The Henry Granjon prizes were presented by Dr. Fabrice Scandella on behalf of IS-Institut de Soudure (French Welding Institute).
The prize was awarded to Mr Satya Gajapathi (Canada) for his paper, “A Novel Approach to Microwelding using Electron Beam.”
Mr Satya Gajapathi completed his Bachelor’s degree in Mechanical Engineering at the National Institute of Technology, Trichy, India, in 2009. He subsequently attended the University of Alberta, Edmonton, Canada, in order to complete his Master’s degree in Mechanical Engineering, which he was awarded in 2011. His Master’s research, under the guidance of Prof. Patricio F. Mendez and Prof. Sushanta K. Mitra, was focused on modelling and numerical simulation of electron beam welding, aimed at developing a novel approach to microwelding. His work received considerable attention and was published in peer-reviewed journals and conference proceedings, and referred to in oral presentations.
Upon completion of his Master’s degree, he was employed briefly at Apollo - Clad Laser Cladding (Leduc, Canada) where he developed a computer model to simulate laser heat treatment which is applied to determine process parameters for target case depths and hardness requirements in steel. He was also involved in developing efficient approaches for laser cladding, based on analytical models and the design of experiments. Since 2012, Mr Gajapathi has been in the employ of Ulterra (Leduc, Canada), where he is involved in research projects dealing with hard materials for drilling applications, wear testing, advanced welding and automation, and additive manufacturing.
The prize was awarded jointly to Dr Xinghua Yu (United States) for his paper, “Correlation of Ferrite Formation to Creep Properties of Cr-Mo Steel Welds” and to Mr MSc Rahul Sharma (Germany) for his paper, “Investigation on the Hot Cracking Sensitivity of Nickel-based Alloys during cold Wire Submerged Arc Welding with Externally-loaded Hot Cracking Tests.”
Dr. Xinghua Yu received a BS in Welding Engineering in 2007 from Harbin Institute of Technology (P.R. of China) and a PhD in Welding Engineering from The Ohio State University (United States) in 2012. He is currently employed as a Post-Doctoral Research Associate at Oak Ridge National Laboratory (ORNL). During his PhD studies, his research focused on weld and heat-affected zone microstructures and the properties of naval steels and power plant steels. He also investigated hot cracking behaviours and the magnetic stirring effect of Ni alloy. Seven papers were published in peer-reviewed journals based on his PhD work. In addition, he has also delivered more than 20 presentations at technical conferences sponsored by the American Welding Society (AWS), the American Society of Mechanical Engineers (ASME), The Minerals Metals and Materials Society (TMS), EPRI and the Japan Welding Society (JWS).
In 2010, Dr. Yu received an International Research Fellowship from the National Science Foundation to SPring-8 in Japan, the world’s largest third-generation synchrotron radiation facility. More recently, he has been working on hydrogen-induced cracking, weld fatigue and the development of welding consumables.
Mr MSc Rahul Sharma was awarded an undergraduate degree in Materials Science in 2010, after completing his studies in Mechanical Engineering and Materials Science at RWTH Aachen University (Aachen, Germany). His thesis was focused on the mechanical properties of GMA-brazed joints in high-strength steels. He later obtained a Master’s Degree in Materials Science in 2013, specialising in construction materials and surface engineering.
From 2005-2010, Mr M.Sc. Rahul Sharma was employed at the Welding and Joining Institute, RWTH Aachen University, as a student worker in the Arc Welding Department. Since 2010, he has been employed as a Research Engineer in the field of submerged arc welding and electroslag welding and has also been involved with in-situ studies with neutron radiation with a view to analysing the thermal strain field during welding.
Mr Sharma has since embarked upon studies towards a doctoral degree, with a planned thesis in the field of materials behaviour during arc welding, while working concomitantly as a Research Assistant at the Welding and Joining Institute of RWTH Aachen University.
The prize was awarded to Dr Kawin Saiprasertkit (Japan) for his paper, “Fatigue Strength Assessment of Load Carrying Cruciform Joints in Low and High Cycle Fatigue Region based on Effective Notch Concept.”
Dr. Kawin Saiprasertkit obtained his Bachelor’s Degree in Civil Engineering from Chulalongkorn University, Thailand, following which he pursued his Master’s and PhD studies at the Tokyo Institute of Technology, Japan. His field of study has focused on the fatigue of steel structures, with particular emphasis on steel bridge bents, widely-used in urban areas as supporting structures for either highways or overpass bridges.
Recent surveys have revealed that weld defects have existed during the fabrication of most connections which could somehow lead to fatigue cracks from a high level of stress or strain concentrations. Dr. Saiprasertkit has thus concentrated primarily on the evaluation of the fatigue strength of beam-to-column connections under a number of material-mismatched conditions, combined with the numerous sizes of defects. The criticity of strength undermatching under high-intensity cyclic loads (eg. earthquakes) was the focus of Dr. Saiprasertkit’s research and he eventually proposed a master curve to evaluate them all as the result of his experimental and analytical work on several types of joints.
Dr. Saiprasertkit is currently employed as Assistant Professor at the Tokyo Institute of Technology, where he conducts research and delivers lectures at the undergraduate degree level.
The prize was awarded to Mr Weijie Zhang (United States) for his paper, “Modeling of Human Welder Behavior.”
Mr Weijie Zhang received his BS and MS degrees in Electrical Engineering/Control from the Harbin Institute of Technology, P.R. of China, in 2005 and 2007, respectively. He later joined the University of Kentucky at Lexington (USA) in 2008 as a Research Assistant and PhD student in its Welding Research Laboratory. His major research interests include sensors, arc welding processes, system identification and control.
Mr Zhang has published approximately 20 papers in peer-reviewed journals and conferences, including the (AWS) American Welding Society’s Welding Journal and the journal of the American Society of Mechanical Engineers (ASME). His research on the study of the human welder’s behaviour during welding performance has been documented in four accepted/published papers in Research Supplements of the Welding Journal, one IEEE Transactions on Automation Science and Engineering paper as the lead author and one ASME Transaction of Manufacturing Science and Engineering paper as the second author.
Mr Zhang’s paper, presented in 2012 at the IEEE Symposium on Industrial Electronics, received the honour of being identified as one of the top ten scored papers from amongst over 300 papers. His story as a promising researcher in welding has been featured by the Welding Journal.