COE/Structural Mechanics Seminar
Title: |
Energy Harvesting with Nonlinear Phenomena |
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Speaker: |
Dr. Brian P. Mann |
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Affiliation: |
Mechanical Engineering and Materials Science, Duke University |
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When: |
Thursday, October 28, 2010 at 11:00:00 AM |
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Where: |
MARC Building, Room 114 |
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Host: |
Michael Leamy | |
Abstract Recent advancements in the microelectronics industry have enabled a reduction in the power consumed by MEMS devices. This has motivated many works that investigate meeting the need for remote power by scavenging energy from the environment. While solar, chemical and thermal methods are sometimes viable, many have recognized the abundance of vibration as a potential source of energy; thus, extracting energy from an inertial generator interacting with its environment has become a promising area of inquiry. For instance, several recent investigations consider scavenging the energy from the motions in the ambient environment to power wireless sensor networks for bridges, buildings, or aircraft and the powering of body-worn or implanted electronics with human motion. This talk will discuss vibration-based energy harvesting. More specifically, the primary focus of past works was the use of frequency matching to achieve linear resonance; although this approach simplifies the analyses, it suffers from the fact that a substantial amount of energy can only be scavenged from a narrow-band of frequencies near resonance. My research focuses on an alternative paradigm to this problem whereby nonlinear behavior is intentionally used to achieve performance increases. In particular, I will describe my work that seeks to demonstrate that ability of nonlinearities provide tuning and a more broadband frequency response for vibratory energy harvesters. Finally, my talk will conclude with some perspectives on future opportunities in this area. |
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Biography Dr. Brian Mann received his BS degree in 1996 from the University of Missouri prior to accepting a position with McDonnell Douglas Corporation. After working in the aerospace industry for two years, he was lured away by DaimlerChrysler to work in the automotive industry while he earned a M.S. degree at Washington University in St. Louis. Upon deciding to return for his D.Sc. degree, he was awarded the National Defense Science and Engineering Graduate Fellowship. He completed his D.Sc. degree at Washington University in 2003 and has held faculty positions at the University of Florida and the University of Missouri. During this time period, he was awarded an NSF CAREER Award from the National Science Foundation, a 2006 Defense Manufacturing Achievement Award, and a SAE Ralph Teetor Educator Award. He is currently a faculty member at Duke University where he was recently awarded a 2008 Office of Naval Research Young Investigator Award and a Pratt School of Engineering Distinguished Teaching Award. While Dr. Mann maintains a generalinterest in the field of dynamical systems, his present research repertoire includes the dynamics of time delayed systems, nonlinear dynamics in electromechanical systems, and nonlinear interactions in energy harvesting systems. |
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Notes |
Refreshments will be served. |
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