Practical Cold Spray (PDF)

Recovery System. He is known throughout DOD and the private sector, as someone who 'gets things done', working diligently to transition emerging technologies throughout the defense industry.





Dr. Özdemir is an academic with a background in metal additive manufacturing, compressible flows, multiphase flows, heat and mass transfer, thermodynamics, and failure analysis. He received his Ph.D. in Mechanical Engineering from South Dakota School of Mines and Technology in 2017. His doctoral dissertation focused on the design and efficiency of powder propulsion systems in the emerging cold spray metal additive manufacturing technology. During his prior studies at South Dakota State University, he supported academia and industry in failure analysis through a variety of destructive and nondestructive testing methods. Dr. Özdemir is currently leveraging his experience in multidisciplinary fields for the advancement of the cold spray technology as a research assistant professor at the Department of Mechanical and Industrial Engineering at Northeastern University in Boston. His independent and collaborative work has been high yield and has resulted in the publication of twelve journal articles in a short period of time with over 200 citations, a patent, and ten appearances in international conferences. Furthermore, Dr. Özdemir is a proactive member of the scientific community. He is serving as a member of the Training Subcommittee of ASM International's Thermal Spray Society and he is also among other experts co-editing the proceedings of the 2021 International Thermal Spray Conference.



Aaron Nardi is currently the Chief Technology Officer for VRC Metal Systems, and a well-respected technical lead for cold spray internationally. In his role at VRC, Aaron is responsible for technology leadership within the organization and identification of emerging trends in cold spray. Prior to VRC Aaron was the team lead for the Solid-State Additive Manufacturing Team within the Weapons and Materials Division of the US Army Research Labs. In this role he had technical leadership for all activities underway within the lab including operations at Aberdeen Proving Grounds, at facilities which are part of ARL Northeast, and at partner laboratories within academic and industrial collaborator sites. Prior to ARL Aaron was the team lead for the United Technologies Research Center Cold Spray facility working in close collaboration with the US Army Research Labs. Aaron was responsible for creating this new capability for UTC in 2010 and quickly grew it into a leading research facility for Cold Spray process and materials development worldwide. Aaron's work in Cold Spray not only led to significant advancements in material properties but also resulted in key material and hardware patents some of which were later licensed to suppliers in the industry. Aaron began his career in 1996 as a mechanical metallurgist with Hamilton Standard, a division of UTC, with a focus on fatigue, fracture mechanics, and tribology. He took on increasingly important roles eventually being the lead for the mechanical behavior labs at the corporate research labs, UTRC, prior to his career in cold spray technology.








Aaron Nardi has a MS in Mechanical Metallurgy from Rennslear Polytechnic Institute and a BS in Mechanical Engineering and Materials Sciences from the University of Connecticut, with professional training in Fracture Mechanics and Tribology through UTC, Georgia Tech, and MIT. Aaron has 48 patents held by United Technologies, Hamilton Sundstrand, Sikorsky Aircraft, Delevan Inc., and the Otis Elevator Company in one or more jurisdictions including US, EP, WO, GB, AU, CN, ES, and JP. These patents relate to Cold Spray, advanced manufacturing processes, erosion protection, wear resistant coatings development and applications, and coating structures for fatigue mitigation. Aaron has presented at ASTM, ASM Aeromat, HCAT, CSAT, and North American Cold Spray conferences for work in crack growth, coatings evaluations, and additive manufacturing. He has technical papers in topics including Cold Spray, Thermal Spray, Additive Manufacturing, Crack Growth, and design optimization.