Dr. Lingyu Yu Profile

Dr. Lingyu Yu

at Univ of South Carolina

SPIE Involvement:

Conference Program Committee | Author

Publications (48)

Proceedings Article | 10 May 2024 Presentation

Fully non-contact ultrasonic nondestructive inspection on thick stainless steel plates in nuclear facilities

Andrew Campbell, Yuh-Jin Chao, Daniel Foley, Thanh-Tam Truong, Lingyu Yu

Proceedings Volume PC12950, PC1295007 (2024) https://doi.org/10.1117/12.3011176

KEYWORDS: Inspection, Nondestructive evaluation, Laser ultrasonics, Ultrasonics, Stainless steel, Corrosion, Wave propagation, Ultrasonic nondestructive evaluation, Semiconducting wafers, Pulsed laser operation

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Proceedings Article | 9 May 2024 Presentation + Paper

Thickness measurement of metal components using guided waves and fully non-contact PL-SLDV system

Andrew Campbell, Wenfeng Xiao, Kathryn Metzger, Jorie Walters, Lingyu Yu

Proceedings Volume 12951, 129511A (2024) https://doi.org/10.1117/12.3011174

KEYWORDS: Materials properties, Coating thickness, Aluminum, Inspection, Pulsed laser operation, Metals, Coating, Nondestructive evaluation, Cladding, Wave propagation

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Proceedings Article | 18 April 2023 Paper

Application of an engineered composite patch toward crack damage mitigation on stainless steel plates

Nikta Amiri, Andrew Campbell, Yuh-Jin Chao, Lingyu Yu

Proceedings Volume 12487, 124870C (2023) https://doi.org/10.1117/12.2658536

KEYWORDS: Composites, Adhesives, Ferroelectric materials, Stainless steel, Nondestructive evaluation, Epoxies, Wave propagation, Ultrasonics, Reflection, Inspection

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Proceedings Article | 19 April 2022 Presentation + Paper

Excitation and sensing of Lamb waves in very thin metals and nuclear cladding material using fully non-contact PL-SLDV system

Elsa Compton, Andrew Campbell, Pei-Kang Sun, Lingyu Yu

Proceedings Volume 12048, 1204805 (2022) https://doi.org/10.1117/12.2612634

KEYWORDS: Aluminum, Sensing systems, Composites, Pulsed laser operation, Cladding, Spatial resolution

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Proceedings Article | 18 April 2022 Presentation + Paper

Design and application of an engineered composite patch toward crack damage mitigation on stainless steel plates

Pei-Kang Sun, Andrew Campbell, Elsa Compton, Yuh-Jin Chao, Lingyu Yu

Proceedings Volume 12047, 1204706 (2022) https://doi.org/10.1117/12.2614602

KEYWORDS: Adhesives, Composites, Ultrasonics, Corrosion, Humidity, Carbon, Nondestructive evaluation, Epoxies, Molecules, Transducers

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Proceedings Article | 22 March 2021 Presentation + Paper

Surface displacement field by pulsed laser irradiation on metallic surfaces

Zhaoyun Ma, Lingyu Yu

Proceedings Volume 11591, 115911U (2021) https://doi.org/10.1117/12.2582474

KEYWORDS: Ultrasonics, Pulsed laser operation, Laser irradiation, Nondestructive evaluation, Ultrasonic non-destructive evaluation, Signal generators, Signal detection, Numerical analysis, Material characterization, Laser development

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Proceedings Article | 22 March 2021 Presentation + Paper

Non-contact passive sensing of acoustic emission signal using the air-coupled transducer

Wenfeng Xiao, Lingyu Yu

Proceedings Volume 11593, 1159327 (2021) https://doi.org/10.1117/12.2583218

KEYWORDS: Acoustic emission, Passive remote sensing, Transducers, Composites, Sensors, Wave propagation, Structural health monitoring, Structural engineering, Signal detection, Safety

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Proceedings Article | 22 April 2020 Presentation + Paper

Nondestructive evaluation of nuclear spent fuel dry cask structures using non-contact ACT-SLDV Lamb wave method

Wenfeng Xiao, Lingyu Yu

Proceedings Volume 11382, 113820D (2020) https://doi.org/10.1117/12.2558303

KEYWORDS: Inspection, Nondestructive evaluation, Wave propagation, Aluminum, Ultrasonics, Sensing systems, Damage detection, Imaging systems, Transducers

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Proceedings Article | 22 April 2020 Presentation + Paper

Ultrasonic Lamb wave inspection of composite defects

Zhaoyun Ma, Lingyu Yu

Proceedings Volume 11381, 1138103 (2020) https://doi.org/10.1117/12.2558188

KEYWORDS: Inspection, Composites, Nondestructive evaluation, Reflectivity, Actuators, Defect inspection, Wave plates, Imaging systems, Ultrasonic non-destructive evaluation

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Proceedings Article | 22 April 2020 Presentation + Paper

Laser based remote and rapid inspection for composite plates

Zhaoyun Ma, Lingyu Yu

Proceedings Volume 11382, 113820H (2020) https://doi.org/10.1117/12.2558192

KEYWORDS: Inspection, Composites, Wave plates, Pulsed laser operation, Quartz, Nondestructive evaluation, Doppler effect, Laser systems engineering, Automated test equipment

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Proceedings Article | 22 April 2020 Presentation + Paper

Composite bond quality nondestructive evaluation with noncontact Lamb wave system

Wenfeng Xiao, Stephen Howden, Lingyu Yu

Proceedings Volume 11380, 113801M (2020) https://doi.org/10.1117/12.2558296

KEYWORDS: Composites, Inspection, Silicon, Contamination, Nondestructive evaluation, Transducers, Wave propagation, Pulsed laser operation, Ultrasonics, Adhesives

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Proceedings Article | 1 April 2019 Presentation + Paper

Nondestructive evaluation with fully non-contact air-coupled transducer-scanning laser Doppler vibrometer Lamb wave system

Wenfeng Xiao, Lingyu Yu

Proceedings Volume 10971, 109711G (2019) https://doi.org/10.1117/12.2513943

KEYWORDS: Wave propagation, Inspection, Wave plates, Nondestructive evaluation, Transducers, Ultrasonics, Waveguides, Aluminum, Dispersion, Phase velocity

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Proceedings Article | 1 April 2019 Presentation + Paper

Lamb wave defect detection and evaluation using a fully non-contact laser system

Zhaoyun Ma, Lingyu Yu

Proceedings Volume 10972, 1097221 (2019) https://doi.org/10.1117/12.2514048

KEYWORDS: Wave plates, Quartz, Aluminum, Signal to noise ratio, Pulsed laser operation, Laser systems engineering, Nondestructive evaluation, Transducers, Defect detection

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Proceedings Article | 27 March 2018 Paper

Piezoelectric wafer active sensors under gamma radiation exposure toward applications for structural health monitoring of nuclear dry cask storage systems

Mohammad Faisal Haider, Hanfei Mei, Bin Lin, Lingyu Yu, Victor Giurgiutiu, Poh-Sang Lam, Christopher Verst

Proceedings Volume 10599, 105992F (2018) https://doi.org/10.1117/12.2297390

KEYWORDS: Transducers, Gamma radiation, Ferroelectric materials, Structural health monitoring, Capacitance, Semiconducting wafers, Active sensors, Crystals, Sensors, Radiation effects

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Proceedings Article | 27 March 2018 Presentation + Paper

Active health monitoring of TN32 dry cask using a scaled down model

Roshan Joseph, Stephen Howden, Bin Lin, Lingyu Yu, Victor Giurgiutiu

Proceedings Volume 10600, 106000B (2018) https://doi.org/10.1117/12.2297278

KEYWORDS: Wave propagation, Sensors, Waveguides, Photovoltaics, Distortion, Transducers, Adhesives, Drug discovery, Lead, Phase velocity

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Proceedings Article | 27 March 2018 Presentation + Paper

Acoustic emission and active sensing capabilities on full-scale nuclear dry cask storage structures

Stephen Howden, Bin Lin, Lingyu Yu, Victor Giurgiutiu

Proceedings Volume 10601, 1060109 (2018) https://doi.org/10.1117/12.2297441

KEYWORDS: Sensors, Active remote sensing, Acoustic emission, Transducers, Acoustics, Ultrasonics, Structural health monitoring, Sensing systems

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Proceedings Article | 19 April 2017 Presentation + Paper

Sensing capabilities of piezoelectric wafer active sensors in extreme nuclear environment

Mohammad Faisal Haider, Bin Lin, Lingyu Yu, Victor Giurgiutiu

Proceedings Volume 10169, 101691Z (2017) https://doi.org/10.1117/12.2260162

KEYWORDS: Transducers, Capacitance, Radiation effects, Structural health monitoring, Gamma radiation, Sensors, Semiconducting wafers, Active sensors, Ferroelectric materials, Active remote sensing, Environmental sensing, Crystals

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There is considerable demand for structural health monitoring (SHM) at locations where there are substantial radiation fields such as nuclear reactor components, dry cask storage canister, irradiated fuel assemblies, etc. Piezoelectric wafer active sensors (PWAS) have been emerged as one of the major SHM sensing technologies. In order to use PWAS to perform SHM in nuclear environment, radiation influence on sensor and sensing capability needs to be investigated to assure the reliability of the PWAS based method. Radiation may cause degradation or even complete failure of sensors. Gamma radiation is one of the major radiation sources near the nuclear source. Therefore, experimental investigation was completed on the gamma radiation endurance of piezoelectric sensors. The irradiation test was done in a Co-60 Gamma Irradiator. Lead Zirconate Titanate (PZT) and Gallium Orthophosphate (GaPO4) PWAS were exposed under gamma radiation at 100 Gy/hr rate for 20 hours. Electro-mechanical (E/M) admittance signatures and electrical capacitance were measured to evaluate the PWAS performance before and after every 4 hours exposure to gamma radiation. PWAS were kept at room temperature for 6 days after each 4 hours radiation exposure to investigate the effect of time on PWAS by gamma radiation. It was found that, PZT-PWAS show variation in resonance frequency for both in plane and thickness mode E/M admittance. Where, the changes in resonance amplitudes are larger for PZT-PWAS. GaPO4-PWAS E/M impedance/admittance spectra don’t show any reasonable change after gamma irradiation. A degradation behavior of electrical properties in the PZT-PWAS was observed. Capacitance value of PZT-PWAS decreases from 3.2 nF to 3.07 nF after exposing to gamma radiation for 20 hours at 100Gy/hour. This degradation behavior of electrical properties may be explained by the pinning of domain walls by some radiation induced effect. GaPO4-PWAS doesn’t show reasonable degradation in electrical properties. GaPO4 has good radiation endurance, although amplitude sensitivity is relatively low.

Proceedings Article | 20 April 2016 Paper

Acoustic emission detection with fiber optical sensors for dry cask storage health monitoring

Bin Lin, Jingjing Bao, Lingyu Yu, Victor Giurgiutiu

Proceedings Volume 9803, 98031H (2016) https://doi.org/10.1117/12.2219337

KEYWORDS: Fiber Bragg gratings, Fiber optics sensors, Sensors, Acoustic emission, Structural health monitoring, Fiber optics, Safety, Sensor technology, Fiber optics tests, Ultrasonics, Tunable lasers, Waveguides

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Proceedings Article | 15 April 2016 Paper

Guided wave damage detection with PZT-FBG sensing

Xiaoyi Sun, Zhenhua Tian, Bin Lin, Lingyu Yu

Proceedings Volume 9804, 98042B (2016) https://doi.org/10.1117/12.2219619

KEYWORDS: Fiber Bragg gratings, Waveguides, Sensors, Damage detection, Ferroelectric materials, Source localization, Actuators, Wafer-level optics, Semiconducting wafers, Receivers, Structural health monitoring, Aluminum, Wave plates, Sensing systems

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Proceedings Article | 1 April 2016 Paper

Phased array beamforming and imaging in composite laminates using guided waves

Zhenhua Tian, Cara A. Leckey, Lingyu Yu

Proceedings Volume 9805, 980505 (2016) https://doi.org/10.1117/12.2218954

KEYWORDS: Phased arrays, Composites, Imaging arrays, Waveguides, Inspection, Defect inspection, Damage detection, Optical simulations, Defect detection, Doppler effect, Wave propagation, Ferroelectric materials, Wavefronts

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Proceedings Article | 1 April 2016 Paper

Develop an piezoelectric sensing based on SHM system for nuclear dry storage system

Linlin Ma, Bin Lin, Xiaoyi Sun, Stephen Howden, Lingyu Yu

Proceedings Volume 9806, 98060U (2016) https://doi.org/10.1117/12.2219899

KEYWORDS: Structural health monitoring, Sensors, Damage detection, Waveguides, Algorithm development, Image sensors, Sensing systems, New and emerging technologies, Sensor performance, Temperature metrology, Imaging arrays, Capacitance, Electromagnetic coupling, Wave propagation

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Proceedings Article | 3 April 2015 Paper

Impact induced delamination detection and quantification with guided wavefield analysis

Zhenhua Tian, Cara A. Leckey, Lingyu Yu, Jeffrey Seebo

Proceedings Volume 9435, 94351P (2015) https://doi.org/10.1117/12.2083358

KEYWORDS: Composites, Waveguides, Wave propagation, Wave plates, Ultrasonics, Ferroelectric materials, Actuators, Vibrometry, Doppler effect, Image processing

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Proceedings Article | 1 April 2015 Paper

Review and study of physics driven pitting corrosion modeling in 2024-T3 aluminum alloys

Lingyu Yu, Kumar Jata

Proceedings Volume 9437, 94372E (2015) https://doi.org/10.1117/12.2086274

KEYWORDS: Corrosion, Particles, Aluminum, Data modeling, Systems modeling, Physics, Coastal modeling, Aircraft structures, Safety, Reliability

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Proceedings Article | 27 March 2015 Paper

Thermal effect on E/M impedance spectroscopy of piezoelectric wafer active sensors

Tuncay Kamas, Erik Frankforter, Lingyu Lucy Yu, Bin Lin, Victor Giurgiutiu

Proceedings Volume 9435, 94350O (2015) https://doi.org/10.1117/12.2083958

KEYWORDS: Electromagnetic coupling, Capacitance, Temperature metrology, Ferroelectric materials, Dielectric spectroscopy, Semiconducting wafers, Active sensors, Structural health monitoring, Thermal effects, Resonators

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Proceedings Article | 27 March 2015 Paper

Developing a structural health monitoring system for nuclear dry cask storage canister

Xiaoyi Sun, Bin Lin, Jingjing Bao, Victor Giurgiutiu, Travis Knight, Poh-Sang Lam, Lingyu Yu

Proceedings Volume 9439, 94390N (2015) https://doi.org/10.1117/12.2085045

KEYWORDS: Structural health monitoring, Temperature metrology, Sensors, Nondestructive evaluation, Ultrasonics, Electromagnetic coupling, Sensing systems, Waveguides, Wave propagation, Semiconducting wafers

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Proceedings Article | 23 March 2015 Paper

Wavenumber study of guided waves in aluminum honeycomb sandwich structures

Zhenhua Tian, Lingyu Yu, Guoliang Huang, Michel van Tooren, Will Mitchell

Proceedings Volume 9438, 943807 (2015) https://doi.org/10.1117/12.2083742

KEYWORDS: Waveguides, Skin, Wave propagation, Finite element methods, Vibrometry, Ferroelectric materials, Aluminum, Wave plates, Wavefronts, Actuators

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Proceedings Article | 10 April 2014 Paper

Single mode Lamb wave phased array beamforming with hybrid PZT-SLDV sensing

Zhenhua Tian, Lingyu Yu

Proceedings Volume 9061, 906136 (2014) https://doi.org/10.1117/12.2045199

KEYWORDS: Phased arrays, Wave propagation, Ferroelectric materials, Imaging arrays, Quartz, Actuators, Sensors, Spatial resolution, Scattering, Aluminum

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Proceedings Article | 10 April 2014 Paper

Guided wave propagation study on laminated composites by frequency-wavenumber technique

Zhenhua Tian, Lingyu Yu, Cara A. Leckey

Proceedings Volume 9063, 90631O (2014) https://doi.org/10.1117/12.2044927

KEYWORDS: Composites, Wave propagation, Optical filters, Waveguides, Wave plates, Filtering (signal processing), Data modeling, Fourier transforms, Dispersion, Data acquisition

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Proceedings Article | 19 April 2013 Paper

A dual mode imaging array for damage detection in grout structures

Zhenhua Tian, Lingyu Yu, Mohamed EL-Batanouny, Paul Ziehl, Liuxian Zhao

Proceedings Volume 8692, 86920D (2013) https://doi.org/10.1117/12.2009751

KEYWORDS: Sensors, Imaging arrays, Ferroelectric materials, Active remote sensing, Ultrasonics, Semiconducting wafers, Damage detection, Wave propagation, Receivers, Scattering

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Proceedings Article | 17 April 2013 Paper

Crack detection with Lamb wave wavenumber analysis

Zhenhua Tian, Cara Leckey, Matt Rogge, Lingyu Yu

Proceedings Volume 8695, 86952Z (2013) https://doi.org/10.1117/12.2012249

KEYWORDS: Fourier transforms, Wave propagation, 3D metrology, Structural health monitoring, Damage detection, Aluminum, Analytical research, Actuators, Ferroelectric materials, Wave plates

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Proceedings Article | 11 April 2013 Paper

In-situ health monitoring on steel bridges with dual mode piezoelectric sensors

Lingyu Yu, H. Felix Wu, Victor Giurgiutiu, Paul Ziehl

Proceedings Volume 8694, 869418 (2013) https://doi.org/10.1117/12.2009746

KEYWORDS: Sensors, Bridges, Active remote sensing, Transducers, Inspection, Wave propagation, Signal detection, Signal to noise ratio, Acoustic emission, Aluminum

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Proceedings Article | 6 April 2012 Paper

Ultrasonic gas accumulation detection and evaluation in nuclear cooling pipes

Lingyu Yu, Bin Lin, Yong-June Shin, Jingjiang Wang, Zhenhua Tian

Proceedings Volume 8345, 83454U (2012) https://doi.org/10.1117/12.915200

KEYWORDS: Wave propagation, Waveguides, Time-frequency analysis, Ultrasonics, Wave plates, Sensors, Semiconducting wafers, Actuators, Nondestructive evaluation, Transducers

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Proceedings Article | 5 April 2012 Paper

Comparative study of active and passive sensing with AE and PWAS transducers

Lingyu Yu, Victor Giurgiutiu, Jianguo Yu, Paul Ziehl, Liuxian Zhao

Proceedings Volume 8347, 834720 (2012) https://doi.org/10.1117/12.915670

KEYWORDS: Transducers, Sensors, Bridges, Active remote sensing, Wave propagation, Passive remote sensing, Semiconducting wafers, Active sensors, Signal to noise ratio, Signal detection

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Proceedings Article | 5 April 2012 Paper

Predictive modeling of composite material degradation using piezoelectric wafer sensors electromechanical impedance spectroscopy

Matthieu Gresil, Lingyu Yu, Mike Sutton, Siming Guo, Patrick Pollock

Proceedings Volume 8347, 83470R (2012) https://doi.org/10.1117/12.915202

KEYWORDS: Electromagnetic coupling, Composites, Sensors, 3D modeling, Finite element methods, Structural health monitoring, Semiconducting wafers, Dielectric spectroscopy, Transducers, Glasses

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Proceedings Article | 20 April 2011 Paper

Fatigue crack detection in thick steel structures with piezoelectric wafer active sensors

M. Gresil, L. Yu, V. Giurgiutiu

Proceedings Volume 7983, 79832Y (2011) https://doi.org/10.1117/12.882137

KEYWORDS: Wave propagation, Structural health monitoring, Wave plates, Waveguides, Transducers, Sensors, Wavelets, Acoustic emission, Nondestructive evaluation, Signal processing

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This paper presents a set of numerical and experimental results on the use of guided waves for structural health monitoring (SHM) of crack growth during a fatigue test in a thick steel plate used for civil engineering application. The capability of embedded piezoelectric wafer active sensors (PWAS) to perform in situ nondestructive evaluation (NDE) is explored. Numerical simulation and experimental tests are used to prove that PWAS can perform active SHM using guided wave pitch-catch method and passive SHM using acoustic emission (AE). Multi-physics finite element (MPFEM) codes are used to simulate the transmission and reception of guided waves in a 1-mm plate and their diffraction by a through hole. The MP-FEM approach permitted that the input and output variables be expressed directly in electric terms while the two-ways electromechanical conversion was done internally in the MP-FEM formulation. The analysis was repeated for several hole sizes and a damage index performances was tested. AE simulation was performed with the MP-FEM approach in a 13-mm plate in the shape of the compact tension (CT) fracture mechanics specimen. The AE event was simulated as a pulse of defined duration and amplitude. The electrical signal measured at a receiver PWAS was simulated. Daubechies wavelet transform was used to process the signal and identify its Lamb modes and FFT frequency contents. Experimental tests were performed with PWAS transducers acting as passive receivers of AE signals. The 8-mm thick flange of an I beam was instrumented on one side with PWAS transducers and on the other side with conventional AE transducers (PAC R15I) acting as comparison witnesses. An AE source was simulated using 0.5- mm pencil lead breaks; the PWAS transducers were able to pick up AE signal with good strength. Subsequently, PWAS transducers and R15I sensors were applied to a 13-mm CT specimen subjected to accelerated fatigue testing. The PWAS and R15I transducers signals were collected with PAC data acquisition system using the AE-win software. Comparative results of AE hits and source localization from the PWAS and R15I sensors are given. Active sensing in pitch catch mode was applied between the PWAS transducers installed on the CT specimen and damage indexes were calculated and correlated with physical crack growth as measured optically. The paper finishes with summary, conclusion, and suggestions for further work.

Proceedings Article | 20 April 2011 Paper

Adaptation of PWAS transducers to acoustic emission sensors

Lingyu Yu, Sepandarmaz Momeni, Valery Godinez, Victor Giurgiutiu

Proceedings Volume 7983, 798327 (2011) https://doi.org/10.1117/12.880157

KEYWORDS: Sensors, Acoustic emission, Transducers, Signal detection, Bridges, Aluminum, Signal to noise ratio, Active sensors, Semiconducting wafers, Interference (communication)

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Proceedings Article | 15 April 2011 Paper

A nondestructive experimental study on damage progression in woven glass-epoxy composites

Patrick Pollock, Lingyu Yu, Siming Guo, Michael Sutton

Proceedings Volume 7981, 79813M (2011) https://doi.org/10.1117/12.882142

KEYWORDS: Composites, Electromagnetic coupling, Digital image correlation, Sensors, Structural health monitoring, Dielectric spectroscopy, Nondestructive evaluation, Semiconducting wafers, Active sensors, Cameras

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Proceedings Article | 9 April 2010 Paper

Piezoelectric wafer active sensor guided wave imaging

Lingyu Yu, Victor Giurgiutiu

Proceedings Volume 7648, 76480S (2010) https://doi.org/10.1117/12.847627

KEYWORDS: Imaging arrays, Waveguides, Sensors, Phased arrays, Aluminum, Semiconducting wafers, Active sensors, Wave propagation, Transducers, Image processing

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Proceedings Article | 9 April 2010 Paper

Quantification of fatigue cracking in CT specimens with passive and active piezoelectric sensing

Jianguo Yu, Paul Ziehl, Boris Zarate, Juan Caicedo, Lingyu Yu, Victor Giurgiutiu, Brian Metrovich, Fabio Matta

Proceedings Volume 7649, 76490R (2010) https://doi.org/10.1117/12.847945

KEYWORDS: Acoustic emission, Data modeling, Active remote sensing, Bridges, Transducers, Sensors, Lead, Signal to noise ratio, Genetic algorithms, Signal detection

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Proceedings Article | 1 April 2010 Paper

Steel bridge fatigue crack detection with piezoelectric wafer active sensors

Lingyu Yu, Victor Giurgiutiu, Paul Ziehl, Didem Ozevin, Patrick Pollock

Proceedings Volume 7647, 76471Y (2010) https://doi.org/10.1117/12.847603

KEYWORDS: Sensors, Acoustic emission, Bridges, Active remote sensing, Signal detection, Semiconducting wafers, Transducers, Active sensors, Imaging arrays, Wave plates

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Proceedings Article | 8 April 2009 Paper

Lamb wave dispersion compensation in piezoelectric wafer active sensor phased-array applications

Buli Xu, Lingyu Yu, Victor Giurgiutiu

Proceedings Volume 7295, 729516 (2009) https://doi.org/10.1117/12.816085

KEYWORDS: Dispersion, Wave propagation, Wave plates, Aluminum, Phased arrays, Computer simulations, Spatial resolution, Numerical simulations, Transducers, Signal processing

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Proceedings Article | 8 April 2009 Paper

Piezoelectric based sensing in wireless steel bridge health monitoring

Lingyu Yu, Victor Giurgiutiu, Paul Ziehl, Didem Ozevin

Proceedings Volume 7294, 72941D (2009) https://doi.org/10.1117/12.830128

KEYWORDS: Bridges, Sensors, Signal detection, Active remote sensing, Sensing systems, Damage detection, Inspection, Acoustic emission, Telecommunications, Semiconducting wafers

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Proceedings Article | 30 March 2009 Paper

Lamb waves decomposition and mode identification using matching pursuit method

Buli Xu, Victor Giurgiutiu, Lingyu Yu

Proceedings Volume 7292, 72920I (2009) https://doi.org/10.1117/12.816087

KEYWORDS: Associative arrays, Chemical species, Signal processing, Structural health monitoring, Fourier transforms, Time-frequency analysis, Interference (communication), Wave propagation, Wave plates, Denoising

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Proceedings Article | 8 April 2008 Paper

A multi-mode sensing system for corrosion detection using piezoelectric wafer active sensors

Lingyu Yu, Victor Giurgiutiu, Patrick Pollock

Proceedings Volume 6932, 69322H (2008) https://doi.org/10.1117/12.776670

KEYWORDS: Corrosion, Wave plates, Active sensors, Ultrasonics, Waveguides, Semiconducting wafers, Structural health monitoring, Transducers, Aluminum, Sensors

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Proceedings Article | 10 April 2007 Paper

Omnidirectional guided wave PWAS phased array for thin-wall structure damage detection

Lingyu Yu, Victor Giurgiutiu, James Kendall

Proceedings Volume 6529, 652939 (2007) https://doi.org/10.1117/12.717738

KEYWORDS: Phased arrays, Damage detection, Waveguides, Aluminum, Wave plates, Ultrasonics, Image processing, Wave propagation, Wavefronts, Optical simulations

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Proceedings Article | 5 April 2006 Paper

Design, implementation, and comparison of guided wave phased arrays using embedded piezoelectric wafer active sensors for structural health monitoring

Lingyu Yu, Victor Giurgiutiu

Proceedings Volume 6173, 61731M (2006) https://doi.org/10.1117/12.658649

KEYWORDS: Phased arrays, Waveguides, Inspection, Structural health monitoring, Optical simulations, Sensors, Wave propagation, Ultrasonics, Damage detection, Semiconducting wafers

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Phased array can interrogate large structural areas from a single location using ultrasonic guided waves generated by tuned piezoelectric wafer active sensors that are permanently attached (embedded) to the structure. Various array parameters determine the array beamforming and steering characteristics. This paper aims to bring up several one or two dimension array designs and research on their beamforming properties and damage detection performance through both analytical simulation and laboratory experiments. The paper will firstly present the generic guided wave phased array beamforming formulation and explain how the beamforming characteristics are affected by the array parameters such as number of elements, element spacing, and steering angle. Preliminary work of implementing a one dimensional linear phase array is then followed to exemplify how our embedded ultrasonic structural radar (EUSR) scans and detects damage on the plate structures. However, such a linear array has the limitations that it has limited scanning range due to the beamforming directionality deficiency and it can only scan the 0^o~180^o range either in front of or behind it, i.e., it can not tell if the damage is in the positive or negative direction in the polar coordinates. Hence, we proposed several improved array designs including: (1) a miniaturized array using smaller PWAS; (2) an array using rectangular PWAS; (3) a cross-shaped two dimensional array; (4) a L-shaped two dimensional array. Extensive simulation work has been done to explore the beamforming and beamsteering properties of those arrays. Laboratory experiments have also been conducted to testify the arrays damage detection abilities. The results show that the miniaturized array can look into larger area and be used for damage detection of compact specimen with complicated geometry. Signal rectangular PWAS has directional rather than omnidirectional beamforming which resulting in improved beamforming of the phased array using such PWAS. Two dimensional arrays show directional beamforming within full range of 0^o ~ 360^o degrees though having limited working steering angles. We finally end up with discussion and conclusion of the arrays and some expectations for future work.

Proceedings Article | 9 May 2005 Paper

Multi-damage detection with embedded ultrasonic structural radar algorithm using piezoelectric wafer active sensors through advanced signal processing

Lingyu Yu, Victor Giurgiutiu

Proceedings Volume 5768, (2005) https://doi.org/10.1117/12.598186

KEYWORDS: Wavelets, Continuous wavelet transforms, Signal processing, Discrete wavelet transforms, Ultrasonics, Denoising, Fourier transforms, Sensors, Radar, Inspection

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Proceedings Article | 29 July 2004 Paper

Signal processing techniques for damage detection with piezoelectric wafer active sensors and embedded ultrasonic structural radar

Lingyu Yu, Jingjing Bao, Victor Giurgiutiu

Proceedings Volume 5391, (2004) https://doi.org/10.1117/12.540512

KEYWORDS: Signal processing, Sensors, Denoising, Ultrasonics, Continuous wavelet transforms, Radar, Discrete wavelet transforms, Wavelets, Interference (communication), Signal detection

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Showing 5 of 48 publications

Conference Committee Involvement (24)

Health Monitoring of Structural and Biological Systems XIX

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

Health Monitoring of Structural and Biological Systems XVIII

25 March 2024 | Long Beach, California, United States

Health Monitoring of Structural and Biological Systems XVII

13 March 2023 | Long Beach, California, United States

Health Monitoring of Structural and Biological Systems XVI

7 March 2022 | Long Beach, California, United States

Health Monitoring of Structural and Biological Systems XV

8 March 2021 | Online Only, California, United States

Health Monitoring of Structural and Biological Systems XIV

27 April 2020 | Online Only, California, United States

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

27 April 2020 | Online Only, California, United States

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

27 April 2020 | Online Only, California, United States

Health Monitoring of Structural and Biological Systems XIII

4 March 2019 | Denver, Colorado, United States

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

4 March 2019 | Denver, Colorado, United States

Smart Structures and NDE for Energy Systems and Industry 4.0

4 March 2019 | Denver, Colorado, United States

Health Monitoring of Structural and Biological Systems XII

5 March 2018 | Denver, Colorado, United States

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

5 March 2018 | Denver, Colorado, United States

Smart Materials and Nondestructive Evaluation for Energy Systems IV

5 March 2018 | Denver, Colorado, United States

Smart Materials and Nondestructive Evaluation for Energy Systems III

27 March 2017 | Portland, Oregon, United States

Health Monitoring of Structural and Biological Systems XI

26 March 2017 | Portland, Oregon, United States

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

26 March 2017 | Portland, Oregon, United States

Health Monitoring of Structural and Biological Systems X

21 March 2016 | Las Vegas, Nevada, United States

Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, and Civil Infrastructure X

21 March 2016 | Las Vegas, Nevada, United States

Structural Health Monitoring and Inspection of Advanced Materials, Aerospace, and Civil Infrastructure IX

9 March 2015 | San Diego, California, United States

Health Monitoring of Structural and Biological Systems IX

9 March 2015 | San Diego, California, United States

Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security VIII

10 March 2014 | San Diego, California, United States

Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security VII

10 March 2013 | San Diego, California, United States

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

12 March 2012 | San Diego, California, United States

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