Keynote Speakers

Dr. Manoj Gupta

Dr Manoj Gupta was a former Head of Materials Division of the Mechanical Engineering Department and Director designate of Materials Science and Engineering Initiative at NUS, Singapore. He did his Ph.D. from University of California, Irvine, USA (1992), and postdoctoral research at University of Alberta, Canada (1992). In August 2017 he was highlighted among Top 1% Scientist of the World Position by The Universal Scientific Education and Research Network. To his credit are: (i) Disintegrated Melt Deposition technique and (ii) Hybrid Microwave Sintering technique, an energy efficient solid‐state processing method to synthesize alloys/micro/nano‐composites. He has published over 450 peer reviewed journal papers and owns two US patents. His current h‐index is 55, RG index is 46 and citations are greater than 11000. He has also co‐authored five books, published by John Wiley and Springer in 2015. A multiple award winner, he actively collaborate/visit Japan, France, Saudi Arabia, Qatar, China, USA and India.

Dr. Idapalapati Sridhar

Dr. IDAPALAPATI Sridhar is currently an Associate Professor in the School of Mechanical and Aerospace Engineering at the Nanyang Technological University (NTU), Singapore. He is a Cambridge Nehru Scholar and holds a Ph.D. in mechanics of solids from the University of Cambridge and a First-class Honours (HMT Gold Medal receipent) degree in Mechanical Engineering from the Jawaharlal Nehru Technological University (JNTU), India. He received Master of Technology degree from Indian Institute of Technology, (IIT) Kanpur, India specializing in mechanics of solids & design. Prior to joining NTU, Dr. I. Sridhar worked as a Visiting Scientist at National Institute of Standards and Technology (NIST), USA. Dr Idapalapati’s research interests include design with sandwich structures, composite materials, powder consolidation, biomaterials and hard-tissue implants and recently he started working on wind energy research. Thanks to his mentors, collaborators, students, he had published about 70 International Journal Papers and 7 book chapters. He enjoys working with students in various co-curricular activities. He was advisor to the Schools Leadership Development Programme, LDP (2010-2014) and TEDxNTU, WoW.

Dr. M. Vasudevan

Dr. M. Vasudevan is Scientific Officer ‘H’ and currently holding position as Section head, Advanced Welding Processes and Modeling Section, Materials Development and Technology Division, Indira Gandhi Centre for Atomic Research, Kalpakkam. He is also a Professor at Homi Bhaba National Institute, Department of Atomic Energy. He is an expert in the area of welding of nuclear structural materials and modeling and simulation of weld phenomena. He has published over 125 research papers in peer reviewed journals/books, 115 papers in conference proceedings, holds an international patent and delivered more than 45 invited lectures at reputed universities and conferences. His h-index is 23 and his research papers have already received over 1350 citations. He is a member, Doctoral committee for PhD Students from various institutes. He is an examiner for M.S. and PhD thesis from various universities. He is a Key Reader in Metallurgical and Materials Transactions A. Dr. Vasudevan has been awarded and recognized for his worthy and significant research contributions to welding science and technology and metallurgy of nuclear structural materials.

He has received several awards which include Sharp Tools Award (1987), SAIL Gold Medal (1993), I.T. Mirchandani Award (2002), D&H Secheron Award (2002), H.D. Govindaraj Memorial Award (2003), Young Metallurgist Award (2005), Group Achievement Award 2006 for Excellence in Science, Engineering & Technology from the Department of Atomic Energy, Govt. of India, Overall Best Paper Award from IIM Kalpakkam Chapter (2007), Indian Nuclear Society Gold Medal from INS (2008), KCP Best Paper Award (2009), Prof. Placid Rodriguez Memorial Award from IIW (2009), Overall Best Paper Award from IIM Kalpakkam chapter (2013), National Metallurgist Day “Metallurgist of the Year Award” from the Ministry of Steel Government of India (2016).


  1. The Promise of Magnesium (Composite) Technology for Sustainable Planet Earth
    Department of Mechanical Engineering, National University of Singapore, Singapore 117 576
    Never before in the history of mankind that we have faced a situation where further deterioration in climate, land and water bodies will lead to catastrophic and irreversible changes within next 10 years. The solution is to develop materials and technologies that are not toxic to living organisms and environment so that planet earth remains a good place to raise our future generations. Research community, worldwide, is aware of these problems and evidences are emerging of responsible and ethical research to mitigate these problems. Among various solutions, materials development and their responsible usage is key to resolve the contamination of land, air and hydrosphere. For structural and non-structural applications, magnesium based materials can provide a responsible alternative. Magnesium is one of the most abundant element in planet earth that has nutritional characteristics as it is required for maintaining good bone, muscular and neurological health. It is also the lightest metallic element (35% lighter than aluminum) that can be used in multiple engineering and biomedical applications. Recycling of magnesium based materials is not an issue due to its non-toxicity. Due to its low density, it also ensures lower fuel consumption and reduced carbon dioxide emissions. This is of special significance in weight critical applications such as automobile, aerospace, sports and space sectors. However, unlike aluminum based materials, commercial magnesium based alloys/materials are limited in number and also exhibit limited range of properties. It is thus extremely important to responsibly develop magnesium alloys by minimizing the toxic alloying elements and to further enhance the properties of magnesium and its alloys using composite (nano/metastable and syntactic) technology. Accordingly, the main intention of this presentation is to enhance the awareness of potential of magnesium based materials as an ideal choice for sustainable planet earth.
    Keywords : Magnesium; Nanocomposites; Syntactic composites; Metastable composites

  2. Design and Analysis of Structures Made of Long Fiber Reinforced Polymer Composites
    Idapalapati Sridhar
    School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
    Wood based natural composite materials are exploited by humans since ancient times for several load – bearing structures. Material intensive modern day aeroplanes, ships and wind-tubine blades are designed and fabricated with long glass or carbon fiber reinforced polymer composites leading to high specific strength and stiff designs. In this presentation, after a brief introduction to composite materials, design and analysis of sandwich structures comprising composite laminates as facesheets and polymeric foams as cores under static and impact loading conditions will be discussed. The competing failure modes of facesheet failure, core shear and localised core indentation failures through upper-bound analytical solutions, finite element based numerical solutions and their comparison with experimental measurements will be presented. A case study on the design and analysis of composite adhesive bonded joints under static and fatigue loading will be discussed for primary structures and as a tool for composites repair will be discussed.

  3. A-TIG Welding and Its effect on Performance of the Stainless Steel Weld Joints
    M. Vasudevan
    Head, Advanced Welding Processes and Modeling Section, Materials Development and Technology Division
    Professor, Homi Bhabha National Institute
    Indira Gandhi Centre for Atomic Research, Kalpakkam
    Activated Tungsten Inert Gas (A-TIG) welding process has been developed for stainless steels which overcome the major limitations of TIG welding. Significant improvement in penetration performance over 300% has been achieved by A-TIG welding and variable weld penetration during autogenous TIG welding has been overcome. The mechanism causing the improvement in penetration in stainless steels has been identified as the reversal of marangoni flow in the weld pool caused by dissolved oxygen (surface active element) from the activated flux. The weld bead width is reduced and the weld bead profile is improved due to arc constriction caused by the activated flux. A-TIG welding process has been successfully employed for fabricating type 304 LN stainless steel, 316 LN stainless steel, Duplex stainless steel and 409 ferritic stainless steel weld joints. Significant improvement in mechanical properties, corrosion resistance, large reductions in residual stresses and distortion and cost of fabrication have been demonstrated for the above stainless steel weld joints. A-TIG welding is already found applications in the nuclear industry for improving the performance of weld joints and reduce the cost of fabrication. A-TIG welding has greater potential for welding of structural components made of stainless steels.