Prof. Fuh-Gwo Yuan Profile

Prof. Fuh-Gwo Yuan

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Conference Program Committee | Author

Publications (37)

PROCEEDINGS ARTICLE | March 27, 2018

Damage detection and isolation via autocorrelation: a step toward passive sensing

Proc. SPIE. 10599, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XII

KEYWORDS: Signal to noise ratio, Aerospace engineering, Sensors, Inspection, Structural health monitoring, Damage detection, Aluminum, Passive remote sensing

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Passive sensing technique may eliminate the need of expending power from actuators and thus provide a means of developing a compact and simple structural health monitoring system. More importantly, it may provide a solution for monitoring the aircraft subjected to environmental loading from air flow during operation. In this paper, a non-contact auto-correlation based technique is exploited as a feasibility study for passive sensing application to detect damage and isolate the damage location. Its theoretical basis bears some resemblance to reconstructing Green’s function from diffusive wavefield through cross-correlation. Localized high pressure air from air compressor are randomly and continuously applied on the one side surface of the aluminum panels through the air blow gun. A laser Doppler vibrometer (LDV) was used to scan a 90 mm × 90 mm area to create a 6 × 6 2D-array signals from the opposite side of the panels. The scanned signals were auto-correlated to reconstruct a “selfimpulse response” (or Green’s function). The premise for stably reconstructing the accurate Green’s function requires long sensing times. For a 609.6 mm × 609.6 mm flat aluminum panel, the sensing times roughly at least four seconds is sufficient to establish converged Green’s function through correlation. For the integral stiffened aluminum panel, the geometrical features of the panel expedite the formation of the diffusive wavefield and thus shorten the sensing times. The damage is simulated by gluing a magnet onto the panels. Reconstructed Green’s functions (RGFs) are used for damage detection and damage isolation based on an imaging condition with mean square deviation of the RGFs from the pristine and the damaged structure and the results are shown in color maps. The auto-correlation based technique is shown to consistently detect the simulated damage, image and isolate the damage in the structure subjected to high pressure air excitation. This technique may be transformed into passive sensing applied on the aircraft during operation.

PROCEEDINGS ARTICLE | March 27, 2018

Standing surface acoustic wave technology applied for micro-particle concentration in oil

Proc. SPIE. 10599, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XII

KEYWORDS: Optical microscopes, Microfluidics, Electrodes, Particles, Ultrasonics, Wave propagation, Transducers, Acoustics, Motion analysis, Atmospheric particles

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PROCEEDINGS ARTICLE | March 27, 2018

Impact damage imaging in a curved composite panel with wavenumber index via Riesz transform

Proc. SPIE. 10599, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XII

KEYWORDS: Signal to noise ratio, Waveguides, Composites, Ultrasonics, Image quality, Wave propagation, Laser Doppler velocimetry, Damage detection, Signal analyzers

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PROCEEDINGS ARTICLE | May 11, 2017

A feasibility study of damage detection in beams using high-speed camera (Conference Presentation)

Proc. SPIE. 10169, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, and Civil Infrastructure 2017

KEYWORDS: Cameras, Sensors, Video, Remote sensing, Inspection, Digital cameras, Computer vision technology, High speed cameras, Damage detection, Spatial resolution

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PROCEEDINGS ARTICLE | May 11, 2017

Impact damage imaging in a honeycomb composite panel with IW via Riesz transform (Conference Presentation)

Proc. SPIE. 10169, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, and Civil Infrastructure 2017

KEYWORDS: Aerospace engineering, Q switching, Image processing, Composites, Wave plates, Wave propagation, Signal processing, Damage detection, Q switched lasers, Pulsed laser operation

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PROCEEDINGS ARTICLE | April 12, 2017

Damage imaging of an isotropic plate using matching pursuit algorithm

Proc. SPIE. 10168, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2017

KEYWORDS: Signal to noise ratio, Ferroelectric materials, Sensors, Dispersion, Wave plates, Wave propagation, Signal processing, Structural health monitoring, Sensing systems, Aluminum, Associative arrays, Piezoelectric effects

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PROCEEDINGS ARTICLE | April 12, 2017

Dispersion curve extraction of Lamb waves in metallic plates by matrix pencil method

Proc. SPIE. 10168, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2017

KEYWORDS: Waveguides, Doppler effect, Sensors, Dispersion, Fourier transforms, Wave plates, Wave propagation, Laser Doppler velocimetry, Aluminum, Phase velocity

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PROCEEDINGS ARTICLE | April 11, 2017

A low-frequency vibration energy harvester based on diamagnetic levitation

Proc. SPIE. 10164, Active and Passive Smart Structures and Integrated Systems 2017

KEYWORDS: Resistance, Magnetism, Energy harvesting, Numerical analysis, Vibrometry, Frequency modulation, Structural health monitoring, Fermium, Motion models, Double positive medium

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PROCEEDINGS ARTICLE | April 15, 2016

An efficient low frequency horizontal diamagnetic levitation mechanism based vibration energy harvester

Proc. SPIE. 9799, Active and Passive Smart Structures and Integrated Systems 2016

KEYWORDS: Energy efficiency, Copper, Complex systems, Resistance, Magnetism, Energy harvesting, Frequency modulation, Fermium, Electromagnetism, Double positive medium

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PROCEEDINGS ARTICLE | April 8, 2016

An enhanced CCRTM (E-CCRTM) damage imaging technique using a 2D areal scan for composite plates

Proc. SPIE. 9804, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, and Civil Infrastructure 2016

KEYWORDS: Actuators, Imaging systems, Composites, Reflectivity, Ultrasonics, Wave propagation, Laser Doppler velocimetry, Semiconducting wafers

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PROCEEDINGS ARTICLE | May 4, 2015

Numerical modeling of guided ultrasonic waves generated and received by PZT wafer in a beam

Proc. SPIE. 9543, Third International Symposium on Laser Interaction with Matter

KEYWORDS: Ferroelectric materials, Waveguides, Sensors, Dispersion, Ultrasonics, Wave propagation, Structural health monitoring, Finite element methods, Chemical elements, Semiconducting wafers

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PROCEEDINGS ARTICLE | May 4, 2015

Ultrasonic guided wave based horizontal crack imaging in metal plate by local wavenumber analysis

Proc. SPIE. 9543, Third International Symposium on Laser Interaction with Matter

KEYWORDS: Waveguides, Metals, Numerical simulations, Ultrasonics, Wave propagation, Transducers, Structural health monitoring, Finite element methods, Damage detection, Spatial resolution

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PROCEEDINGS ARTICLE | April 2, 2015

A diamagnetically stabilized horizontally levitated electromagnetic vibration energy harvester

Proc. SPIE. 9431, Active and Passive Smart Structures and Integrated Systems 2015

KEYWORDS: Copper, Resistance, Magnetism, Energy harvesting, Frequency modulation, Fermium, Motion models, Bromine, Electromagnetism, Prototyping

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PROCEEDINGS ARTICLE | March 8, 2014

Cracks monitoring and characterization by Ba0.64Sr0.36TiO3 flexoelectric strain gradient sensors

Proc. SPIE. 9061, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014

KEYWORDS: Seaborgium, Aerospace engineering, Polarization, Sensors, Ceramics, Inspection, Diagnostics, Distance measurement, Structural health monitoring, Aluminum

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PROCEEDINGS ARTICLE | March 8, 2014

A new type of microphone using flexoelectric barium strontium titnate

Proc. SPIE. 9062, Smart Sensor Phenomena, Technology, Networks, and Systems Integration 2014

KEYWORDS: Sensors, Electrodes, Ceramics, Dielectrics, Bridges, Zinc oxide, Acoustics, Barium, Strontium, Protactinium

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PROCEEDINGS ARTICLE | April 19, 2013

Design of a curvature sensor using a flexoelectric material

Proc. SPIE. 8692, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013

KEYWORDS: Ferroelectric materials, Sensors, Electrodes, Ceramics, Dielectrics, Fiber optics sensors, Structural health monitoring, Aluminum, Epoxies, Dielectric polarization

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PROCEEDINGS ARTICLE | April 19, 2013

Guided wave generation, sensing, and damage detection using in-plane shear piezoelectric wafer

Proc. SPIE. 8692, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013

KEYWORDS: Actuators, Waveguides, Sensors, Crystals, Wave plates, Wave propagation, Transducers, Finite element methods, Damage detection, Semiconducting wafers

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PROCEEDINGS ARTICLE | April 17, 2013

Focusing flexural Lamb waves by designing elastic metamaterials bonded on a plate

Proc. SPIE. 8695, Health Monitoring of Structural and Biological Systems 2013

KEYWORDS: Metamaterials, Silicon, Wave plates, Wave propagation, Structural health monitoring, Finite element methods, Damage detection, Aluminum, Phase velocity, Lead

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PROCEEDINGS ARTICLE | April 10, 2013

A vibration energy harvester using diamagnetic levitation

Proc. SPIE. 8688, Active and Passive Smart Structures and Integrated Systems 2013

KEYWORDS: Mathematical modeling, Sensors, Copper, Resistance, Magnetism, Energy harvesting, Very large scale integration, Wind energy, Magnetic sensors, Electromagnetism

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PROCEEDINGS ARTICLE | April 20, 2011

Fabrication of 1-3 piezo-composites using new micro PZT fibers

Proc. SPIE. 7983, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2011

KEYWORDS: Carbon, Ferroelectric materials, Sensors, Polymers, X-ray diffraction, Ceramics, Composites, Scanning electron microscopy, Materials science, Epoxies

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PROCEEDINGS ARTICLE | April 18, 2011

Carbon nanotube yarn sensors for structural health monitoring of composites

Proc. SPIE. 7983, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2011

KEYWORDS: Sensors, Electrodes, Polymers, Metals, Composites, Silver, Resistance, Structural health monitoring, Prototyping, Carbon nanotubes

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PROCEEDINGS ARTICLE | April 16, 2011

Physics-based model for predicting the performance of a miniature wind turbine

Proc. SPIE. 7981, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2011

KEYWORDS: Sensors, Resistance, Computing systems, Sensor networks, Wind turbine technology, Wind energy, Circuit switching, Performance modeling, Wind measurement, Systems modeling

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PROCEEDINGS ARTICLE | April 14, 2011

Defect imaging using time-reversal technique

Proc. SPIE. 7981, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2011

KEYWORDS: Defect detection, Sensors, Image processing, Numerical simulations, Receivers, Wave propagation, Image sensors, Data processing, Transducers, Structural health monitoring

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PROCEEDINGS ARTICLE | April 1, 2011

Integrated material state awareness system with self-learning symbiotic diagnostic algorithms and models

Proc. SPIE. 7984, Health Monitoring of Structural and Biological Systems 2011

KEYWORDS: Actuators, Modulation, Sensors, Inspection, Diagnostics, Ultrasonics, Wave propagation, Structural health monitoring, Algorithm development, System integration

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PROCEEDINGS ARTICLE | April 1, 2010

Design of a miniature wind turbine for powering wireless sensors

Proc. SPIE. 7647, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010

KEYWORDS: Data modeling, Sensors, Resistance, Sensor networks, Wind turbine technology, Wind energy, Thulium, Circuit switching, Performance modeling, Mechanical efficiency

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PROCEEDINGS ARTICLE | April 1, 2010

An optimal design of magnetostrictive material (MsM) based energy harvester

Proc. SPIE. 7647, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010

KEYWORDS: Ferroelectric materials, Sensors, Resistance, Magnetism, Energy harvesting, Capacitance, Diodes, Environmental sensing, Magnetostrictive materials, Instrument modeling

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PROCEEDINGS ARTICLE | April 4, 2009

Torsional waves in clad cores

Proc. SPIE. 7292, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009

KEYWORDS: Lithium, Aerospace engineering, Waveguides, Cladding, Signal attenuation, Dispersion, Wave propagation, Phase velocity, Bessel functions, Astronomical engineering

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PROCEEDINGS ARTICLE | March 30, 2009

Bayesian segmentation for damage image using MRF prior

Proc. SPIE. 7292, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009

KEYWORDS: Image processing algorithms and systems, Aerospace engineering, Sensors, Image segmentation, Image processing, Ultrasonics, Image sensors, Structural health monitoring, Magnetorheological finishing, Fuzzy logic

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PROCEEDINGS ARTICLE | April 19, 2007

Lamb wave propagation in composite laminates using a higher-order plate theory

Proc. SPIE. 6531, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2007

KEYWORDS: Dispersion, Matrices, Composites, Nondestructive evaluation, Wave plates, Wave propagation, Structural health monitoring, Damage detection, Phase velocity, Anisotropy

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PROCEEDINGS ARTICLE | April 10, 2007

Localization of damage and restoration of dynamic characteristics using distributed control

Proc. SPIE. 6529, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2007

KEYWORDS: Actuators, Lithium, Aerospace engineering, Sensors, Control systems, Finite element methods, Damage detection, Algorithm development, Feedback control, Current controlled current source

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PROCEEDINGS ARTICLE | April 10, 2007

Energy harvesting by magnetostrictive material (MsM) for powering wireless sensors in SHM

Proc. SPIE. 6529, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2007

KEYWORDS: Ferroelectric materials, Sensors, Magnetism, Sensor networks, Energy harvesting, Structural health monitoring, Diodes, Prototyping, Magnetostrictive materials, Electromechanical design

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PROCEEDINGS ARTICLE | April 11, 2006

Experimental study of Lamb wave propagation in composite laminates

Proc. SPIE. 6174, Smart Structures and Materials 2006: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems

KEYWORDS: Actuators, Ferroelectric materials, Wavelet transforms, Sensors, Dispersion, Composites, Wave plates, Wave propagation, Structural health monitoring, Phase velocity

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PROCEEDINGS ARTICLE | April 11, 2006

A pre-stack reverse-time migration method for multidamage detection in composite structure

Proc. SPIE. 6174, Smart Structures and Materials 2006: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems

KEYWORDS: Actuators, Ferroelectric materials, Sensors, Dispersion, Image processing, Composites, Wave plates, Wave propagation, Structural health monitoring, Damage detection

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PROCEEDINGS ARTICLE | April 11, 2006

Low power amplifier for piezoelectric actuator in wireless smart sensor applications

Proc. SPIE. 6174, Smart Structures and Materials 2006: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems

KEYWORDS: Actuators, Switches, Switching, Capacitors, Sensors, Digital filtering, Resistance, Amplifiers, Capacitance, Active remote sensing

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PROCEEDINGS ARTICLE | May 17, 2005

Wavelet-based built-in damage detection and identification for composites

Proc. SPIE. 5765, Smart Structures and Materials 2005: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems

KEYWORDS: Ferroelectric materials, Aerospace engineering, Sensors, Wavelets, Composites, Wave plates, Wave propagation, Structural health monitoring, Damage detection, Time-frequency analysis

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PROCEEDINGS ARTICLE | May 17, 2005

Development of wireless smart sensor for structural health monitoring

Proc. SPIE. 5765, Smart Structures and Materials 2005: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems

KEYWORDS: Clocks, Sensors, Field programmable gate arrays, Sensor networks, Data acquisition, Structural health monitoring, Microcontrollers, Wireless communications, Data communications, Smart sensors

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PROCEEDINGS ARTICLE | June 22, 1994

Analysis and control of flexible space structures employing distributed actuators and sensors

Proc. SPIE. 2233, Sensor Fusion and Aerospace Applications II

KEYWORDS: Actuators, Sensors, Electrodes, Composites, Control systems, Epoxies, Algorithm development, Motion models, Ferroelectric polymers, Piezoelectric effects

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Showing 5 of 37 publications

Conference Committee Involvement (11)

Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems

3 March 2019 | Denver, Colorado, United States

Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XIII

3 March 2019 | Denver, Colorado, United States

Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XII

5 March 2018 | Denver, Colorado, United States

Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems

5 March 2018 | Denver, Colorado, United States

Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XI

26 March 2017 | Portland, Oregon, United States

Showing 5 of 11 published special sections

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