Trivedi, A., Bag, S., and De, A., Three dimensional transient heat conduction and thermomechanical analysis for laser spot welding using adaptive heat source (2006) 80 - 97, Computer Aided Welding Engineering (CAWE) - 2006, 19.10.06 - 21.10.06, Shandong University, Jinan, P. R. China, 2006. Prabu, B., Nandan, R., De, A., and DebRoy,  Probing temperature distribution and material flow during friction stir welding of dissimilar aluminum alloys, AWS Professional Program, 31.10.06 - 02.11.06, Atlanta, USA, 2006. Dorn, L., and De, A., Modellierung und Simulation von Produktenwicklungsprozessen , Futur, 1/2005 7. Jahrgang ISSN 1438 - 1125, Institut fur Produktionsanlagen und Konstruktionstechnik (IPK) und Institut fur Werkzeugmachinen und Fabrikbetrieb (IWF), TU Berlin, Germany. Trivedi, A. and De, A., Finite element modeling of laser spot welding for thin metallic sheets, Frontiers in Materials Joining - 2005, Tel-Aviv, Israel, 2005. Alam, S. A., Raman, R., Dorn, L., and De. A., Prediction of Weld Quality in Resistance Spot Welding using Neural Network, Frontiers of Welding Technology, IIW-IC2005, Mumbai, India, 2005. Trivedi, A. and De. A., An Efficient Modeling of Laser Spot Welding Process using Finite Element Method, Frontiers of Welding Technology, IIW-IC2005, Mumbai, India, 2005. De, A. and DebRoy, T., Identifying uncertain material parameters in weld pool using integrated modeling, AWS Professional Program, Chicago, USA, 2004. De, A and Dorn, L, Computer simulation of resistance spot welding process, 7th International Seminar on Numerical Analysis of Weldability, Graz-Seggau, Austria, 2003.(keynote lecture). De, A., Dorn, L. and Gohil, A., Finite element analysis of resistance spot welding of aluminium alloys, International Conference on Joining of Materials (JOM-10), Helsingor, Denmark, 305-315, 2001. De, A. and Varaprasad, N. R., Finite element modeling of heat flow during fusion arc welding, International Welding Conference, IWC-2001, 620-636, New Delhi, India. De, A. and Gohil, A., Numerical modeling of resistance spot welding of aluminium alloys, International Welding Conference, IWC-2001, New Delhi, India. De, A., Dorn, L., Gupta, O. P., and Chang, In-sung, Advanced electrode design for resistance spot welding of galvanised steel, EUROJOIN-3, Bern, Switzerland, 471-480, 1998. Dorn, L., De, A. and Chang, In-sung, Vergrosserte Elektrodenstandmenge beim Punktschweiáen verzinkter Stahlbleche mittels Verbundelektroden (A detailed study of the improvement to the Electrode Life during resistance spot welding of Galvanised steel using compound electrode), DVS Programm Commision on Widerstandsschweissen-98, Duisburg, Germany, 44-48, May 1998. De, A., Dorn, L. and Gupta, O. P., Numerical Modelling of resistance spot welding process, 3rd International Seminar on Numerical Analysis of Weldability, Graz-Seggau, Austria, 520-530, 1997. National Journal Bag, S. and De, A.,  Three dimensional heat transfer modeling of laser beam welding using adaptive volumetric heat source and GA based optimization of absorption coefficient , Indian Welding Journal, 42 (2), 43 - 48, 2009. National Conference Kiran, D. V., Basu, B., Shah, A. K., Mishra, S. and De, A., Numerical modeling of two wire tandem submerged arc welding process and its experimental validation (2010) , National Welding Conference (NWS 2010), Vishakhapatnam, India. Arshad, A. S. and De, A., Probing weld joint attributes in pulsed current gas metal arc welding process using neural network based model (2010) , National Welding Conference (NWS 2010), Vishakhapatnam, India. Kiran, D. V., Basu, B., Shah, A. K., Mishra, S. and De, A., Three-dimensional heat transfer modeling of tandem submerged arc welding process (2009) , National Welding Conference (NWS 2009), Mumbai, India. Prabu, B., Gaikwad, S. and De, A., Three-dimensional thermo-mechanical modeling of friction stir welding process (2009) , National Welding Conference (NWS 2009), Mumbai, India. Bag, S. and De, A., Development of a transport phenomena based numerical model for GTAW process using FEM (2009) , National Welding Conference (NWS 2009), Mumbai, India. Neela, V. and De, A.; Numerical modeling of LENSTM Process using special element features (2007) xxx - xxx, ABAQUS INDIA User's Meet (IUC 2007), October'2007, Bangalore, India. ( invited presentation). De, A., Bag, S. and Trivedi, A., Enhancing reliability of numerical computational model for laser spot welding process, WPQ-2007, Welding Productivity and Quality, NMRL Ambernath, India, February 20 - 21, 2007. (Awarded as the best paper presented). Thaddeus, M. P., Momeni, K., Dorn, L. De, A., An influence of the influence on machine specific electrical characteristics on weld quality in resistance spot welding, IPROMM-2005, Industrial Probelms on Machines and Mechanisms, IIT Kharagpur, India, February 24 - 25, 2005. De, A., Dorn, L. and Gupta, O. P., Compound electrode - an effective solution to early diminution of electrode life in resistance spot welding of coated steels, AIMTDR, IIT Kharagpur, India, 98-103, 1998. Gupta, O. P., Dorn. L. and De, A., An evaluation of resistance spot welding process of low-carbon steel and HSLA steel sheets, NWS, Jamshedpur, India, 1996. Gupta, O. P. and De. A, Numerical modelling as an aid to resistance spot welding parameters optimization and control, The workshop on trends in resistance welding in Indian Industry, WRI Trichi, India, 81-86, 1995. Gupta, O. P. and De, A., In-depth numerical modelling of resistance spot welding using finite element method, SOJOM91, WRI Trichi, India, 687-692, 1991.