Gastvortrag: Dr. Danil Yurchenko
Dr. Danil Yurchenko
Institute for Mechanical, Process and Energy Engineering
Department of Mechanical Engineering
Thursday, May 24, 2018, 13:00, Room 116, Institute for Risk and Reliability, LUH
Vibroimpact energy harvesting using Electro Active Polymers
Energy harvesting (EH) remains an attractive field of interests due to the needs for powering low-energy-consumption industrial sensor networks, wearable sensors or wireless sensors that required power but placed in hard-to-reach locations, like tires. Despite the enormous efforts undertaken by the scientists all over the world, resulted in a high number of publications and significant advances achieved in understanding various types of mechanical energy conversion, very few devices have been adapted by industry. Among many possible ways of converting mechanical energy of vibrations one may consider a vibro-impact (VI) interaction, which potentially has a number of benefits like high kinetic energy at impacts, ability to work at a low frequency, nonlinear energy transfer and others. Some ideas have been proposed and investigated on how to incorporate the VI dynamics into EH process. The focus of this talk is on the application of the VI dynamics in a combination with dielectric elastomers (DE), a type of electro active polymers, used as a material for membranes subjected to the impacts. The design details, the EH principle, VI dynamics of the device and various sources of uncertainties will be discussed.
Dr. Daniil Yurchenko is the associate professor of Institute of Mechanical, Process and energy engineering and member of wind and marine energy group at Heriot-Watt University University. He has been the associate professor of Heriot-Watt University since 2010, whereas he received his PhD from Worcester Polytechnic Institute in 2001 and defended his habilitation work in 2006. Yurchenko’s research and teaching interests are oriented toward nonlinear and stochastic dynamics, optimal control, reliability, GPU–computing and mathematical modelling with application in energy harvesting, wave and tidal energy, complex mechanical and biological systems. He has published his researches in over 130 Journal and conference papers and 3 book chapters.
Dr. Yurchenko is known for his works in stochastic dynamics and stochastic optimal control. He has developed a method of predicting energy response of a vibroimpact system with dominant impact losses. He was the one who develop a method of solving Hamilton-Jacobi-Bellman partial differential equation for finding an optimal control strategy to control a vibratory system subjected to a random excitation. Then Dr. Yurchenko worked on the development of a novel wave energy converter based on parametric resonance of a vibratory system. In last two years Dr. Yurchenko has been working on design of energy harvesting systems from ambient vibrations. He was the first who proposed to use DE material for energy harvesting from VI interaction, which is the focus of today’s talk.