Cold Spray in the Realm of Additive Manufacturing

Dr. Sunil Pathak is specialized in gear engineering and advanced/hybrid manufacturing processes. He has been working in the field of gear engineering since last 9 years and advanced manufacturing for over 6 years. He has conducted extensive research on advanced finishing of gears. He possesses specialized skills in gear finishing, gear metrology (micro, and macro-geometry) and measurement of gear accuracy. Presently he has been working on machining of difficult-to- machine materials using advanced machining processes such as EDM and WEDM. He is also working in developing cold spray coatings as sustainable process for manufacturing of 3D additive manufacturing components and repair/remanufacturing engineering, where he has specially gained experience in materials and remanufacturing engineering. He has developed analytical models of manufacturing processes and optimizing parameters to achieve overall sustainability in manufacturing. Dr. Gobinda Saha led the R&D at two successive Nanocomposites manufacturing companies in conjunction with his previous academic appointment at the University of Calgary. His work served as the bridge divulging theoretical knowledge in nanocomposite materials into the design, synthesis, testing, and commercialization of two nanostructured coatings systems developed on the cold spray and HVOF thermal spraying methodology. Simultaneously, his research in design, fabrication, processing, and characterization/testing of smart optical sensor reinforced FRP composites and modelling has contributed to the dissemination of knowledge through peer-review publication in over 50 papers, has 2 patents, as well as supervised numerous graduate thesis research (MSc and PhD level). Dr. Saha has given numerous keynote talks on the topic of Nanostructured Composites and Biocomposites. He has served as the Chair of ASME Composites & Heterogeneous Materials Technical Committee, as well the founding member of the Joint Canada-USA Regulatory Cooperation Council on developing strategies for nanomaterials including risk assessment and management and uses of industrial nanomaterials.

Cold Spray: Its Prominence as an Additive Manufacturing Technology.- Commercial cold spray equipment.-  The influence of feedstock powder.- Cold spray deposition on polymeric and composite substrates.- Advanced modeling and simulation tools to address build-up issues in CSAM.- Laser assisted cold spray deposition.- Development of CuAlNi shape memory alloy structures using cold spray deposition technique with laser remelting.- Dimension analysis and laser-ultrasonic inspection of CSAM components.