David Talbot is an assistant professor in the Department of Mechanical and Aerospace Engineering at The Ohio State University. His research focuses on multidisciplinary power transmission problems within the aerospace, transportation, wind energy, and industrial gearbox industries. His specific research investigations include load distribution modeling of power transmission components, gear, bearing and power transmission system efficiency modeling and measurement, gear dynamics and vibrations, gear manufacturing process simulation, and failure modes of power transmission components. Dr. Talbot is an associate editor for Mechanism and Machine Theory, the chair of the ASME Power Transmission and Gearing Committee, and the chair of the upcoming ASME Power Transmission and Gearing Conference 2023 as part of ASME IDETC.
Mechanical power loss in gears is generated through sliding and rolling of the contact resulting in frictional work and elastic hysteresis generation of heat. This action is both a parasitic loss of energy from the drivetrain and a source of engineering costs to control system temperature to avoid heat-related failures of the gearbox components. Therefore, from both a cost and durability standpoint it is of great interest to minimize the frictional losses at the gear tooth contact interface.