Prof. Gregory P. Carman Profile

Prof. Gregory P. Carman

Professor at Univ of California Los Angeles

SPIE Involvement:

Conference Program Committee | Author

Publications (89)

Proceedings Article | 18 April 2022 Presentation

Experimental demonstration of a multiferroic antenna for use in biomedical applications

Emily Burnside, Sidhant Tiwari, Nishanth Virushabadoss, Schaffer Grimm, Robert Candler, Kalyanam Shivkumar, Rashaunda Henderson, Gregory Carman

Proceedings Volume PC12043, (2022) https://doi.org/10.1117/12.2612455

KEYWORDS: Antennas, Biomedical optics, Magnetism, Dielectrics, Pollution control, Medical device development, Heart, Data communications, Analytical research

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Proceedings Article | 24 April 2020 Presentation

Frequency conversion through nonlinear mixing in acoustic waves (Conference Presentation)

Joseph Schneider, Ting Lu, Sidhant Tiwari, Xiating Zou, Ajit Mal, Robert Candler, Yuanxun Wang, Greg Carman

Proceedings Volume 11379, 113792I (2020) https://doi.org/10.1117/12.2558673

KEYWORDS: Aluminum nitride, Capacitance, Motion models, Inductance, Electronics, Acoustics, Silicon, Platinum, Circuit switching, Resistance

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Proceedings Article | 22 March 2018 Paper

Modeling the effects of strain profiles and defects on precessional magnetic switching in multiferroic heterostructures

Andres Chavez, Auni Kundu, Christopher Lynch, Gregory Carman

Proceedings Volume 10596, 1059622 (2018) https://doi.org/10.1117/12.2296699

KEYWORDS: Magnetism, Anisotropy, Switching, Electrodes, Ferroelectric materials, Motion models, Finite element methods, Thin films

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Proceedings Article | 10 May 2017 Presentation

Strain mediated multiferroic motors (Conference Presentation)

John Domann, Greg Carman

Proceedings Volume 10165, 1016517 (2017) https://doi.org/10.1117/12.2263403

KEYWORDS: Magnetism, Anisotropy, Control systems, Composites, Heterojunctions, Ferromagnetics, Mechanics, Multifunctional materials, Current controlled current source

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Proceedings Article | 10 May 2017 Presentation

Strain powered magnetic antennas (Conference Presentation)

John Domann, Greg Carman

Proceedings Volume 10165, 1016503 (2017) https://doi.org/10.1117/12.2263330

KEYWORDS: Antennas, Electronics, Free space, Electromagnetism, Quartz, Instrument modeling, Electrodynamics, Magnetism, Oscillators, Heterojunctions

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Proceedings Article | 10 May 2017 Presentation

Magnetoelastic shockwave response (Conference Presentation)

John Domann, Ryan Crum, Vijay Gupta, Greg Carman

Proceedings Volume 10165, 1016514 (2017) https://doi.org/10.1117/12.2263254

KEYWORDS: Interferometry, Failure analysis, Diagnostics, Nd:YAG lasers, Chemical oxygen iodine lasers, Magnetism, Wave propagation, Wavefronts, Mechanics, Multifunctional materials

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Proceedings Article | 5 October 2015 Presentation

Voltage control of nanoscale magnetoelastic elements: theory and experiments (Presentation Recording)

Gregory Carman

Proceedings Volume 9551, 95511L (2015) https://doi.org/10.1117/12.2190973

KEYWORDS: Magnetism, Data modeling, Transmission electron microscopy, Electromagnetism, Analytical research, Partial differential equations, Electron microscopy, Microscopy, Multiphoton fluorescence microscopy, Control systems

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Proceedings Article | 16 April 2014 Paper

Recovering strain readings from chirping fiber Bragg gratings in composite overwrapped pressure vessels

Scott Strutner, Frank Pena, Anthony Piazza, Allen Parker, W. Lance Richards, Gregory Carman

Proceedings Volume 9059, 90590F (2014) https://doi.org/10.1117/12.2045148

KEYWORDS: Fiber Bragg gratings, Composites, Sensors, Epoxies, Structural health monitoring, Polarization, Failure analysis, Liquids, Glasses, Birefringence

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Proceedings Article | 1 April 2014 Paper

Vibration energy harvesting using a spherical permanent magnet

Scott Moss, Genevieve Hart, Stephen Burke, Steve Galea, Gregory Carman

Proceedings Volume 9057, 90570S (2014) https://doi.org/10.1117/12.2047796

KEYWORDS: Optical spheres, Magnetism, Energy harvesting, Spherical lenses, 3D modeling, Mathematical modeling, Electromagnetism, Resistance, Data modeling, Copper

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Proceedings Article | 28 March 2012 Paper

Plane wave dynamics in multiferroic materials using Maxwell's equations and equation of motion

Scott Keller, Gregory Carman

Proceedings Volume 8342, 834204 (2012) https://doi.org/10.1117/12.923595

KEYWORDS: Phase velocity, Electromagnetism, Wave propagation, Radio propagation, Composites, Magnetism, Maxwell's equations, Acoustics, Electromagnetic radiation, Ferromagnetics

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Proceedings Article | 28 April 2011 Paper

Giant electrical control of magnetic anisotropy in magnetoelectric heterostructures using (011) PMN-PT single crystal

Tao Wu, Alexandre Bur, Hyungsuk K. Kim, Ping Zhao, Gregory Carman

Proceedings Volume 7978, 797818 (2011) https://doi.org/10.1117/12.880701

KEYWORDS: Magnetism, Anisotropy, Nickel, Heterojunctions, Crystals, Thin films, Composites, Switching, Nonlinear crystals, Ferromagnetics

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Proceedings Article | 1 April 2011 Paper

A novel hyper-elastic thin film nitinol covered stent significantly decreases intra-aneurysmal flow in vitro

Youngjae Chun, Soojung Hur, Colin Kealey, Daniel Levi, K. Mohanchandra, Dino Di Carlo, Gregory Carman

Proceedings Volume 7984, 79840V (2011) https://doi.org/10.1117/12.880609

KEYWORDS: Neck, Instrument modeling, In vitro testing, Glasses, Particles, Thin films, Neodymium, Arteries, Control systems, Hemodynamics

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Proceedings Article | 10 April 2010 Paper

Vibro-impacting power harvester

Scott Moss, Ian Powlesland, Stephen Galea, Gregory Carman

Proceedings Volume 7643, 76431A (2010) https://doi.org/10.1117/12.848897

KEYWORDS: Structural health monitoring, Sensors, Modeling, Manufacturing, Aluminum, Energy harvesting, Aircraft structures, Computer aided design, Oscillators, Aerospace engineering

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Proceedings Article | 9 April 2010 Paper

Micro patterning processes for thin film nitinol endografts and evaluation of endothelialization in swine model

Youngjae Chun, Daniel Levi, K. Mohanchandra, Allan Tulloch, David Rigberg, Fernando Vinuela, Gregory Carman

Proceedings Volume 7650, 76502T (2010) https://doi.org/10.1117/12.847588

KEYWORDS: Thin films, Silicon, Wet etching, Etching, Silica, Copper, Tissues, Scanning electron microscopy, Image processing, Photoresist materials

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Proceedings Article | 31 March 2010 Paper

Magnetoelectric laminate composites with prestress consideration

Tao Wu, Michael Emmons, Alexandre Bur, Jian Sorge, Gregory Carman

Proceedings Volume 7644, 764415 (2010) https://doi.org/10.1117/12.847794

KEYWORDS: Magnetism, Composites, Anisotropy, Microsoft Foundation Class Library, Magnetostrictive materials, Epoxies, Magnetic sensors, Polarization, Amplifiers, Ferromagnetics

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Proceedings Article | 8 April 2009 Paper

Characterization and birefringence effect on embedded optical fiber Bragg gratings

M. Emmons, G. Carman, K. Mohanchandra, W. Richards

Proceedings Volume 7295, 72950C (2009) https://doi.org/10.1117/12.815539

KEYWORDS: Fiber Bragg gratings, Optical fibers, Birefringence, Composites, Structured optical fibers, Reflection, Sensors, Polarization, Carbon, Epoxies

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Proceedings Article | 7 April 2009 Paper

Superelastic NiTi thin film small vessel graft for vascular repair

Youngjae Chun, Daniel Levi, K. Mohanchandra, Fernando Vinuela, Gregory Carman

Proceedings Volume 7288, 728804 (2009) https://doi.org/10.1117/12.815400

KEYWORDS: Thin films, Arteries, In vitro testing, Body temperature, Sputter deposition, Blood circulation, Atrial fibrillation, Francium, In vivo imaging, Hemodynamics

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Proceedings Article | 1 April 2009 Paper

Magnetoelectric device demonstrating nanoscale magnetic domain control

Tien-Kan Chung, Scott Keller, Gregory Carman

Proceedings Volume 7289, 72891S (2009) https://doi.org/10.1117/12.815890

KEYWORDS: Magnetism, Nickel, Ferroelectric materials, Multiphoton fluorescence microscopy, Thin films, Control systems, Platinum, Electrodes, Electromagnetism, Ferromagnetics

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Proceedings Article | 22 April 2008 Paper

Development of a high flow-rate/high operating frequency nitinol MEMS valve

Myunghoon Seong, K. Mohanchandra, Yohan Lin, Gregory Carman

Proceedings Volume 6932, 69322F (2008) https://doi.org/10.1117/12.775812

KEYWORDS: Microelectromechanical systems, Actuators, Chromium, Finite element methods, Sensors, Data modeling, Silicon, Thin films, Polymers, Sputter deposition

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Proceedings Article | 27 April 2007 Paper

Passive vibration damping with magnetostrictive composite material

Joseph Maly, Gregory Carmen, James Goodding, Catherine Kerrigan, Ken Ho

Proceedings Volume 6525, 652515 (2007) https://doi.org/10.1117/12.717873

KEYWORDS: Terbium, Magnetism, Composites, Particles, Manufacturing, Finite element methods, Temperature metrology, Crystals, Dysprosium, Iron

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Proceedings Article | 27 April 2007 Paper

Microscale damping using thin film active materials

Catherine Kerrigan, Ken Ho, K. Mohanchandra, Gregory Carman

Proceedings Volume 6525, 65250V (2007) https://doi.org/10.1117/12.716592

KEYWORDS: Thin films, Silicon, Silicon films, Absorption, Nickel, Microelectromechanical systems, Terbium, Shape memory alloys, Dysprosium, Semiconducting wafers

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Proceedings Article | 11 April 2007 Paper

Immersive training and mentoring for laparoscopic surgery

Vasile Nistor, Brian Allen, E. Dutson, P. Faloutsos, G. Carman

Proceedings Volume 6528, 65280Q (2007) https://doi.org/10.1117/12.717199

KEYWORDS: Surgery, Sensors, Laparoscopy, Magnetic sensors, Visualization, Kinematics, Magnetic tracking, Human-machine interfaces, Endoscopy, Computing systems

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We describe in this paper a training system for minimally invasive surgery (MIS) that creates an immersive training simulation by recording the pathways of the instruments from an expert surgeon while performing an actual training task. Instrument spatial pathway data is stored and later accessed at the training station in order to visualize the ergonomic experience of the expert surgeon and trainees. Our system is based on tracking the spatial position and orientation of the instruments on the console for both the expert surgeon and the trainee. The technology is the result of recent developments in miniaturized position sensors that can be integrated seamlessly into the MIS instruments without compromising functionality. In order to continuously monitor the positions of laparoscopic tool tips, DC magnetic tracking sensors are used. A hardware-software interface transforms the coordinate data points into instrument pathways, while an intuitive graphic user interface displays the instruments spatial position and orientation for the mentor/trainee, and endoscopic video information. These data are recorded and saved in a database for subsequent immersive training and training performance analysis. We use two 6 DOF DC magnetic trackers with a sensor diameter of just 1.3 mm - small enough for insertion into 4 French catheters, embedded in the shaft of a endoscopic grasper and a needle driver. One sensor is located at the distal end of the shaft while the second sensor is located at the proximal end of the shaft. The placement of these sensors does not impede the functionally of the instrument. Since the sensors are located inside the shaft there are no sealing issues between the valve of the trocar and the instrument. We devised a peg transfer training task in accordance to validated training procedures, and tested our system on its ability to differentiate between the expert surgeon and the novices, based on a set of performance metrics. These performance metrics: motion smoothness, total path length, and time to completion, are derived from the kinematics of the instrument. An affine combination of the above mentioned metrics is provided to give a general score for the training performance. Clear differentiation between the expert surgeons and the novice trainees is visible in the test results. Strictly kinematics based performance metrics can be used to evaluate the training progress of MIS trainees in the context of UCLA - LTS.

Proceedings Article | 5 April 2006 Paper

Modeling of coupling effect in magneto-electric layered composites

Chia-Ming Chang, Gregory Carman

Proceedings Volume 6173, 617317 (2006) https://doi.org/10.1117/12.658959

KEYWORDS: Composites, Magnetism, Ferroelectric materials, Magnetostrictive materials, Interfaces, Data modeling, Lanthanum, Strontium, Aerospace engineering, Piezoelectric effects

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Proceedings Article | 17 March 2006 Paper

Passive damping of thin film Nitinol

Catherine Kerrigan, K. Mohachandra, Gregory Carman

Proceedings Volume 6169, 61690M (2006) https://doi.org/10.1117/12.658824

KEYWORDS: Thin films, Silicon, Microelectromechanical systems, Shape memory alloys, Semiconducting wafers, Multilayers, Absorption, Silicon films, Temperature metrology, Nickel

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Proceedings Article | 17 May 2005 Paper

Characterization of a piezohydraulic actuator

R. Marie Tieck, Gregory Carman, Yohan Lin, Conal O'Neill

Proceedings Volume 5764, (2005) https://doi.org/10.1117/12.605351

KEYWORDS: Actuators, Microelectromechanical systems, Manufacturing, Power supplies, Ceramics, System integration, Fluid dynamics, Lithium, Resistors, Water

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Proceedings Article | 5 May 2005 Paper

Miniature thin-film NiTi hydraulic actuator with MEMS microvalves

Geoff McKnight, Leslie Momoda, Don Croft, Dong Lee, Daniel Shin, Greg Carman

Proceedings Volume 5762, (2005) https://doi.org/10.1117/12.607307

KEYWORDS: Actuators, Thin films, Microelectromechanical systems, Silicon, Shape memory alloys, Etching, Manufacturing, Silicon films, Electronics, Nanolithography

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Proceedings Article | 5 May 2005 Paper

Stoichiometric study of TbxDy(1-x)Fe2 particulate composites for passive damping

Ken Ho, Catherine Kerrigan, Omar Luna, Gregory Carman

Proceedings Volume 5762, (2005) https://doi.org/10.1117/12.607298

KEYWORDS: Composites, Terbium, Magnetism, Magnetostrictive materials, Dysprosium, Iron, Particles, Epoxies, Anisotropy, Crystals

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Proceedings Article | 26 July 2004 Paper

Smart material actuators for airfoil morphing applications

Ruth Tieck, K. Mohanchandra, Gregory Carman

Proceedings Volume 5390, (2004) https://doi.org/10.1117/12.540342

KEYWORDS: Actuators, Thin films, Ultrasonics, Shape memory alloys, Smart materials, Fiber reinforced polymers, Resistance, Sputter deposition, Nickel, Manufacturing

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Proceedings Article | 26 July 2004 Paper

Characterization of embedded fiber optic sensors in advanced composite materials for structural health monitoring

W. Richards, Dong Gun Lee, Anthony Piazza, Anna Stewart, Gregory Carman

Proceedings Volume 5390, (2004) https://doi.org/10.1117/12.540151

KEYWORDS: Sensors, Composites, Fiber optics sensors, Calibration, Seaborgium, Structural health monitoring, Fiber optics, Sensor calibration, Manufacturing, Smart structures

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Proceedings Article | 21 July 2004 Paper

High-energy absorption in bulk ferromagnetic shape memory alloys (Ni50Mn29Ga21)

Eric Gans, Chris Henry, Gregory Carman

Proceedings Volume 5387, (2004) https://doi.org/10.1117/12.540124

KEYWORDS: Nickel, Manganese, Gallium, Absorption, Magnetism, Crystals, Shape memory alloys, Gallium nitride, Composites, Ferromagnetics

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Proceedings Article | 21 July 2004 Paper

Damping of polycrystalline Ni-Mn-Ga, bulk, PLD, and sputtered thin film

David Ruggles, Eric Gans, Kotekar Mohanchandra, Gregory Carman, E. Ngo, W. Nothwang, M. Cole

Proceedings Volume 5387, (2004) https://doi.org/10.1117/12.540185

KEYWORDS: Thin films, Copper, Silicon, Crystals, Nickel, Thin film deposition, Sputter deposition, Manganese, Gallium, Pulsed laser deposition

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Proceedings Article | 21 July 2004 Paper

The analysis and effective coupling of linear ferroelectro-magnetic continua

Grayson Bush, Gregory Carman

Proceedings Volume 5387, (2004) https://doi.org/10.1117/12.539836

KEYWORDS: Magnetism, Modulation, Electromagnetic coupling, Energy harvesting, Crystals, Composites, Magnetostrictive materials, Thin film devices, Perovskite, Ferromagnetics

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Proceedings Article | 21 July 2004 Paper

Forced volume magnetostriction in composite Gd5Si2Ge2

Nersesse Nersessian, Siu Or, Gregory Carman, Scott McCall, Wonyoung Choe, Harry Radousky, Vitalij Pecharsky, Alexandra Pecharsky

Proceedings Volume 5387, (2004) https://doi.org/10.1117/12.540176

KEYWORDS: Gadolinium, Silicon, Germanium, Composites, Magnetism, Magnetostrictive materials, Temperature metrology, Particles, Manufacturing, Ferromagnetics

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Proceedings Article | 30 January 2004 Paper

Shape memory alloy film for deployment and control of membrane apertures

Lisa Hill, Greg Carman, Dong-Gun Lee, Brian Patrick

Proceedings Volume 5166, (2004) https://doi.org/10.1117/12.506311

KEYWORDS: Shape memory alloys, Thin films, Polymers, Silicon, Semiconducting wafers, Composites, Titanium, Crystals, Sputter deposition, Microelectromechanical systems

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Proceedings Article | 14 August 2003 Paper

Thin-layer magnetostrictive composite films for turbomachinery fan blade damping

Wade Pulliam, Donggun Lee, Gregory Carman, Geoffrey McKnight

Proceedings Volume 5054, (2003) https://doi.org/10.1117/12.483725

KEYWORDS: Composites, Magnetism, Magnetostrictive materials, Fluctuations and noise, Finite element methods, Aluminum, Manufacturing, Thin films, Absorption, Iron

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Proceedings Article | 14 August 2003 Paper

Miniature actuator using thin-film shape-memory alloy

Daniel Shin, Kotekar Mohanchandra, Dong Gun Lee, Gregory Carman

Proceedings Volume 5054, (2003) https://doi.org/10.1117/12.483732

KEYWORDS: Actuators, Shape memory alloys, Thin films, Liquids, Thin film devices, Head, Prototyping, Silicon, Silicon films, Nitrogen

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Proceedings Article | 14 August 2003 Paper

Compact hybrid actuator device (CHAD) for ultracompact navigation, guidance, and control

Leslie Momoda, Donald Croft, Gregory Carman, Daniel Shin

Proceedings Volume 5054, (2003) https://doi.org/10.1117/12.483889

KEYWORDS: Actuators, Shape memory alloys, Thin films, Electronics, Minerals, Control systems, Liquids, Temperature metrology, Silicon films, Navigation systems

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Proceedings Article | 13 August 2003 Paper

Temperature- and magnetic-field-induced phase transformation in bulk and composite Gd₅Si₂Ge₂

Nersesse Nersessian, Siu Or, Gregory Carman, Wonyoung Choe, Harry Radousky, Vitalij Pecharsky, Alexandra Pecharsky

Proceedings Volume 5053, (2003) https://doi.org/10.1117/12.484719

KEYWORDS: Gadolinium, Silicon, Germanium, Composites, Temperature metrology, Magnetism, Magnetostrictive materials, Crystals, Particles, Ferromagnetics

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Proceedings Article | 13 August 2003 Paper

Composition and annealing effects on the mechanical properties of superelastic thin film nickel titanium

Jason Woolman, Kotekar Mohanchandra, Gregory Carman

Proceedings Volume 5053, (2003) https://doi.org/10.1117/12.484707

KEYWORDS: Annealing, Nickel, Temperature metrology, Thin films, Titanium, Crystals, Sputter deposition, Shape memory alloys, Heat treatments, Atrial fibrillation

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Proceedings Article | 13 August 2003 Paper

Grown crystalline Ni-Ti shape memory alloy thin films

Kotekar Mohanchandra, Gregory Carman

Proceedings Volume 5053, (2003) https://doi.org/10.1117/12.484742

KEYWORDS: Crystals, Thin films, Sputter deposition, Shape memory alloys, Temperature metrology, Transmission electron microscopy, Annealing, Silicon, X-ray diffraction, Single crystal X-ray diffraction

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Proceedings Article | 5 August 2003 Paper

Thermography technique for graphite/epoxy composite structures utilizing embedded thermal fiber optic sensors

Anna Stewart, Gregory Carman, W. Lance Richards

Proceedings Volume 5056, (2003) https://doi.org/10.1117/12.483383

KEYWORDS: Fiber optics sensors, Composites, Thermography, Nondestructive evaluation, Lamps, Temperature metrology, Infrared cameras, Sensors, Infrared sensors, Fiber optics tests

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Proceedings Article | 1 August 2003 Paper

A free energy model for thin-film shape memory alloys

Jordan Massad, Ralph Smith, Gregory Carman

Proceedings Volume 5049, (2003) https://doi.org/10.1117/12.484017

KEYWORDS: Shape memory alloys, Thin films, Data modeling, Temperature metrology, Microactuators, Microelectromechanical systems, Performance modeling, Scientific research, Stochastic processes, Homogenization

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Proceedings Article | 22 July 2003 Paper

Microvalve for SMA-based CHAD

Dong Gun Lee, Quanfang Chen, Daniel Shin, Gregory Carman

Proceedings Volume 5055, (2003) https://doi.org/10.1117/12.483593

KEYWORDS: Nickel, Shape memory alloys, Silicon, Actuators, Finite element methods, Microelectromechanical systems, Deep reactive ion etching, Etching, Photoresist materials, Failure analysis

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Proceedings Article | 15 July 2002 Paper

Development of a SMA-based actuator for compact kinetic energy missile

Daniel Shin, Donggun Lee, Kotekar Mohanchandra, Gregory Carman

Proceedings Volume 4701, (2002) https://doi.org/10.1117/12.474662

KEYWORDS: Actuators, Shape memory alloys, Thin films, Missiles, Liquids, CFD analysis, Prototyping, Smart materials, Water, Data modeling

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Proceedings Article | 15 July 2002 Paper

Piezoelectric hydraulic pump with innovative active valves

Donggun Lee, Siu Or, Conal O'Neill, Gregory Carman

Proceedings Volume 4701, (2002) https://doi.org/10.1117/12.474689

KEYWORDS: Ferroelectric materials, Actuators, Solids, 3D modeling, Finite element methods, Prototyping, Ceramics, Fluid dynamics, Shape memory alloys, Failure analysis

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Proceedings Article | 15 July 2002 Paper

Use of imbedded fiber optic thermal sensors to monitor the health of composite structures

Anna Stewart, Gregory Carman, W. Richards

Proceedings Volume 4701, (2002) https://doi.org/10.1117/12.474704

KEYWORDS: Sensors, Composites, Fiber optics sensors, Temperature metrology, Thermography, Lamps, X-rays, Infrared cameras, Nondestructive evaluation, Fiber optics

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Proceedings Article | 11 July 2002 Paper

Compression of PZT-5H piezoelectric ceramic at constant electric field: investigation of energy absorption mechanism

Pavel Chaplya, Gregory Carman

Proceedings Volume 4699, (2002) https://doi.org/10.1117/12.474967

KEYWORDS: Ceramics, Absorption, Switching, Polarization, Composites, Motion models, Toxic industrial chemicals, Neodymium, Physics, Data modeling

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Proceedings Article | 11 July 2002 Paper

Influence of target temperature on sputter deposited Ti-Ni-Cu and Ti-Ni-Pd shape memory alloys

Kotekar Mohanchandra, Ken Ho, Gregory Carman

Proceedings Volume 4699, (2002) https://doi.org/10.1117/12.474978

KEYWORDS: Crystals, Temperature metrology, Sputter deposition, Shape memory alloys, Transmission electron microscopy, Thin films, X-ray diffraction, Copper, Crystallography, Annealing

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Proceedings Article | 11 July 2002 Paper

Dynamic magnetomechanical behavior of Terfenol-D/epoxy 1-3 composite

Siu Or, Nersesse Nersessian, Gregory Carman

Proceedings Volume 4699, (2002) https://doi.org/10.1117/12.475001

KEYWORDS: Composites, Magnetism, Epoxies, Magnetostrictive materials, Amplifiers, Polymers, Power supplies, Transducers, Ultrasonics, Signal analyzers

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Proceedings Article | 11 July 2002 Paper

Manufacturing and testing of [1-3] nickel/polymer composites

Nersesse Nersessian, Siu Or, Gregory Carman, Harry Radousky

Proceedings Volume 4699, (2002) https://doi.org/10.1117/12.475000

KEYWORDS: Composites, Nickel, Magnetism, Particles, Manufacturing, Epoxies, Anisotropy, Crystals, Magnetostrictive materials, Spherical lenses

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Proceedings Article | 9 July 2002 Paper

Recent advances in magnetostrictive particulate composite technology

Wade Pulliam, Geoffrey McKnight, Gregory Carman

Proceedings Volume 4698, (2002) https://doi.org/10.1117/12.475074

KEYWORDS: Composites, Particles, Magnetism, Magnetostrictive materials, Amplifiers, Absorption, Crystals, Polymers, Manufacturing, Transducers

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Proceedings Article | 16 August 2001 Paper

Power spectral density (PSD) technique in damage detection

Sauro Liberatore, Gregory Carman, Jason Speyer

Proceedings Volume 4327, (2001) https://doi.org/10.1117/12.436533

KEYWORDS: Sensors, Actuators, Mathematical modeling, Data modeling, Motion models, Damage detection, Aluminum, Matrices, Analytical research, Interfaces

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Proceedings Article | 16 August 2001 Paper

Experimental evaluation of embedded EFPI optical fiber sensors for structural health monitoring

Donggun Lee, Milan Mitrovic, Anna Stewart, W. Richards, Gregory Carman

Proceedings Volume 4327, (2001) https://doi.org/10.1117/12.436582

KEYWORDS: Sensors, Fiber optics sensors, Composites, Fiber optics, Optical fibers, Aerospace engineering, Epoxies, Adhesives, Photography, Fabry–Perot interferometers

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Proceedings Article | 11 July 2001 Paper

Large magnetostriction in Terfenol-D particulate composites with preferred [112] orientation

Geoffrey McKnight, Gregory Carman

Proceedings Volume 4333, (2001) https://doi.org/10.1117/12.432754

KEYWORDS: Composites, Particles, Magnetostrictive materials, Optical proximity correction, Crystals, Magnetism, Polymers, Anisotropy, Data modeling, Crystallography

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Proceedings Article | 11 July 2001 Paper

Influence of target temperature on crystallization and properties of NiTi thin film shape memory alloy

Kotekar Mohanchandra, Ken Ho, Gregory Carman

Proceedings Volume 4333, (2001) https://doi.org/10.1117/12.432783

KEYWORDS: Sputter deposition, Crystals, Temperature metrology, Thin films, Titanium, X-ray diffraction, X-rays, Transmission electron microscopy, Atrial fibrillation, Shape memory alloys

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Proceedings Article | 11 July 2001 Paper

Magneto-thermo-mechanical characterization of magnetostrictive composites

Nersesse Nersessian, Gregory Carman

Proceedings Volume 4333, (2001) https://doi.org/10.1117/12.432753

KEYWORDS: Magnetism, Composites, Epoxies, Transducers, Magnetostrictive materials, Manufacturing, Particles, Actuators, Magnetic sensors, Sensors

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Proceedings Article | 11 July 2001 Paper

Investigation of energy absorption capabilities of piezoelectric ceramic

Pavel Chaplya, Gregory Carman

Proceedings Volume 4333, (2001) https://doi.org/10.1117/12.432759

KEYWORDS: Ceramics, Absorption, Temperature metrology, Polarization, Signal attenuation, Phase measurement, Aluminum, Magnetostrictive materials, Chemical elements, Manufacturing

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Proceedings Article | 22 June 2000 Paper

Design and testing of a mesoscale actuator device (MAD)

Joon Park, Milan Mitrovic, Gregory Carman, H. Thomas Hahn

Proceedings Volume 3985, (2000) https://doi.org/10.1117/12.388880

KEYWORDS: Temperature metrology, Dielectrics, Actuators, Coating, Aluminum, Ferroelectric materials, Amplifiers, Convection, Manufacturing, Chlorine

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Proceedings Article | 14 June 2000 Paper

Nonlinear behavior of polycrystalline piezoceramics

Yevgeniy Fotinich, Gregory Carman

Proceedings Volume 3992, (2000) https://doi.org/10.1117/12.388216

KEYWORDS: Switching, Polarization, Data modeling, Dielectric polarization, Crystals, Dielectrics, Protactinium, Finite element methods, Switches, Actuators

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Proceedings Article | 14 June 2000 Paper

Energy absorption in axial and shear loading of particulate magnetostrictive composites

Geoffrey McKnight, Gregory Carman

Proceedings Volume 3992, (2000) https://doi.org/10.1117/12.388240

KEYWORDS: Magnetism, Absorption, Composites, Particles, Magnetostrictive materials, Polymers, Anisotropy, Actuators, Sensors, Crystals

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Proceedings Article | 14 June 2000 Paper

Durability properties of piezoelectric stack actuators under combined electromechanical loading

Milan Mitrovic, Gregory Carman, Friedrich Straub

Proceedings Volume 3992, (2000) https://doi.org/10.1117/12.388206

KEYWORDS: Actuators, Temperature metrology, Ferroelectric materials, Information operations, Manufacturing, Ceramics, Amplifiers, Dielectrics, Capacitance, Chlorine

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Proceedings Article | 12 July 1999 Paper

Sputter deposition of NiTi thin film exhibiting the SME at room temperatures

Ken Ho, Gregory Carman, Peter Jardine

Proceedings Volume 3675, (1999) https://doi.org/10.1117/12.352803

KEYWORDS: Sputter deposition, Titanium, Thin films, Actuators, Microelectromechanical systems, Control systems, Thin film deposition, Heat treatments, Shape memory alloys, Crystals

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Proceedings Article | 12 July 1999 Paper

Composite Terfenol-D sonar transducers

James Goldie, Michael Gerver, John Oleksy, Gregory Carman, Terrisa Duenas

Proceedings Volume 3675, (1999) https://doi.org/10.1117/12.352797

KEYWORDS: Composites, Transducers, Head, Magnetism, Particles, Epoxies, Resistance, Acoustics, Skin, Optical spheres

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Proceedings Article | 12 July 1999 Paper

Thermomechanical characterization of shape memory alloy torque tubes

Andrew Keefe, Gregory Carman

Proceedings Volume 3675, (1999) https://doi.org/10.1117/12.352811

KEYWORDS: Shape memory alloys, Actuators, Temperature metrology, Statistical modeling, Solids, Control systems, Data modeling, Aerospace engineering, Solid state physics, Magnetostrictive materials

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Proceedings Article | 9 June 1999 Paper

Experimentally validated thermal model of thin film NiTi

Jenna Favelukis, Adrienne Lavine, Gregory Carman

Proceedings Volume 3668, (1999) https://doi.org/10.1117/12.350737

KEYWORDS: Thin films, Actuators, Convection, Temperature metrology, Thermal modeling, Spherical lenses, Shape memory alloys, Titanium, Tellurium, Nickel

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Proceedings Article | 9 June 1999 Paper

Electromechanical characterization of piezoelectric stack actuators

Milan Mitrovic, Gregory Carman, Friedrich Straub

Proceedings Volume 3668, (1999) https://doi.org/10.1117/12.350689

KEYWORDS: Actuators, Manufacturing, Ferroelectric materials, Amplifiers, Electroluminescence, Chlorine, Nomenclature, Control systems, Piezoelectric effects, Ceramics

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Proceedings Article | 4 June 1999 Paper

Advanced magnetostrictive finite element method (FEM) modeling development

G. Weisensel, Rick Zrostlik, Gregory Carman

Proceedings Volume 3667, (1999) https://doi.org/10.1117/12.350066

KEYWORDS: Magnetostrictive materials, Magnetism, Transducers, Finite element methods, Systems modeling, Instrument modeling, Performance modeling, Reliability, Projection systems, Ferromagnetics

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Designers need advanced tools to tap the full potential of the benefits of giant magnetostrictive materials (GMMs) for advanced commercial, space, and military applications. To overcome the deficiencies in present models, a new magnetostrictive analytical formulation needs to be developed that includes the nonlinearities experienced in advanced device designs. Presented herein are a strategy and approach for developing the needed advanced tools to move magnetostrictive transducer design to much higher levels of performance and effectiveness. Advanced GMM FEM modeling capabilities are being developed by extending and combining leading edge theoretical work in nonlinear constitutive equations and ferromagnetic hysteresis. A nonlinear constitutive model for a GMMs uses a Taylor series expansion of independent variables of stress, magnetization and temperature to obtain a polynomial relation in terms of the Gibbs free energy. Phenomenological justification is used to eliminate some terms. Development of a magnetization based magnetostrictive material model at the macroscopic continuum level will be a novel advancement of the state of the art. The planned hysteresis model is derived from related work on energy-based models which considers the total magnetization as the combination of a reversible and an irreversible component. Because both the constitutive and hysteresis formulations are in terms of the same state variables, integration into a new complete magnetostrictive material description is inherently more feasible. The result will be a validated, fully coupled, 3-dimensional, nonlinear, hysteretic, dynamic thermo-electro- magneto-acousto-mechanical (TEMAM) model of magnetostrictive materials. Development of new finite elements to take advantage of the advanced modeling results is planned. The new capability will provide meaningful performance predictions, parameter sensitivity studies, trade-off studies and design optimizations, thereby enabling next-generation applications at reduced developmental cost.

Proceedings Article | 27 July 1998 Paper

Combined electrical and mechanical fatigue of piezoelectric ceramics undergoing polarization switching for large displacement actuation

Donny Wang, Gregory Carman

Proceedings Volume 3329, (1998) https://doi.org/10.1117/12.316894

KEYWORDS: Polarization, Switching, Ceramics, Electrodes, Actuators, Ferroelectric materials, Microelectromechanical systems, Temperature metrology, Scanning electron microscopy, Surface finishing

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Proceedings Article | 27 July 1998 Paper

Frequency response of an inchworm motor fabricated with micromachined interlocking surface mesoscale actuator device (MAD)

Quanfang Chen, Da-Jeng Yao, Chang-Jin Kim, Gregory Carman

Proceedings Volume 3329, (1998) https://doi.org/10.1117/12.316946

KEYWORDS: Actuators, Prototyping, Bridges, Crystals, Silicon, Semiconducting wafers, Ferroelectric materials, Control systems, Molecular bridges, Microfabrication

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Proceedings Article | 24 July 1998 Paper

Modeling of polarization switching in piezoceramics

Yevgeniy Fotinich, Gregory Carman

Proceedings Volume 3323, (1998) https://doi.org/10.1117/12.316290

KEYWORDS: Switching, Polarization, Data modeling, Moire patterns, Crystals, Motion models, Actuators, Dielectric polarization, Interferometers, Physics

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Proceedings Article | 20 July 1998 Paper

Torsional behavior of shape memory alloys

Andrew Keefe, Gregory Carman, A. Peter Jardine

Proceedings Volume 3324, (1998) https://doi.org/10.1117/12.316849

KEYWORDS: Shape memory alloys, Actuators, Solids, Bohrium, Systems modeling, Analytical research, Temperature metrology, Data compression, Copper, Phase measurement

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Proceedings Article | 20 July 1998 Paper

Relation of the cracking phenomena in piezoelectrics to domain wall motion

Pavel Chaplya, Gregory Carman

Proceedings Volume 3324, (1998) https://doi.org/10.1117/12.316858

KEYWORDS: Switching, Polarization, Electrodes, Finite element methods, Actuators, Chemical elements, Information operations, Mechanics, Dielectrics, Aerospace engineering

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Proceedings Article | 14 February 1997 Paper

Modeling and measuring the response times of thin film TiNi

Ken Ho, Peter Jardine, Gregory Carman, Chang-Jin Kim

Proceedings Volume 3040, (1997) https://doi.org/10.1117/12.267109

KEYWORDS: Thin films, Convection, Data modeling, Actuators, Temperature metrology, Silicon films, Performance modeling, Silicon, Analytical research, Microelectromechanical systems

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Proceedings Article | 14 February 1997 Paper

Moire interferometer applied to a piezoceramic containing a simulated void

Sung Park, Gregory Carman, S. Park

Proceedings Volume 3040, (1997) https://doi.org/10.1117/12.267105

KEYWORDS: Switching, Moire patterns, Epoxies, Ceramics, Polarization, Interferometers, Actuators, Materials processing, Coating, CCD cameras

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Proceedings Article | 31 May 1996 Paper

Linear and nonlinear behavior of piezoelectric materials

S. Park, Sung Park, Gregory Carman

Proceedings Volume 2715, (1996) https://doi.org/10.1117/12.240848

KEYWORDS: Switching, Fringe analysis, Polarization, Ceramics, Moire patterns, Interferometers, Dielectrics, Analytical research, Electrodes, Aluminum

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Proceedings Article | 26 April 1996 Paper

Magnetic-field requirements for an active-control flap on a rotorcraft

Gregory Carman, Milan Mitrovic

Proceedings Volume 2779, (1996) https://doi.org/10.1117/12.237043

KEYWORDS: Magnetism, Magnetostrictive materials, Actuators, Control systems, Systems modeling, Calcium, Shape memory alloys, Thermodynamics, Mathematical modeling, Temperature metrology

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Proceedings Article | 22 May 1995 Paper

Nonlinear behavior of coupled magnetostrictive material systems analytical/experimental

Mark Roberts, Milan Mitrovic, Gregory Carman

Proceedings Volume 2441, (1995) https://doi.org/10.1117/12.209802

KEYWORDS: Magnetism, Magnetostrictive materials, Composites, Manufacturing, Complex systems, Epoxies, Temperature metrology, Finite element methods, Actuators, Partial differential equations

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Proceedings Article | 8 May 1995 Paper

Analytically/experimentally evaluating the response of cylindrical piezoelectric material systems subjected to thermal loads

Mike Stam, Donny Wang, Gregory Carman

Proceedings Volume 2443, (1995) https://doi.org/10.1117/12.208280

KEYWORDS: Cryogenics, Temperature metrology, Ceramics, Thermal modeling, Epoxies, Silver, Ferroelectric materials, Systems modeling, Manufacturing, Control systems

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Proceedings Article | 13 September 1994 Paper

Characterization of actuator based materials using optical fiber sensors

David Sun, Mary Burford, Kent Murphy, Richard Claus, Jonathan Greene, Tuan Tran, Gregory Carman

Proceedings Volume 2361, (1994) https://doi.org/10.1117/12.184804

KEYWORDS: Actuators, Ferroelectric materials, Sensors, Fiber optics sensors, Composites, Optical fibers, Measurement devices, Lead, Fabry–Perot interferometers, Optical components

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Proceedings Article | 6 May 1994 Paper

Modeling of laminated plates containing elastic nonlinear actuators

Gregory Carman, Belinda Reichik

Proceedings Volume 2190, (1994) https://doi.org/10.1117/12.175177

KEYWORDS: Actuators, Systems modeling, Complex systems, Magnetostrictive materials, Instrument modeling, Composites, Shape memory alloys, Chemical elements, Magnetism, Ferroelectric materials

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Proceedings Article | 1 May 1994 Paper

Processing monitoring of carbon/phenolic composites using smart sensors

Sung Chiou, P. Kukuchek, D. Echternach, Gregory Carman, L. Lai

Proceedings Volume 2191, (1994) https://doi.org/10.1117/12.173964

KEYWORDS: Sensors, Composites, Dielectrics, Ultrasonics, Process control, Signal attenuation, Signal processing, Smart sensors, Temperature metrology, Control systems

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Proceedings Article | 1 May 1994 Paper

Delamination detection in composites using optical fiber techniques

Kent Murphy, C. Schmid, Tuan Tran, Gregory Carman, Anbo Wang, Richard Claus

Proceedings Volume 2191, (1994) https://doi.org/10.1117/12.173950

KEYWORDS: Sensors, Composites, Ultrasonics, Optical fibers, Transducers, Fiber optics sensors, Acoustics, Fabry–Perot interferometers, Signal detection, Multimode fibers

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Proceedings Article | 1 May 1994 Paper

Health monitoring techniques for composite materials employing thermal parameters and fiber optic sensors

Gregory Carman, Milan Mitrovic

Proceedings Volume 2191, (1994) https://doi.org/10.1117/12.173952

KEYWORDS: Composites, Sensors, Fiber optics sensors, Polymers, Resistance, Multimode fibers, Reflection, Ceramics, Thermal modeling, Single mode fibers

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Proceedings Article | 8 September 1993 Paper

Transverse strength of composites containing optical fibers

Gregory Carman, Clare Paul, George Sendeckyj

Proceedings Volume 1917, (1993) https://doi.org/10.1117/12.152769

KEYWORDS: Optical fibers, Coating, Composites, Data modeling, Intelligence systems, Optics manufacturing, Smart structures, Control systems, Manufacturing, Sensors

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Proceedings Article | 12 July 1993 Paper

Detection of the onset of damage using an extrinsic Fabry-Perot interferometric strain sensor (EFPI-SS)

Clare Paul, George Sendeckyj, Gregory Carman

Proceedings Volume 1918, (1993) https://doi.org/10.1117/12.147973

KEYWORDS: Sensors, Silica, Glasses, Epoxies, Composites, Lead, Fusion splicing, Optical fibers, Data acquisition, X-rays

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Proceedings Article | 26 March 1993 Paper

Validation of axial strain transfer from a composite laminate to embedded optical fiber sensors

Mark Miller, Scott Case, Gregory Carman, C. Schmid, Russell May, Richard Claus

Proceedings Volume 1798, (1993) https://doi.org/10.1117/12.141325

KEYWORDS: Sensors, Fiber optics sensors, Composites, Optical fibers, Resistance, Fiber optics, Epoxies, Glasses, Structured optical fibers, Systems modeling

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Proceedings Article | 26 March 1993 Paper

Implementation and evaluation of an embedded extrinsic Fabry-Perot fiber optic strain rosette sensor

Gregory Carman, Scott Case, John Lesko, Brian Fogg

Proceedings Volume 1798, (1993) https://doi.org/10.1117/12.141319

KEYWORDS: Silicon, Composites, Information operations, Structured optical fibers, Fiber optics, Optical fibers, Sensors, Fabry–Perot interferometers, Skin, Fiber optics sensors

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SPIE Journal Paper | 1 January 1992

Embedded Fabry-Perot fiber optic strain sensors in the macromodel composites

John Lesko, Gregory Carman, Brian Fogg, William Miller, Ashish Vengsarkar, Kenneth Reifsnider, Richard Claus

OE, Vol. 31, Issue 01, (January 1992) https://doi.org/10.1117/12.10.1117/12.56055

KEYWORDS: Composites, Sensors, Fiber optics sensors, Systems modeling, Fiber optics, Resistance, Data modeling, Fabry–Perot interferometers, Interfaces, Mechanics

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Proceedings Article | 1 December 1991 Paper

Analysis of macro-model composites with Fabry-Perot fiber-optic sensors

Brian Fogg, William Miller, John Lesko, Gregory Carman, Ashish Vengsarkar, Kenneth Reifsnider, Richard Claus

Proceedings Volume 1588, (1991) https://doi.org/10.1117/12.50161

KEYWORDS: Composites, Sensors, Fiber optics sensors, Systems modeling, Fiber optics, Data modeling, Structured optical fibers, Smart structures, Fabry–Perot interferometers, Skin

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Showing 5 of 89 publications

Conference Committee Involvement (46)

Active and Passive Smart Structures and Integrated Systems XIX

17 March 2025 | Vancouver, B.C., Canada

Multifunctional Materials and Structures

17 March 2025 | Vancouver, B.C., Canada

Behavior and Mechanics of Multifunctional Materials XVIII

27 March 2024 | Long Beach, California, United States

Active and Passive Smart Structures and Integrated Systems XVIII

25 March 2024 | Long Beach, California, United States

Active and Passive Smart Structures and Integrated Systems XVII

13 March 2023 | Long Beach, California, United States

Behavior and Mechanics of Multifunctional Materials XVII

13 March 2023 | Long Beach, California, United States

Active and Passive Smart Structures and Integrated Systems XVI

7 March 2022 | Long Beach, California, United States

Behavior and Mechanics of Multifunctional Materials XVI

7 March 2022 | Long Beach, California, United States

Behavior and Mechanics of Multifunctional Materials XV

22 March 2021 | Online Only, California, United States

Active and Passive Smart Structures and Integrated Systems XV

8 March 2021 | Online Only, California, United States

Behavior and Mechanics of Multifunctional Materials XIV

27 April 2020 | Online Only, California, United States

Active and Passive Smart Structures and Integrated Systems XIV

27 April 2020 | Online Only, California, United States

Active and Passive Smart Structures and Integrated Systems XIII

4 March 2019 | Denver, Colorado, United States

Behavior and Mechanics of Multifunctional Materials XIII

4 March 2019 | Denver, Colorado, United States

Active and Passive Smart Structures and Integrated Systems XII

5 March 2018 | Denver, Colorado, United States

Behavior and Mechanics of Multifunctional Materials and Composites XII

5 March 2018 | Denver, Colorado, United States

Active and Passive Smart Structures and Integrated Systems XI

26 March 2017 | Portland, Oregon, United States

Behavior and Mechanics of Multifunctional Materials and Composites XI

26 March 2017 | Portland, Oregon, United States

Active and Passive Smart Structures and Integrated Systems X

21 March 2016 | Las Vegas, Nevada, United States

Behavior and Mechanics of Multifunctional Materials and Composites X

21 March 2016 | Las Vegas, Nevada, United States

Active and Passive Smart Structures and Integrated Systems IX

9 March 2015 | San Diego, California, United States

Behavior and Mechanics of Multifunctional Materials and Composites IX

9 March 2015 | San Diego, California, United States

Active and Passive Smart Structures and Integrated Systems VIII

10 March 2014 | San Diego, California, United States

Behavior and Mechanics of Multifunctional Materials and Composites VIII

10 March 2014 | San Diego, California, United States

Active and Passive Smart Structures and Integrated Systems VII

10 March 2013 | San Diego, California, United States

Behavior and Mechanics of Multifunctional Materials and Composites VII

10 March 2013 | San Diego, California, United States

Behavior and Mechanics of Multifunctional Materials and Composites VI

12 March 2012 | San Diego, California, United States

Active and Passive Smart Structures and Integrated Systems VI

12 March 2012 | San Diego, California, United States

Active and Passive Smart Structures and Integrated Systems V

7 March 2011 | San Diego, California, United States

Behavior and Mechanics of Multifunctional Materials and Composites V

7 March 2011 | San Diego, California, United States

Behavior and Mechanics of Multifunctional Materials and Composites IV

8 March 2010 | San Diego, California, United States

Active and Passive Smart Structures and Integrated Systems IV

8 March 2010 | San Diego, California, United States

Behavior and Mechanics of Multifunctional Materials and Composites III

9 March 2009 | San Diego, California, United States

Active and Passive Smart Structures and Integrated Systems III

9 March 2009 | San Diego, California, United States

Active and Passive Smart Structures and Integrated Systems II

10 March 2008 | San Diego, California, United States

Behavior and Mechanics of Multifunctional and Composite Materials II

10 March 2008 | San Diego, California, United States

Active and Passive Smart Structures and Integrated Systems

19 March 2007 | San Diego, California, United States

Behavior and Mechanics of Multifunctional and Composite Materials

19 March 2007 | San Diego, California, United States

Smart Structures and Integrated Systems

27 February 2006 | San Diego, California, United States

Active Materials: Behavior and Mechanics

27 February 2006 | San Diego, California, United States

Smart Structures and Integrated Systems

7 March 2005 | San Diego, California, United States

Active Materials: Behavior and Mechanics

7 March 2005 | San Diego, California, United States

Active Materials: Behavior and Mechanics

15 March 2004 | San Diego, CA, United States

Smart Structures and Integrated Systems

15 March 2004 | San Diego, CA, United States

Active Materials: Behavior and Mechanics

3 March 2003 | San Diego, California, United States

Smart Structures and Integrated Systems

3 March 2003 | San Diego, California, United States

Showing 5 of 46 Conference Committees

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