Dr. Kevin M. Farinholt Profile

Dr. Kevin M. Farinholt

Senior Research Engineer at Luna Innovations Inc

SPIE Involvement:

Editor | Author

Publications (25)

Proceedings Article | 1 April 2015 Paper

Energy harvesting to power embedded condition monitoring hardware

Kevin Farinholt, Nathan Brown, Jake Siegel, Justin McQuown, Robert Humphris

Proceedings Volume 9433, 94330W (2015) https://doi.org/10.1117/12.2083852

KEYWORDS: Capacitors, Solar energy, Solar cells, Energy harvesting, Photovoltaics, Sensors, Thermoelectric materials, Light sources and illumination, LED lighting, Remote sensing

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Proceedings Article | 29 March 2013 Paper

Multi-source energy harvesting for wireless SHM systems

Mijin Choi, Kevin Farinholt, Steven Anton, Jung-Ryul Lee, Gyuhae Park

Proceedings Volume 8690, 869008 (2013) https://doi.org/10.1117/12.2011883

KEYWORDS: Energy harvesting, Capacitors, Wind energy, Electromagnetism, Structural health monitoring, Sensors, Solar energy, Sensing systems, Energy efficiency, Magnetism

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Proceedings Article | 29 March 2013 Paper

Powering embedded electronics for wind turbine monitoring using multi-source energy harvesting techniques

S. Anton, S. Taylor, E. Raby, K. Farinholt

Proceedings Volume 8690, 869007 (2013) https://doi.org/10.1117/12.2010637

KEYWORDS: Capacitors, Sensors, Energy harvesting, Wind energy, Solar cells, Solar energy, Microsoft Foundation Class Library, Electronics, Sensing systems, Wind turbine technology

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Proceedings Article | 30 March 2012 Paper

Full-scale fatigue tests of CX-100 wind turbine blades. Part II: analysis

Stuart Taylor, Hyomi Jeong, Jae Kyeong Jang, Gyuhae Park, Kevin Farinholt, Michael Todd, Curtt Ammerman

Proceedings Volume 8343, 83430Q (2012) https://doi.org/10.1117/12.917497

KEYWORDS: Sensors, Wave propagation, Structural health monitoring, Analytical research, Principal component analysis, Data acquisition, Autoregressive models, Manufacturing, Diagnostics, Wind turbine technology

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Proceedings Article | 30 March 2012 Paper

Full-scale fatigue tests of CX-100 wind turbine blades. Part I: testing

Kevin Farinholt, Stuart Taylor, Gyuhae Park, Curtt Ammerman

Proceedings Volume 8343, 83430P (2012) https://doi.org/10.1117/12.917493

KEYWORDS: Sensors, Ferroelectric materials, Unattended ground sensors, Structural health monitoring, Aerodynamics, Active remote sensing, Transducers, Manufacturing, Stars, Wind turbine technology

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Proceedings Article | 30 March 2012 Paper

Hybrid energy harvesting/transmission system for embedded devices

Adam Hehr, Gyuhae Park, Kevin Farinholt

Proceedings Volume 8343, 834307 (2012) https://doi.org/10.1117/12.915461

KEYWORDS: Electromagnetism, Energy harvesting, Antennas, Transducers, Sensing systems, Sensors, Microwave radiation, Magnetism, Embedded systems, Electronics

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Proceedings Article | 30 March 2012 Paper

Evaluation of energy harvesting conditioning circuits

Trevor Avant, Jesse Cruce, Gyuhae Park, Kevin Farinholt

Proceedings Volume 8343, 83430A (2012) https://doi.org/10.1117/12.915463

KEYWORDS: Energy harvesting, Capacitors, Transducers, Solar energy, Atomic layer deposition, Electromechanical design, Electronics, Switching, Energy efficiency, Integrated circuit design

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Proceedings Article | 28 March 2012 Paper

An evaluation on low-level vibration energy harvesting using piezoelectret foam

S. Anton, K. Farinholt

Proceedings Volume 8341, 83410G (2012) https://doi.org/10.1117/12.915432

KEYWORDS: Foam, Ferroelectric polymers, Energy harvesting, Polymers, Manufacturing, Wind energy, Amplifiers, Resistance, Ferroelectric materials, Electrodes

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Proceedings Article | 29 April 2011 Paper

Sensor self-diagnostics for piezoelectric transducers operating in harsh temperature environments

Yan Zheng, Christian Martinez, Daniel Easton, Gyuhae Park, Kevin Farinholt

Proceedings Volume 7979, 79790O (2011) https://doi.org/10.1117/12.882009

KEYWORDS: Sensors, Ferroelectric materials, Transducers, Cryogenics, Environmental sensing, Structural health monitoring, Aluminum, Liquids, Nitrogen, Diagnostics

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Proceedings Article | 29 April 2011 Paper

Piezoelectric active sensing techniques for damage detection on wind turbine blades

Gyuhae Park, Kevin Farinholt, Stuart Taylor, Charles Farrar

Proceedings Volume 7979, 79790K (2011) https://doi.org/10.1117/12.882001

KEYWORDS: Structural health monitoring, Sensors, Ferroelectric materials, Damage detection, Wave propagation, Transducers, Microsoft Foundation Class Library, Actuators, Composites, Wind turbine technology

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Proceedings Article | 28 April 2011 Paper

Hybrid energy sources for embedded sensor nodes

Ramon Silva, Kevin Farinholt, Gyuhae Park

Proceedings Volume 7979, 797905 (2011) https://doi.org/10.1117/12.882010

KEYWORDS: Sensors, Ferroelectric materials, Energy harvesting, Solar energy, Antennas, Capacitors, Structural health monitoring, Sensor networks, Data storage, Connectors

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Proceedings Article | 28 April 2011 Paper

Embedded processing for SHM with integrated software control of a wireless impedance device

Stuart Taylor, Joetta Carroll, Kevin Farinholt, Gyuhae Park, Charles Farrar, Michael Todd

Proceedings Volume 7979, 797904 (2011) https://doi.org/10.1117/12.881976

KEYWORDS: Sensors, Structural health monitoring, Diagnostics, Sensor networks, MATLAB, Ferroelectric materials, Bridges, Control systems, Data storage, Data acquisition

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Proceedings Article | 9 April 2010 Paper

Time series predictive models of piezoelectric active-sensing for SHM applications

Gyuhae Park, Eloi Figueiredo, Kevin Farinholt, Charles Farrar

Proceedings Volume 7650, 765004 (2010) https://doi.org/10.1117/12.847690

KEYWORDS: Autoregressive models, Data modeling, Structural health monitoring, Composites, Mahalanobis distance, Signal processing, Analytical research, Feature extraction, Algorithm development, Statistical analysis

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Proceedings Article | 29 March 2010 Paper

Multi-source energy harvester to power sensing hardware on rotating structures

Alexander Schlichting, Scott Ouellette, Clinton Carlson, Kevin Farinholt, Gyuhae Park, Charles Farrar

Proceedings Volume 7645, 764503 (2010) https://doi.org/10.1117/12.847708

KEYWORDS: Solar energy, Capacitors, Solar cells, Sensors, Energy harvesting, Photovoltaics, Solar radiation, Wind energy, Ferroelectric materials, Wind turbine technology

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Proceedings Article | 29 March 2010 Paper

Wireless energy transmission to supplement energy harvesters in sensor network applications

K. Farinholt, S. Taylor, G. Park, C. Farrar

Proceedings Volume 7645, 764505 (2010) https://doi.org/10.1117/12.848790

KEYWORDS: Sensors, Energy harvesting, Wind energy, Ferroelectric materials, Structural health monitoring, Antennas, Solar energy, Capacitors, Sensor networks, Data storage

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Proceedings Article | 9 April 2009 Paper

An efficient signal processing tool for impedance-based structural health monitoring

Megan O'Brien, Stuart Taylor, Kevin Farinholt, Gyuhae Park, Charles Farrar

Proceedings Volume 7295, 72951K (2009) https://doi.org/10.1117/12.815532

KEYWORDS: Sensors, Ferroelectric materials, Structural health monitoring, Signal processing, Damage detection, Data storage, Sun, Diagnostics, Autoregressive models, Temperature metrology

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Proceedings Article | 7 April 2009 Paper

Energy harvesting and wireless energy transmission for embedded sensor nodes

Kevin Farinholt, Stuart Taylor, Nathan Miller, Wilfredo Sifuentes, Erik Moro, Gyuhae Park, Charles Farrar, Eric Flynn, David Mascarenas, Michael Todd

Proceedings Volume 7288, 728810 (2009) https://doi.org/10.1117/12.815529

KEYWORDS: Sensors, Antennas, Energy harvesting, Bridges, Ferroelectric materials, Structural health monitoring, Transducers, Capacitors, Thermoelectric materials, Wind energy

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Proceedings Article | 30 March 2009 Paper

Wireless impedance device for electromechanical impedance sensing and low-frequency vibration data acquisition

Stuart Taylor, Kevin Farinholt, Gyuhae Park, Charles Farrar, Eric Flynn, David Mascarenas, Michael Todd

Proceedings Volume 7292, 729228 (2009) https://doi.org/10.1117/12.815534

KEYWORDS: Sensors, Data acquisition, Structural health monitoring, Data storage, Sensor networks, Bridges, Connectors, Microcontrollers, Multiplexers, Data transmission

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Proceedings Article | 11 April 2008 Paper

Demonstration of a roving-host wireless sensor network for rapid assessment monitoring of structural health

David D. Mascarenas, Eric Flynn, Kaisen Lin, Kevin Farinholt, Gyuhae Park, Rajesh Gupta, Michael Todd, Charles Farrar

Proceedings Volume 6933, 69330K (2008) https://doi.org/10.1117/12.775592

KEYWORDS: Antennas, Sensors, Capacitors, Switches, Bridges, Sensor networks, Microcontrollers, Structural health monitoring, Receivers, Distortion

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Proceedings Article | 27 April 2007 Paper

Adaptive positive position feedback for energy absorption in acoustic cavities

M. Austin Creasy, Donald Leo, Kevin Farinholt

Proceedings Volume 6525, 652525 (2007) https://doi.org/10.1117/12.716108

KEYWORDS: Acoustics, Linear filtering, Control systems, Systems modeling, Absorption, Temperature metrology, Scanning probe lithography, Data modeling, Device simulation, Actuators

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Proceedings Article | 27 April 2007 Paper

Harvesting of electrical energy from a backpack using piezoelectric shoulder straps

Henry Sodano, Jonathan Granstrom, Joel Feenstra, Kevin Farinholt

Proceedings Volume 6525, 652502 (2007) https://doi.org/10.1117/12.715773

KEYWORDS: Ferroelectric polymers, Electronics, Electrodes, Energy harvesting, Polymers, Capacitance, Resistance, Capacitors, Data modeling, Solar energy

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Over the past few decades the use of portable and wearable electronics has grown steadily. These devices are becoming increasingly more powerful, however, the gains that have been made in the device performance has resulted in the need for significantly higher power to operate the electronics. This issue has been further complicated due to the stagnate growth of battery technology over the past decade. In order to increase the life of these electronics, researchers have begun investigating methods of generating energy from ambient sources such that the life of the electronics can be prolonged. Recent developments in the field have led to the design of a number of mechanisms that can be used to generate electrical energy, from a variety of sources including thermal, solar, strain, inertia, etc. Many of these energy sources are available for use with humans, but their use must be carefully considered such that parasitic effects that could disrupt the user's gait or endurance are avoided. These issues have arisen from previous attempts to integrate power harvesting mechanisms into a shoe such that the energy released during a heal strike could be harvested. This study develops a novel energy harvesting backpack that can generate electrical energy from the differential forces between the wearer and the pack. The goal of this system is to make the energy harvesting device transparent to the wearer such that his or her endurance and dexterity is not compromised. This will be accomplished by replacing the traditional strap of the backpack with one made of the piezoelectric polymer polyvinylidene fluoride (PVDF). Piezoelectric materials have a structure such that an applied electrical potential results in a mechanical strain. Conversely, an applied stress results in the generation of an electrical charge, which makes the material useful for power harvesting applications. PVDF is highly flexible and has a high strength allowing it to effectively act as the load bearing member. In order to preserve the performance of the backpack and user, the design of the pack will be held as close to existing systems as possible. This paper develops a theoretical model of the piezoelectric strap and uses experimental testing to identify its performance in this application.

Proceedings Article | 16 May 2005 Paper

Electrical impedance modeling of ionic polymer transducers

Kevin Farinholt, Donald Leo

Proceedings Volume 5761, (2005) https://doi.org/10.1117/12.600229

KEYWORDS: Polymers, Transducers, Motion models, Ions, Electrodes, Differential equations, Lithium, Astatine, Convolution, Systems modeling

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Proceedings Article | 6 May 2005 Paper

Computational models of ionic transport and electromechanical transduction in ionomeric polymer transducers

Donald Leo, Kevin Farinholt, Thomas Wallmersperger

Proceedings Volume 5759, (2005) https://doi.org/10.1117/12.599539

KEYWORDS: Polymers, Transducers, Electrodes, Data modeling, Ions, Distortion, Computer simulations, Mechanics, Numerical simulations, Systems modeling

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Proceedings Article | 21 July 2004 Paper

Effects of counter-ion, solvent type, and loading condition on the material response of ionic polymer transducers

Kevin Farinholt, Donald Leo

Proceedings Volume 5387, (2004) https://doi.org/10.1117/12.538837

KEYWORDS: Transducers, Polymers, Lithium, Cesium, Dielectrics, Motion models, Sodium, Calcium, Electrodes, Electromechanical design

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Proceedings Article | 13 August 2003 Paper

Electromechanical modeling of charge sensing in ionic polymers

Kevin Farinholt, Donald Leo

Proceedings Volume 5053, (2003) https://doi.org/10.1117/12.484702

KEYWORDS: Polymers, Lithium, Data modeling, Transducers, Motion models, Electrodes, Systems modeling, Mechanics, Actuators, Ions

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Showing 5 of 25 publications

Proceedings Volume Editor (6)

SPIE Conference Volume | 12 May 2015

Industrial and Commercial Applications of Smart Structures Technologies 2015

SPIE Conference Volume | 5 May 2014

Industrial and Commercial Applications of Smart Structures Technologies 2014

SPIE Conference Volume | 18 April 2013

Industrial and Commercial Applications of Smart Structures Technologies 2013

SPIE Conference Volume | 19 April 2012

Industrial and Commercial Applications of Smart Structures Technologies 2012

SPIE Conference Volume | 30 March 2011

Industrial and Commercial Applications of Smart Structures Technologies 2011

Showing 5 of 6 publications

Conference Committee Involvement (15)

Smart Structures and NDE for Industry 4.0, Smart Cities, and Energy Systems

27 April 2020 | Online Only, California, United States

Smart Structures and NDE for Energy Systems and Industry 4.0

4 March 2019 | Denver, Colorado, United States

Smart Structures and NDE for Industry 4.0

5 March 2018 | Denver, Colorado, United States

Industrial and Commercial Applications of Smart Structures Technologies XI

26 March 2017 | Portland, Oregon, United States

Industrial and Commercial Applications of Smart Structures Technologies X

21 March 2016 | Las Vegas, Nevada, United States

Industrial and Commercial Applications of Smart Structures Technologies IX

9 March 2015 | San Diego, California, United States

Industrial and Commercial Applications of Smart Structures Technologies VIII

11 March 2014 | San Diego, California, United States

Industrial and Commercial Applications of Smart Structures Technologies VII

10 March 2013 | San Diego, California, United States

Industrial and Commercial Applications of Smart Structures Technologies VI

12 March 2012 | San Diego, California, United States

Industrial and Commercial Applications of Smart Structures Technologies V

7 March 2011 | San Diego, California, United States

Industrial and Commercial Applications of Smart Structures Technologies IV

8 March 2010 | San Diego, California, United States

Industrial and Commercial Applications of Smart Structures Technologies IV

8 March 2010 | San Diego, California, United States

Industrial and Commercial Applications of Smart Structures Technologies III

9 March 2009 | San Diego, California, United States

Industrial and Commercial Applications of Smart Structures Technologies II

10 March 2008 | San Diego, California, United States

Industrial and Commercial Applications of Smart Structures Technologies

19 March 2007 | San Diego, California, United States

Showing 5 of 15 Conference Committees

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