Prof. Daniel J. Inman Profile

Prof. Daniel J. Inman

Professor at Univ of Michigan

SPIE Involvement:

Conference Program Committee | Author

Publications (122)

Proceedings Article | 9 May 2024 Presentation + Paper

Bio-inspired, 3D printed feather transducers for in flight aerodynamic force and vibration sensing

Ruowen Tu, Rémy Delplanche, Lawren Gamble, Daniel Inman, Bret Tobalske, Henry Sodano

Proceedings Volume 12944, 1294408 (2024) https://doi.org/10.1117/12.3010908

KEYWORDS: Transducers, 3D printing, Vibration, Aerodynamics, Biomimetics, Printing, Piezoresistivity, 3D surface sensing, Laser frequency, Micro unmanned aerial vehicles

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Proceedings Article | 9 May 2024 Presentation + Paper

Avian-inspired wing sweep

D. Inman, J. Perry, D. Willis

Proceedings Volume 12944, 1294406 (2024) https://doi.org/10.1117/12.3010181

KEYWORDS: Shape memory alloys, Unmanned aerial vehicles, Design, Aerodynamics, Smart materials, Metamaterials, Matrices, Engineering

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Proceedings Article | 27 April 2023 Presentation + Paper

Whiffling-inspired gapped wings alter trim and mitigate gusts

Piper Sigrest, Daniel Inman

Proceedings Volume 12481, 1248109 (2023) https://doi.org/10.1117/12.2658539

KEYWORDS: Aerodynamics, Interpolation, Simulations, Modeling, Nose, MATLAB, Curium, Unmanned aerial vehicles, Magnesium, Design and modelling

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Proceedings Article | 25 April 2023 Presentation + Paper

On the symmetric damage detection with flexural waves using circular piezoelectric transducers

Kayc Lopes, Camila Gonsalez-Bueno, Daniel Inman, Douglas Bueno

Proceedings Volume 12488, 124880H (2023) https://doi.org/10.1117/12.2657300

KEYWORDS: Structural health monitoring, Wave propagation, Damage detection

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Proceedings Article | 18 April 2023 Open Access

Nature, smart structures, and morphing UAVs

Daniel Inman, Kevin P. T. Haughn, Christina Harvey

Proceedings Volume 12486, 1248602 (2023) https://doi.org/10.1117/12.2666179

KEYWORDS: Unmanned aerial vehicles, Machine learning, Smart structures, Smart materials, Design and modelling, Wind measurement, Switches, Sensors, Aerospace engineering, Aerodynamics

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Proceedings Article | 19 April 2022 Presentation + Paper

On the frequencies for structural health monitoring in plates with asymmetrical damage: an analytical approach

Kayc W. Lopes, Camila G. Gonsalez-Bueno, Daniel Inman, Douglas D. Bueno

Proceedings Volume 12048, 120480B (2022) https://doi.org/10.1117/12.2612224

KEYWORDS: Structural health monitoring, Wave propagation, Damage detection, Analytical research

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Proceedings Article | 21 March 2019 Presentation + Paper

Extension of cross-well bandwidths for a bistable oscillator

Andrew Lee, Daniel Inman

Proceedings Volume 10967, 109670H (2019) https://doi.org/10.1117/12.2514104

KEYWORDS: Oscillators, Actuators, Energy harvesting, Composites, Bistability, Nonlinear dynamics

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Proceedings Article | 27 March 2018 Presentation + Paper

Bioinspired pitch control using a piezoelectric horizontal tail for rudderless UAVs

Lawren Gamble, Daniel Inman

Proceedings Volume 10593, 1059303 (2018) https://doi.org/10.1117/12.2287471

KEYWORDS: Actuators, Aerodynamics, Unmanned aerial vehicles, Smart materials, Wind measurement, Composites, Piezoelectric thin film actuators

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Proceedings Article | 11 May 2017 Presentation

Impedance-based structural health monitoring (Conference Presentation)

Gyuhae Park, Daniel Inman

Proceedings Volume 10172, 1017209 (2017) https://doi.org/10.1117/12.2261351

KEYWORDS: Structural health monitoring, Transducers, Aerospace engineering, Sensors, Diagnostics, Biomedical optics, Current controlled current source

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Proceedings Article | 10 May 2017 Presentation

Longitudinal metastructure bar with an active vibration absorber (Conference Presentation)

Katherine Reichl, Daniel Inman

Proceedings Volume 10164, 101640Z (2017) https://doi.org/10.1117/12.2258742

KEYWORDS: Aerospace engineering, Control systems, Composites, Smart structures, System integration, Current controlled current source

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Proceedings Article | 17 April 2017 Paper

A parametric study on a bio-inspired continuously morphing trailing edge

Amin Moosavian, Eun Jung Chae, Alexander Pankonien, Andrew Lee, Daniel Inman

Proceedings Volume 10162, 1016204 (2017) https://doi.org/10.1117/12.2257582

KEYWORDS: Distance measurement, Aerodynamics, Computational fluid dynamics, Composites, 3D modeling, Aerospace engineering, Aircraft structures

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Proceedings Article | 12 April 2017 Paper

Macro-fiber composites under thermal cycles for space applications

Krystal Acosta, Jared Hobeck, Robert Owen, Daniel Inman

Proceedings Volume 10168, 101683E (2017) https://doi.org/10.1117/12.2259804

KEYWORDS: Composites, Structural health monitoring, Environmental sensing, Microcontrollers, Amplifiers, Electronics, Sensing systems, Piezoelectric thin film actuators, Satellites, Thermal effects, Magnetism, Computer programming, Epoxies, Relays, Electrodes

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Proceedings Article | 11 April 2017 Presentation + Paper

Piezoelectrically strained bistable laminates with macro fiber composites

Andrew Lee, Amin Moosavian, Daniel Inman

Proceedings Volume 10164, 101640C (2017) https://doi.org/10.1117/12.2257680

KEYWORDS: Composites, Bistability, Anisotropy, Finite element methods, Adhesives, Actuators, Epoxies, Electrodes, Shape analysis, Modeling

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Proceedings Article | 10 April 2017 Paper

Simultaneous passive broadband vibration suppression and energy harvesting with multifunctional metastructures

Jared Hobeck, Daniel Inman

Proceedings Volume 10172, 101720K (2017) https://doi.org/10.1117/12.2260093

KEYWORDS: Energy harvesting, Resonators, Distributed computing, Electromechanical design, Systems modeling, Smart materials, Structural design, Optimization (mathematics), Oscillators, Control systems design, Prototyping

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Proceedings Article | 2 April 2015 Paper

Magnetoelastic metastructures for passive broadband vibration suppression

Jared Hobeck, Daniel Inman

Proceedings Volume 9431, 943119 (2015) https://doi.org/10.1117/12.2083887

KEYWORDS: Complex systems, Oscillators, Systems modeling, Beam shaping, Mathematical modeling, Prototyping, Analytical research, Distributed computing, Structural design, Modal analysis

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Proceedings Article | 2 April 2015 Paper

Magnetoelastic energy harvester for structural health monitoring applications

Brittany Essink, Jared Hobeck, Robert Owen, Daniel Inman

Proceedings Volume 9431, 943123 (2015) https://doi.org/10.1117/12.2084580

KEYWORDS: Complex systems, Magnetism, Energy harvesting, Resistance, Electrodes, Aluminum, Data modeling, Beam shaping, Systems modeling, Optimization (mathematics)

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Proceedings Article | 2 April 2015 Paper

Spanwise morphing trailing edge on a finite wing

Alexander Pankonien, Daniel Inman

Proceedings Volume 9431, 94310T (2015) https://doi.org/10.1117/12.2083945

KEYWORDS: Aerodynamics, Sensors, Unmanned aerial vehicles, Curium, Modeling, Actuators, Chlorine, Microsoft Foundation Class Library, Skin, Transducers

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Proceedings Article | 10 April 2014 Paper

The dual cantilever flutter phenomenon: a novel energy harvesting method

Jared Hobeck, Damien Geslain, Daniel Inman

Proceedings Volume 9061, 906113 (2014) https://doi.org/10.1117/12.2061051

KEYWORDS: Energy harvesting, Fluid dynamics, Interfaces, Sensors, 3D modeling, Amplifiers, Computer simulations, Aerospace engineering, Acoustics, Ferroelectric materials

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Proceedings Article | 1 April 2014 Paper

Aeroelastic performance evaluation of a flexure box morphing airfoil concept

Alexander Pankonien, Daniel Inman

Proceedings Volume 9057, 905716 (2014) https://doi.org/10.1117/12.2046406

KEYWORDS: Sensors, Microsoft Foundation Class Library, Aerodynamics, Actuators, Calibration, Chlorine, Amplifiers, Curium, Unmanned aerial vehicles, Sensor calibration

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Proceedings Article | 1 April 2014 Paper

Investigation of geometries of bistable piezoelectric-laminate plates for vibration-based energy harvesting

David Betts, Christopher Bowen, Daniel Inman, Paul Weaver, H. Kim

Proceedings Volume 9057, 90571E (2014) https://doi.org/10.1117/12.2044771

KEYWORDS: Bismuth, Microsoft Foundation Class Library, Modeling, Energy harvesting, Digital image correlation, Resistance, Bistability, Manufacturing, Shape analysis, Cameras

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Proceedings Article | 10 March 2014 Paper

Macro-fiber composites performance under thermal cycling for impedance-based SHM applications

Cassio Faria, Robert Owen, Daniel Inman

Proceedings Volume 9057, 905726 (2014) https://doi.org/10.1117/12.2046465

KEYWORDS: Structural health monitoring, Microsoft Foundation Class Library, Damage detection, Composites, Thermal effects, Temperature metrology, Detection and tracking algorithms, Nondestructive evaluation, Ferroelectric materials, Epoxies

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Proceedings Article | 29 May 2013 Paper

Adaptive multifunctional composites

Ya Wang, Daniel Inman

Proceedings Volume 8725, 87250B (2013) https://doi.org/10.1117/12.2018732

KEYWORDS: Composites, Data modeling, Actuators, Control systems, Systems modeling, Sensors, Oxides, Ceramics, Polymers, Finite element methods

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Proceedings Article | 10 April 2013 Paper

Electromechanical and statistical modeling of turbulence-induced vibration for energy harvesting

Jared Hobeck, Daniel Inman

Proceedings Volume 8688, 86881P (2013) https://doi.org/10.1117/12.2009794

KEYWORDS: Energy harvesting, Resistance, Statistical analysis, Composites, Statistical modeling, Turbulence, Resistors, Systems modeling, Fluid dynamics, Beam shaping

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Proceedings Article | 10 April 2013 Paper

Investigation of bistable piezo-composite plates for broadband energy harvesting

David Betts, Christopher Bowen, H. Alicia Kim, Nicholas Gathercole, Christopher Clarke, Daniel Inman

Proceedings Volume 8688, 86881N (2013) https://doi.org/10.1117/12.2009101

KEYWORDS: Energy harvesting, Digital image correlation, Composites, Sensor networks, Electromagnetism, Microsoft Foundation Class Library, Bistability, Piezoelectric effects, Aerospace engineering, Electronic components

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Proceedings Article | 10 April 2013 Paper

Experimental testing of spanwise morphing trailing edge concept

Alexander Pankonien, Daniel Inman

Proceedings Volume 8688, 868815 (2013) https://doi.org/10.1117/12.2009400

KEYWORDS: Skin, Actuators, Aerodynamics, Silicon, 3D printing, Microsoft Foundation Class Library, Composites, Unmanned aerial vehicles, Sensors, Smart materials

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Proceedings Article | 10 April 2013 Paper

Modeling and control of a jellyfish-inspired AUV

Cassio Faria, Shashank Priya, Daniel Inman

Proceedings Volume 8688, 86880P (2013) https://doi.org/10.1117/12.2009743

KEYWORDS: Kinematics, Systems modeling, Mathematical modeling, Actuators, Biomimetics, Control systems, Device simulation, Navigation systems, Neodymium, Dynamical systems

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Proceedings Article | 3 April 2013 Paper

A finite element modeling of a multifunctional hybrid composite beam with viscoelastic materials

Ya Wang, Daniel Inman

Proceedings Volume 8689, 868919 (2013) https://doi.org/10.1117/12.2009824

KEYWORDS: Composites, Data modeling, Ceramics, Finite element methods, Shape memory alloys, Oxides, Actuators, Numerical simulations, Systems modeling, Epoxies

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Proceedings Article | 2 May 2012 Paper

Status in the development of self-powered wireless sensor node for structural health monitoring and prognosis

Valery Godinez-Azcuaga, Justin Farmer, Paul Ziehl, Victor Giurgiutiu, Antonio Nanni, Daniel Inman

Proceedings Volume 8347, 83471V (2012) https://doi.org/10.1117/12.917522

KEYWORDS: Sensors, Energy harvesting, Bridges, Corrosion, Structural health monitoring, Acoustic emission, Wind energy, Prototyping, Data modeling, Composites

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Proceedings Article | 13 April 2012 Paper

Time reversal DORT method applied to Lamb wave damage detection

Wenzhong Qu, D. Inman

Proceedings Volume 8409, 84091A (2012) https://doi.org/10.1117/12.923178

KEYWORDS: Wave propagation, Wave plates, Damage detection, Transducers, Chemical elements, Sensors, Structural health monitoring, Aluminum, Actuators, Ultrasonics

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Proceedings Article | 31 March 2012 Paper

Nonlinear dynamics of the bi-stable piezoelectric wind energy harvester

M. Amin Karami, J. Farmer, Daniel Inman

Proceedings Volume 8341, 83410C (2012) https://doi.org/10.1117/12.915722

KEYWORDS: Wind energy, Magnetism, Energy harvesting, Complex systems, Nonlinear dynamics, Teeth, Wind measurement, Prototyping, Beam shaping, Wind turbine technology

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Proceedings Article | 28 March 2012 Paper

Experimental characterization of simultaneous gust alleviation and energy harvesting for multifunctional wing spars

Ya Wang, Daniel Inman

Proceedings Volume 8341, 834114 (2012) https://doi.org/10.1117/12.926800

KEYWORDS: Point spread functions, Wind energy, Aluminum, Microsoft Foundation Class Library, Unmanned aerial vehicles, Composites, Transducers, Resistance, Control systems, Energy harvesting

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Proceedings Article | 28 March 2012 Paper

Optimization of piezoelectric bistable composite plates for broadband vibrational energy harvesting

David Betts, H. Alicia Kim, Christopher Bowen, Daniel Inman

Proceedings Volume 8341, 83412Q (2012) https://doi.org/10.1117/12.930138

KEYWORDS: Energy harvesting, Composites, Bistability, Complex systems, Piezoelectric effects, Magnetism, Systems modeling, Actuators, Optimization (mathematics), Mechanical engineering

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Proceedings Article | 28 April 2011 Paper

Damping characterization of viscoelastic composites using micromechanical approach

Mohammad Bonakdar, Gary Seidel, Daniel Inman

Proceedings Volume 7978, 797810 (2011) https://doi.org/10.1117/12.880481

KEYWORDS: Composites, Epoxies, Particles, Polymers, Spherical lenses, Glasses, Seaborgium, Silica, Superposition, Aerospace engineering

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Proceedings Article | 27 April 2011 Paper

Performance modeling of unmanned aerial vehicles with on-board energy harvesting

Steven Anton, Daniel Inman

Proceedings Volume 7977, 79771H (2011) https://doi.org/10.1117/12.880473

KEYWORDS: Energy harvesting, Unmanned aerial vehicles, Solar cells, Solar energy, Thin films, Composites, Sensors, Thin film devices, Systems modeling, Aerodynamics

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The concept of energy harvesting in unmanned aerial vehicles (UAVs) has received much attention in recent years. Solar powered flight of small aircraft dates back to the 1970s when the first fully solar flight of an unmanned aircraft took place. Currently, research has begun to investigate harvesting ambient vibration energy during the flight of UAVs. The authors have recently developed multifunctional piezoelectric self-charging structures in which piezoelectric devices are combined with thin-film lithium batteries and a substrate layer in order to simultaneously harvest energy, store energy, and carry structural load. When integrated into mass and volume critical applications, such as unmanned aircraft, multifunctional devices can provide great benefit over conventional harvesting systems. A critical aspect of integrating any energy harvesting system into a UAV, however, is the potential effect that the additional system has on the performance of the aircraft. Added mass and increased drag can significantly degrade the flight performance of an aircraft, therefore, it is important to ensure that the addition of an energy harvesting system does not adversely affect the efficiency of a host aircraft. In this work, a system level approach is taken to examine the effects of adding both solar and piezoelectric vibration harvesting to a UAV test platform. A formulation recently presented in the literature is applied to describe the changes to the flight endurance of a UAV based on the power available from added harvesters and the mass of the harvesters. Details of the derivation of the flight endurance model are reviewed and the formulation is applied to an EasyGlider remote control foam hobbyist airplane, which is selected as the test platform for this study. A theoretical study is performed in which the normalized change in flight endurance is calculated based on the addition of flexible thin-film solar panels to the upper surface of the wings, as well as the addition of flexible piezoelectric patches to the root of the wing spar. Experimental testing is also performed in which the wing spar of the EasyGlider aircraft is modified to include both Macro Fiber Composite and Piezoelectric Fiber Composite piezoelectric patches near the root of the wing and two thin-film solar panels are installed onto the upper wing surface to harvest vibration and solar energy during flight. Testing is performed in which the power output of the various harvesters is measured during flight. Results of the flight testing are used to update the model with accurate measures of the power available from the energy harvesting systems. Finally, the model is used to predict the potential benefits of adding multifunctional self-charging structures to the wing spar of the aircraft in order to harvest vibration energy during flight and provide a local power source for low-power sensors.

Proceedings Article | 27 April 2011 Paper

Energy-based comparison of various controllers for vibration suppression using piezoceramics

Ya Wang, Daniel Inman

Proceedings Volume 7977, 79771O (2011) https://doi.org/10.1117/12.880434

KEYWORDS: Control systems, Microsoft Foundation Class Library, Nonlinear control, Algorithm development, Switching, Switches, Numerical simulations, Solids, Transducers, Vibration control

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The large-scale and light-weight design trend in aircraft and spacecraft results in extremely flexible structures with lowfrequency vibration modes. Suppression of undesired vibrations in such flexible structures with limited energy is becoming an important design problem to develop energy-autonomous controllers powered using the harvested ambient energy. The objective of this paper is to compare different control laws to suppress low-frequency vibrations using the minimum actuation energy for the same system and under the same design constraint (identical settling time for free vibrations). The vibration suppression performance of four active control systems as well as their hybrid versions employing a switching technique are presented and compared. The control systems compared here are a Positive Position Feedback (PPF) controller, a Proportional Integral Derivative (PID) controller, a nonlinear controller (with a second-order nonlinear term multiplying the position and velocity feedback to create variable damping), a Linear Quadratic Regulator (LQR) controller and their hybrid versions integrating a bang-bang control law (on-off control) with each of these controllers. Experimental results are presented for a thin cantilevered beam with a piezoceramic transducer controlled by these eight controllers with a focus on the fundamental vibration mode under transverse free vibrations and the control energy requirements are compared. Experiments results reveal that all the controllers reduce the vibration settling time to 0.85s as a design constraint (which is 92.3% of the open-loop settling time: 10.9s). The average actuation power input provided to the piezoceramic transducer in each case is obtained for the time current and voltage measurements until the settling time. Comparisons show that the switching technology reduces significant actuation power requirement, so that all the hybrid control systems require much less power than their conventional versions. Especially, the hybrid bang-bang-nonlinear controller requires 67% less power than the conventional nonlinear controller. In order to verify this statement, the actuation current is theoretically calculated through piezo-capacitance using voltage measurements to check out the average power estimation. The theoretical checking out provides the same results with slightly error, which can be explained by measurement errors.

Proceedings Article | 27 April 2011 Paper

Adverse event detection (AED) system for continuously monitoring and evaluating structural health status

Jinsik Yun, Dong Sam Ha, Daniel Inman, Robert Owen

Proceedings Volume 7977, 79771R (2011) https://doi.org/10.1117/12.880503

KEYWORDS: Structural health monitoring, Sensors, Acoustics, Digital signal processing, Ferroelectric materials, Prototyping, Signal processing, Signal generators, Discrete wavelet transforms, Aluminum

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Proceedings Article | 26 April 2011 Paper

Linear and nonlinear energy harvesters for powering pacemakers from heart beat vibrations

M. Amin Karami, Daniel Inman

Proceedings Volume 7977, 797703 (2011) https://doi.org/10.1117/12.880168

KEYWORDS: Heart, Complex systems, Energy harvesting, Chest, Velocity measurements, Microelectromechanical systems, Magnetism, Intelligence systems, Surgery, Biomedical optics

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Proceedings Article | 20 April 2011 Paper

Recent advances in the development of a self-powered wireless sensor network for structural health prognosis

Valery Godinez-Azcuaga, Daniel Inman, Paul Ziehl, Victor Giurgiutiu, Antonio Nanni

Proceedings Volume 7983, 798325 (2011) https://doi.org/10.1117/12.880249

KEYWORDS: Sensors, Bridges, Corrosion, Wind energy, Acoustic emission, Prototyping, Data modeling, Signal detection, Sensor networks, Energy harvesting

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Proceedings Article | 20 April 2011 Paper

Piezoelectric power generation for civil infrastructure systems

A. Erturk, D. Inman

Proceedings Volume 7983, 798326 (2011) https://doi.org/10.1117/12.880463

KEYWORDS: Bridges, Wind energy, Energy harvesting, Copper indium disulfide, Electrodes, Electronic components, Sensors, Capacitance, Solar energy, Acoustic emission

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Proceedings Article | 30 March 2011 Paper

Carbon nanotube heterojunctions: unusual deformations and mechanical vibration properties

F. Scarpa, J. Narojczyk, K. Wojciechowski, D. Inman

Proceedings Volume 7980, 798006 (2011) https://doi.org/10.1117/12.881914

KEYWORDS: Carbon nanotubes, Heterojunctions, Oxygen, Nanosensors, Biosensors, Sensors, Current controlled current source, Oscillators, Mechanics

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Proceedings Article | 12 April 2010 Paper

Application of a negative capacitance circuit in synchronized switch damping techniques for vibration suppression

Hongli Ji, Jinhao Qiu, Jun Cheng, Daniel Inman

Proceedings Volume 7643, 76432V (2010) https://doi.org/10.1117/12.847078

KEYWORDS: Capacitance, Switching, Switches, Vibration control, Circuit switching, Chemical elements, Inductance, Chromium, Composites, Resistance

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Proceedings Article | 12 April 2010 Paper

Strength analysis of piezoceramic materials for structural considerations in energy harvesting for UAVs

S. Anton, A. Erturk, D. Inman

Proceedings Volume 7643, 76430E (2010) https://doi.org/10.1117/12.847798

KEYWORDS: Energy harvesting, Ceramics, Electrodes, Ferroelectric materials, Unmanned aerial vehicles, Crystals, Manufacturing, Wind energy, Thin films, Composites

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Proceedings Article | 9 April 2010 Paper

Nonlinear hybrid energy harvesting utilizing a Piezo-magneto-elastic spring

Mohammmad Karami, Daniel Inman

Proceedings Volume 7643, 76430U (2010) https://doi.org/10.1117/12.847566

KEYWORDS: Energy harvesting, Electromagnetism, Complex systems, Oscillators, Magnetism, Resistance, Intelligence systems, Systems modeling, Chemical elements, Electromagnetic coupling

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Proceedings Article | 9 April 2010 Paper

A self-powered wireless sensor node for structural health monitoring

Dao Zhou, Na Kong, Dong Sam Ha, Daniel Inman

Proceedings Volume 7650, 765010 (2010) https://doi.org/10.1117/12.847334

KEYWORDS: Structural health monitoring, Sensors, Ferroelectric materials, Energy harvesting, Microcontrollers, Phase measurement, Rectangular pulse, Wind energy, Analog electronics, Resistors

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Proceedings Article | 9 April 2010 Paper

Structural health monitoring of an impulsively loaded structure using wave-propagation based instantaneous baseline

Jacob Dodson, Jason Foley, Daniel Inman

Proceedings Volume 7650, 765038 (2010) https://doi.org/10.1117/12.847422

KEYWORDS: Damage detection, Sensors, Structural health monitoring, Time-frequency analysis, Wave propagation, Aluminum, Wavefronts, Passive remote sensing, Ferroelectric materials, Data acquisition

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Proceedings Article | 9 April 2010 Paper

Autonomous self-powered structural health monitoring system

Xinlin Qing, Steven Anton, David Zhang, Amrita Kumar, Daniel Inman, Teng Ooi

Proceedings Volume 7650, 765011 (2010) https://doi.org/10.1117/12.847171

KEYWORDS: Structural health monitoring, Solar cells, Sensors, Energy harvesting, Phase modulation, Diagnostics, Composites, Computing systems, Sensor networks, Amplifiers

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Proceedings Article | 9 April 2010 Paper

A low-power system design for Lamb wave methods

Shaver Deyerle, Dong Sam Ha, Daniel Inman

Proceedings Volume 7650, 765019 (2010) https://doi.org/10.1117/12.847677

KEYWORDS: Digital signal processing, Signal processing, Prototyping, Structural health monitoring, Ferroelectric materials, Aluminum, Discrete wavelet transforms, Analog electronics, Computing systems, Wavelets

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Proceedings Article | 17 April 2009 Paper

A comparative study of fatigue damage sensing in aluminum alloys using electrical impedance and laser ultrasonic methods

Lindsey Channels, Debejyo Chakraborty, Brad Butrym, Narayan Kovvali, James Spicer, Antonia Papandreou-Suppappola, Mana Afshari, Daniel Inman, Aditi Chattopadhyay

Proceedings Volume 7295, 72950Q (2009) https://doi.org/10.1117/12.815980

KEYWORDS: Ultrasonics, Aluminum, Signal attenuation, Time-frequency analysis, Stochastic processes, Chemical species, Associative arrays, Algorithm development, Transducers, Data acquisition

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Proceedings Article | 8 April 2009 Paper

A structural health monitoring system for self-repairing

Jeong Ki Kim, Dao Zhou, Dong Sam Ha, Daniel Inman

Proceedings Volume 7295, 729512 (2009) https://doi.org/10.1117/12.816398

KEYWORDS: Structural health monitoring, Shape memory alloys, Digital signal processing, Ferroelectric materials, Phase measurement, Actuators, Relays, Telecommunications, Computing systems, Defect detection

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Proceedings Article | 8 April 2009 Paper

Microsecond structural health monitoring in impact loaded structures

Jacob Dodson, Daniel Inman, Jason Foley

Proceedings Volume 7295, 72952F (2009) https://doi.org/10.1117/12.815391

KEYWORDS: Structural health monitoring, Damage detection, Algorithm development, Finite element methods, Aluminum, Modal analysis, Intelligence systems, Detection theory, Data modeling, Scientific research

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