Prof. Francesco Lanza di Scalea Profile

Prof. Francesco Lanza di Scalea

Professor of Structural Engineering at Univ of California San Diego

SPIE Involvement:

Conference Program Committee | Author

Publications (77)

Proceedings Article | 9 May 2024 Paper

Passive monitoring of structures using deconvolution-reconstructed waves

Ali Zare Hosseinzadeh, Georgios Tsampras, Francesco Lanza di Scalea

Proceedings Volume 12949, 1294914 (2024) https://doi.org/10.1117/12.3012016

KEYWORDS: Deconvolution, Aluminum, Buildings, Structural monitoring, Receivers, Accelerometers, Wave propagation, Earthquakes, Interferometry, Time-frequency analysis

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Proceedings Article | 9 May 2024 Presentation + Paper

Passive ultrasonic sensing for NDT and SHM

Francesco Lanza di Scalea, Chengyang Huang, Ali Zare Hosseinzadeh

Proceedings Volume 12951, 129510X (2024) https://doi.org/10.1117/12.3018364

KEYWORDS: Receivers, Structural health monitoring, Nondestructive evaluation, Ultrasonics, Sensors, Spatial filtering, Wind turbine technology, Matrices, Image segmentation, Deconvolution

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Proceedings Article | 9 May 2024 Presentation + Paper

Passive ultrasonic beamforming for fast and efficient imaging

Francesco Lanza di Scalea, Chengyang Huang, Ali Zare Hosseinzadeh

Proceedings Volume 12951, 129511O (2024) https://doi.org/10.1117/12.3011170

KEYWORDS: Receivers, Spatial filtering, Chemical elements, Transducers, Fire, Transmitters, Ultrasonics, Reflection, Windows, Signal to noise ratio

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Proceedings Article | 25 April 2023 Presentation + Paper

On the computer vision-based approach for output-only wave-based structural identification and health monitoring

Ali Zare Hosseinzadeh, Francesco Lanza di Scalea

Proceedings Volume 12488, 1248816 (2023) https://doi.org/10.1117/12.2660308

KEYWORDS: Cameras, Deconvolution, Wave propagation, Interferometry, Structural monitoring, Detection and tracking algorithms, Damage detection

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Proceedings Article | 18 April 2023 Presentation + Paper

An ultrasonic scanning system for damage detection in composite built-up panels by inversion of guided wave dispersion curves

Chengyang Huang, Janelle Dela-cueva, Benjamin Katko, Hyonny Kim, Francesco Lanza di Scalea

Proceedings Volume 12487, 124870K (2023) https://doi.org/10.1117/12.2657472

KEYWORDS: Elasticity, Waveguides, Dispersion, Ultrasonics, Phase velocity, Wave propagation, Composites, Mathematical optimization, Materials properties

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Proceedings Article | 10 April 2023 Presentation + Paper

Ultrasound time reversal imaging of extended targets using a broadband white noise constraint processor

Chengyang Huang, Francesco Lanza di Scalea

Proceedings Volume 12470, 1247006 (2023) https://doi.org/10.1117/12.2654462

KEYWORDS: Phased arrays, Image resolution, Spatial filtering, Covariance matrices, Wave propagation, Ultrasonography, Signal processing, Image quality, Signal to noise ratio

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Proceedings Article | 19 April 2022 Paper

Artificial intelligence-based approach to estimate relative deflection of railroad ties using airborne ultrasonic testing

Ali Zare Hosseinzadeh, Diptojit Datta, Francesco Lanza di Scalea

Proceedings Volume 12048, 120480Y (2022) https://doi.org/10.1117/12.2617558

KEYWORDS: Sensing systems, Ranging, Spatial resolution, Inspection, Image processing, Transducers, Cameras, Ultrasonics, Prototyping, Visualization, Sensing systems, Ranging, Spatial resolution, Inspection, Image processing

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Proceedings Article | 24 March 2021 Open Access

Research topics on ultrasonic testing of materials and structures

Francesco Lanza di Scalea

Proceedings Volume 11586, 1158604 (2021) https://doi.org/10.1117/12.2585007

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Proceedings Article | 22 March 2021 Presentation + Paper

Ultrasonic imaging in solids using time reversal operator and coherent matched-field processing

Chengyang Huang, Francesco Lanza di Scalea

Proceedings Volume 11593, 1159324 (2021) https://doi.org/10.1117/12.2581459

KEYWORDS: Ultrasonography, Solids, Ultrasonics, Phased arrays, Nondestructive evaluation, Wave propagation, Numerical simulations, Active remote sensing

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Proceedings Article | 22 March 2021 Presentation + Paper

A data-driven matched field processing approach for primary/secondary source localization in plates: proof of concept

Ali Zare Hosseinzadeh, Diptojit Datta, Francesco Lanza di Scalea

Proceedings Volume 11593, 1159328 (2021) https://doi.org/10.1117/12.2592019

KEYWORDS: Source localization, Acoustics, Structural monitoring, Scattering, Laser scattering, Fourier transforms, Defect detection, Data modeling, Associative arrays, Aluminum

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Proceedings Article | 23 April 2020 Paper

Defect detection performance of a high-speed rail inspection system from passive acoustic identification

Diptojit Datta, Albert Liang, Ranting Cui, Francesco Lanza di Scalea

Proceedings Volume 11379, 113791G (2020) https://doi.org/10.1117/12.2558205

KEYWORDS: Inspection, Transducers, Prototyping, Receivers, Fourier transforms, Defect detection, Ultrasonics, Sensors, Acoustics, Statistical analysis

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Proceedings Article | 22 April 2020 Paper

Composite elastic property identification through guided wave inversion and damage detection by data-driven process

Ranting Cui, Guillermo Azuara, Francesco Lanza di Scalea

Proceedings Volume 11381, 113810I (2020) https://doi.org/10.1117/12.2558154

KEYWORDS: Composites, Sensors, Waveguides, Data modeling, Dispersion, Wave propagation, Phase velocity, Data acquisition, Damage detection

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Proceedings Article | 1 April 2019 Presentation + Paper

Guided wave techniques for damage detection and property characterization in composite aerospace structures

Margherita Capriotti, Ranting Cui, Francesco Lanza di Scalea

Proceedings Volume 10972, 1097204 (2019) https://doi.org/10.1117/12.2514072

KEYWORDS: Composites, Waveguides, Dispersion, Damage detection, Ultrasonics, Aerospace engineering, Wave propagation, Algorithms, Phase velocity, Inspection

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Proceedings Article | 1 April 2019 Presentation + Paper

Improved global-local model to predict guided-wave scattering patterns from discontinuities in complex parts

Antonino Spada, Margherita Capriotti, Ranting Cui, Francesco Lanza di Scalea

Proceedings Volume 10972, 109720M (2019) https://doi.org/10.1117/12.2514082

KEYWORDS: Scattering, Waveguides, Wave propagation, Composites, Head, Skin, Chemical elements, Ultrasonics, Inspection, Dispersion

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Proceedings Article | 27 March 2019 Presentation + Paper

Passive extraction of Green's function of solids and application to high-speed rail inspection

Albert Liang, Simone Sternini, Margherita Capriotti, Peter (Xuan) Zhu, Francesco Lanza di Scalea, Robert Wilson

Proceedings Volume 10970, 109700R (2019) https://doi.org/10.1117/12.2514074

KEYWORDS: Inspection, Receivers, Sensors, Prototyping, Signal detection, Acoustics, Ultrasonics, Solids, Interference (communication), Defect detection

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The identification of the acoustic Green’s function (or, equivalently, the dynamic transfer function) of a medium is of interest to many fields, including structural testing, inspections and health monitoring. This paper will focus on the passive identification utilizing pairs of receivers and exploiting dynamic excitations that occur naturally in the structure. Several opportunities for this passive extraction exist, including: bridges under traffic excitation, buildings under seismic excitation, oceans under natural flows, and railroad tracks under train wheels excitations, among many others. A special signal processing approach is proposed to ensure that the Green’s function (or the transfer function) identification occurs without the influence of the random and generally unknown excitation and without the influence of uncorrelated noise that may affect the receivers. In particular, a special version of Welch’s periodogram technique is proposed where averages of the two outputs are taken both for the same time segments (“intra-segment” averaging) and for different time segments (“inter-segment” averaging) in order to eliminate the influence of noise at both receivers, in addition to eliminating the excitation source spectrum. It will be demonstrated, both analytically and experimentally, that this special signal processing is optimum for robust dual-output passive transfer function estimation. This technique will be then applied to the high-speed inspection of rail tracks by passive extraction of the rail acoustic Green’s function in the ultrasonic regime from the natural train wheel excitations. In this application, the dynamic outputs are collected by pairs of non-contact air-coupled receivers that have a 2-in stand-off from the rail surface. Changes in the passively-extracted Green’s function are then related to the presence of internal flaws (e.g. cracks) in the rail. Previously. a prototype based on this concept has been built and tested at the Transportation Technology Center (TTC) in Pueblo, Colorado, at speeds up to 80 mph. These speeds are unprecedented in the field of rail inspections, that are today carried out at ~30 mph at most by specialized test vehicles. This paper presents preliminary results from a second field test performed in the Fall of 2018 at TTC using a revised prototype design an speeds up to 40 mph. The successful development of this technique would revolutionize many aspects of rail maintenance by, for example, allowing regular trains to perform the inspections with no traffic disruption and great opportunity for redundancy due to the multiple train passes on the same track.

Proceedings Article | 27 March 2018 Presentation + Paper

High-speed non-contact ultrasound system for rail track integrity evaluation

Francesco Lanza di Scalea, Xuan Zhu, Margherita Capriotti, Albert Liang, Stefano Mariani, Simone Sternini, Robert Wilson

Proceedings Volume 10600, 106000J (2018) https://doi.org/10.1117/12.2295634

KEYWORDS: Inspection, Defect detection, Prototyping, Structural health monitoring, Ultrasonics, Receivers, Sensors, Acoustics, Deconvolution, Ultrasonography

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Ultrasonic rail inspection is the most commonly implemented method for detecting internal rail defects. While the conventional ultrasound wheel probe has gained its popularity within rail maintenance community, it suffers from the limited test speeds (25 mph at most). This paper presents the state-of-the-art developments in ultrasonic rail inspection technique that utilizes non-contact receivers and no active transmitters. The transfer function between two points of the rail is reconstructed by deconvolutions of multiple pairs of receivers that sense the acoustics naturally excited in the rail by the running wheels. The deconvolution process eliminates the random effect of the excitation to reconstruct a stable acoustic transfer function of the rail. A fixed bulk delay and frequency selection technique are introduced to facilitate the power spectral density estimation for robust transfer function reconstruction. A multivariate analysis based on selected features extracted from various frequency bands is conducted on the signals recorded by multiple sensor pairs respectively. Furthermore, damage index traces based on data from different sensor pairs provide system redundancy for improved reliability with the voting logic for damage detection. The proposed approach lends itself to extremely high testing speeds (as fast as the service train speed, e.g. 60 mph and above), that would enable the real-time evaluation of rail track integrity at train operational speeds. A prototype based on this passive-only inspection idea has been constructed and tested with the DOTX216 testing vehicle of the Federal Railroad Administration at the Transportation Technology Center (TTC) in Pueblo, CO in September 2016. Test runs were made at various speeds from 25 mph to 80 mph (the maximum speed allowed on the test track). The results show the feasibility of stable reconstruction of the transfer function from the random wheel excitation, as well as the detection of joints and welds present in the track. Some tests were also conducted on TTC Defect Farm showing the potential for defect defection.

Proceedings Article | 19 April 2017 Presentation + Paper

Development of an ultrasonic nondestructive inspection method for impact damage detection in composite aircraft structures

M. Capriotti, H. Kim, F. Lanza di Scalea

Proceedings Volume 10169, 101691O (2017) https://doi.org/10.1117/12.2258669

KEYWORDS: Skin, Wave propagation, Statistical analysis, Nondestructive evaluation, Ultrasonics, Inspection, Composites, Aircraft structures, Structural health monitoring, Aerospace engineering, Waveguides, Transducers, Damage detection

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Proceedings Article | 11 April 2017 Presentation + Paper

Thermal stress characterization using the electro-mechanical impedance method

Xuan Zhu, Francesco Lanza di Scalea, Mahmood Fateh

Proceedings Volume 10164, 1016407 (2017) https://doi.org/10.1117/12.2258155

KEYWORDS: Nondestructive evaluation, Structural health monitoring, Transducers, Feature extraction, Principal component analysis, Capacitance, Dielectrics, Environmental sensing, Ceramics

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Proceedings Article | 5 April 2017 Presentation + Paper

Ultrasonic damage imaging of structural components with bulk and guided waves using match coefficients

S. Sternini, A. Quattrocchi, R. Montanini, F. Lanza di Scalea

Proceedings Volume 10170, 101701B (2017) https://doi.org/10.1117/12.2260110

KEYWORDS: Ultrasonics, Structural health monitoring, Structural imaging, Nondestructive evaluation, Acoustics, Wave propagation, Transducers, Ferroelectric materials, Lithium

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Proceedings Article | 20 April 2016 Presentation + Paper

Extraction of thermal Green's function using diffuse fields: a passive approach applied to thermography

Margherita Capriotti, Simone Sternini, Francesco Lanza di Scalea, Stefano Mariani

Proceedings Volume 9803, 98030U (2016) https://doi.org/10.1117/12.2218998

KEYWORDS: Thermography, Nondestructive evaluation, Defect detection, Signal processing, Structural health monitoring, Acoustics, Image resolution, Interference (communication), Diffusion, Temperature metrology, Infrared cameras

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Proceedings Article | 20 April 2016 Presentation + Paper

Thermal stress measurement in continuous welded rails using the hole-drilling method

Xuan Zhu, Francesco Lanza di Scalea, Mahmood Fateh

Proceedings Volume 9803, 98031C (2016) https://doi.org/10.1117/12.2218664

KEYWORDS: Finite element methods, 3D modeling, Safety, Calibration, Computer simulations, Data modeling, Error analysis, Statistical analysis, Temperature metrology, Thermal modeling, Chlorine, Statistical modeling

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Proceedings Article | 15 April 2016 Presentation + Paper

Thermal stress characterization using the impedance-based structural health monitoring system

Xuan Zhu, Francesco Lanza di Scalea, Mahmood Fateh

Proceedings Volume 9799, 97990B (2016) https://doi.org/10.1117/12.2218544

KEYWORDS: Structural health monitoring, Thermal effects, Analytical research, Piezoelectric effects, Ferroelectric materials, Dielectrics, Ceramics, Capacitance, Structural dynamics, Sensors, Actuators

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Proceedings Article | 8 April 2016 Paper

Defect detection performance of the UCSD non-contact air-coupled ultrasonic guided wave inspection of rails prototype

Stefano Mariani, Thompson Nguyen, Simone Sternini, Francesco Lanza di Scalea, Mahmood Fateh, Robert Wilson

Proceedings Volume 9804, 98040N (2016) https://doi.org/10.1117/12.2218989

KEYWORDS: Signal to noise ratio, Ultrasonics, Defect detection, Waveguides, Inspection, Prototyping, Signal detection, Statistical analysis, Wave sensors, Sensors, Head, Receivers, Transducers

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Proceedings Article | 1 April 2016 Presentation + Paper

Ultrasonic imaging using wave structure-based weights and global matched coefficients

Simone Sternini, Thompson Vu Nguyen, Francesco Lanza di Scalea

Proceedings Volume 9805, 980527 (2016) https://doi.org/10.1117/12.2218931

KEYWORDS: Ultrasonography, Tomography, Imaging arrays, Ultrasonics, Solids, Defect detection, Structural health monitoring, Nondestructive evaluation, Stereolithography, Reflectors, Receivers, Wave propagation, Aluminum, Transmitters

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SPIE Journal Paper | 28 December 2015 Open Access

Special Section Guest Editorial:Structural Health Monitoring: Use of Guided Waves and/or Nonlinear Acoustic Techniques

Tribikram Kundu, Francesco Lanza di Scalea, Hoon Sohn

OE, Vol. 55, Issue 01, 011001, (December 2015) https://doi.org/10.1117/12.10.1117/1.OE.55.1.011001

KEYWORDS: Acoustics, Waveguides, Structural health monitoring, Nondestructive evaluation, Optical engineering, Civil engineering, Aerospace engineering, Ultrasonics, Smart structures, Structural engineering

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Proceedings Article | 3 April 2015 Paper

Non-contact ultrasonic guided wave inspection of rails: field test results and updates

Stefano Mariani, Thompson Nguyen, Xuan Zhu, Francesco Lanza di Scalea, Mahmood Fateh

Proceedings Volume 9435, 94351O (2015) https://doi.org/10.1117/12.2083774

KEYWORDS: Head, Prototyping, Ultrasonics, Waveguides, Inspection, Defect detection, Receivers, Transducers, Lithium, Sensors

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Proceedings Article | 23 March 2015 Paper

Applications of matched field processing to damage detection in composite wind turbine blades

Jeffery Tippmann, Francesco Lanza di Scalea

Proceedings Volume 9438, 94380H (2015) https://doi.org/10.1117/12.2084461

KEYWORDS: Sensors, Damage detection, Imaging arrays, Composites, Inspection, Acoustics, Array processing, Oceanography, Structural health monitoring, Wind turbine technology

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Proceedings Article | 28 March 2014 Paper

Temperature and axial stress effects in electromechanical-impedance-method-based structural health monitoring

Xuan Zhu, Francesco Lanza Di Scalea, Mahmood Fateh

Proceedings Volume 9064, 90641O (2014) https://doi.org/10.1117/12.2045111

KEYWORDS: Ferroelectric materials, Electromagnetic coupling, Structural health monitoring, Actuators, Temperature metrology, Structural dynamics, Analytical research, Semiconducting wafers, Adhesives, Thermal modeling

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Proceedings Article | 9 March 2014 Paper

Experiments on a wind turbine blade testing an indication for damage using the causal and anti-causal Green's function reconstructed from a diffuse field

Jeffery Tippmann, Francesco Lanza di Scalea

Proceedings Volume 9064, 90641I (2014) https://doi.org/10.1117/12.2046417

KEYWORDS: Sensors, Structural health monitoring, Composites, Correlation function, Passive sensors, Interference (communication), Signal attenuation, Damage detection, Transducers, Wind turbine technology

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Proceedings Article | 9 March 2014 Paper

Non-contact ultrasonic guided wave inspections of rails

Thompson Nguyen, Stefano Mariani, Francesco Lanza di Scalea

Proceedings Volume 9064, 90640V (2014) https://doi.org/10.1117/12.2044105

KEYWORDS: Prototyping, Transducers, Sensors, Waveguides, Defect detection, Receivers, Computer simulations, Ultrasonics, Inspection, Signal generators

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Proceedings Article | 9 March 2014 Paper

Damage location by ultrasonic Lamb waves and piezoelectric rosettes

Piotr Kijanka, Arun Manohar, Francesco Lanza di Scalea, Wieslaw Staszewski

Proceedings Volume 9064, 906422 (2014) https://doi.org/10.1117/12.2044150

KEYWORDS: Sensors, Microsoft Foundation Class Library, Wave propagation, Transducers, Ferroelectric materials, Actuators, Ultrasonics, Waveguides, Composites, Aluminum

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Proceedings Article | 8 March 2014 Paper

Field testing of prototype systems for the non-destructive measurement of the neutral temperature of railroad tracks

Robert Phillips, Francesco Lanza di Scalea, Claudio Nucera, Mahmood Fateh, John Choros

Proceedings Volume 9061, 90610J (2014) https://doi.org/10.1117/12.2045081

KEYWORDS: Sensors, Phase modulation, Prototyping, Temperature metrology, Head, Waveguides, Ultrasonics, Nondestructive evaluation, Wave propagation, Safety

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Proceedings Article | 19 April 2013 Paper

Vibration control experiments using piezoelectric transducers on a wind turbine blade

Jeffery Tippmann, Francesco Lanza di Scalea

Proceedings Volume 8692, 86921H (2013) https://doi.org/10.1117/12.2009534

KEYWORDS: Transducers, Phase velocity, Vibration control, Skin, Microsoft Foundation Class Library, Dispersion, Wave propagation, Composites, Wind energy, Wind turbine technology

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Proceedings Article | 19 April 2013 Paper

Estimation of defect parameters in quasi-isotropic composite materials using infrared thermography

Arun Manohar, Francesco Lanza di Scalea

Proceedings Volume 8692, 86922I (2013) https://doi.org/10.1117/12.2009779

KEYWORDS: Thermal modeling, Composites, Thermography, 3D modeling, Process modeling, Wind energy, Diffusion, Aerospace engineering, Infrared cameras, Sensors

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Proceedings Article | 19 April 2013 Paper

Non-contact ultrasonic guided wave inspection of rails

Stefano Mariani, Thompson Nguyen, Robert Ronald Phillips, Piotr Kijanka, Francesco Lanza di Scalea, Wieslaw Jerzy Staszewski

Proceedings Volume 8692, 86921L (2013) https://doi.org/10.1117/12.2009179

KEYWORDS: Ultrasonics, Waveguides, Prototyping, Defect detection, Inspection, Statistical analysis, Transducers, Head, Electronic filtering, Signal to noise ratio

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Proceedings Article | 17 April 2013 Paper

Axial stress determination using Impedance-based method and its application on the thermal stresses measurement in continuous welded rail

Xuan Zhu, Robert Phillips, Francesco Lanza di Scalea

Proceedings Volume 8695, 86951N (2013) https://doi.org/10.1117/12.2009305

KEYWORDS: Electromagnetic coupling, Ferroelectric materials, Temperature metrology, Transducers, Structural health monitoring, Thermal effects, Nondestructive evaluation, Defect detection, Semiconducting wafers, Data modeling

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Proceedings Article | 17 April 2013 Paper

Nonlinear guided waves for neutral temperature measurement in continuous welded rails: results from laboratory and field tests

Claudio Nucera, Robert Phillips, Peter Zhu, Stefano Mariani, Francesco Lanza di Scalea, Mahmood Fateh, Gary Carr

Proceedings Volume 8695, 869528 (2013) https://doi.org/10.1117/12.2009763

KEYWORDS: Waveguides, Prototyping, Temperature metrology, Ultrasonics, Wave propagation, Thermal modeling, Dispersion, Liquid phase epitaxy, Structural health monitoring, Head

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Proceedings Article | 17 April 2013 Paper

Nonlinear guided waves in solids under constrained thermal expansion

Claudio Nucera, Francesco Lanza di Scalea

Proceedings Volume 8695, 86950P (2013) https://doi.org/10.1117/12.2009793

KEYWORDS: Wave propagation, Solids, Temperature metrology, Waveguides, Particles, Ultrasonics, Transducers, Thermal modeling, Harmonic generation, Chemical species

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Proceedings Article | 3 April 2012 Paper

Wind turbine inspection tests at UCSD

Jeffery Tippmann, Arun Manohar, Francesco Lanza di Scalea

Proceedings Volume 8345, 83451Q (2012) https://doi.org/10.1117/12.915323

KEYWORDS: Skin, Adhesives, Inspection, Thermography, Composites, Nondestructive evaluation, Manufacturing, Wind energy, Epoxies, Wind turbine technology

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Proceedings Article | 3 April 2012 Paper

Localization of defects in wind turbine blades and defect depth estimation using infrared thermography

Arun Manohar, Jeffery Tippmann, Francesco Lanza di Scalea

Proceedings Volume 8345, 83451O (2012) https://doi.org/10.1117/12.915256

KEYWORDS: Thermography, 3D modeling, Thermal modeling, Defect detection, Composites, Wind energy, Diffusion, Bessel functions, Nondestructive evaluation, Wind turbine technology

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Proceedings Article | 15 April 2011 Paper

Monitoring thermal stresses and incipient buckling of continuous-welded rails: results from the UCSD/BNSF/FRA large-scale laboratory test track

Robert Phillips, Claudio Nucera, Stefano Coccia, Francesco Lanza di Scalea, Ivan Bartoli, Mahmood Fateh, Gary Carr

Proceedings Volume 7981, 79813T (2011) https://doi.org/10.1117/12.880241

KEYWORDS: Ultrasonics, Waveguides, Temperature metrology, Prototyping, Switches, Infrared cameras, Head, Roads, Safety, Velocity measurements

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Proceedings Article | 14 April 2011 Paper

Health monitoring of prestressing tendons in post-tensioned concrete structures

Salvatore Salamone, Ivan Bartoli, Claudio Nucera, Robert Phillips, Francesco Lanza di Scalea

Proceedings Volume 7981, 798122 (2011) https://doi.org/10.1117/12.877357

KEYWORDS: Ultrasonics, Sensors, Waveguides, Acoustic emission, Picosecond phenomena, Interfaces, Bridges, Defect detection, Wave propagation, Signal processing

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Proceedings Article | 14 April 2011 Paper

Wavelet aided multivariate outlier analysis to enhance defect contrast in thermal images

Arun Manohar, Francesco Lanza di Scalea

Proceedings Volume 7981, 79810V (2011) https://doi.org/10.1117/12.880173

KEYWORDS: Composites, Signal processing, Wavelets, Thermography, Electronic filtering, Filtering (signal processing), Nondestructive evaluation, Signal to noise ratio, Defect detection, Thermal modeling

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Proceedings Article | 14 April 2011 Paper

UCSD/FRA non-contact ultrasonic guided-wave system for rail inspection: an update

Stefano Coccia, Robert Phillips, Claudio Nucera, Ivan Bartoli, Salvatore Salamone, Francesco Lanza di Scalea, Mahmood Fateh, Gary Carr

Proceedings Volume 7981, 798113 (2011) https://doi.org/10.1117/12.880238

KEYWORDS: Inspection, Ultrasonics, Defect detection, Head, Prototyping, Safety, Reliability, Waveguides, Statistical analysis, Molybdenum

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Proceedings Article | 13 April 2011 Paper

Nonlinear ultrasonic guided waves for prestress level monitoring in prestressing strands for post-tensioned concrete structures

Claudio Nucera, Francesco Lanza di Scalea

Proceedings Volume 7981, 79810L (2011) https://doi.org/10.1117/12.880291

KEYWORDS: Ultrasonics, Transducers, Wave propagation, Waveguides, Interfaces, Finite element methods, Chemical elements, 3D modeling, Bridges, Signal detection

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Proceedings Article | 1 April 2011 Paper

Validation of the piezoelectric rosette technique for locating impacts in complex aerospace panels

Salvatore Salamone, Ivan Bartoli, Jennifer Rhymer, Francesco Lanza di Scalea, Hyonny Kim

Proceedings Volume 7984, 79841E (2011) https://doi.org/10.1117/12.880293

KEYWORDS: Composites, Sensors, Microsoft Foundation Class Library, Aluminum, Wave propagation, Aerospace engineering, Transducers, Acoustic emission, Spherical lenses, Fiber Bragg gratings

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Proceedings Article | 1 April 2011 Paper

Impact force identification in aerospace panels by an inverse ultrasonic guided wave problem

Ivan Bartoli, Salvatore Salamone, Francesco Lanza di Scalea, Jennifer Rhymer, Hyonny Kim

Proceedings Volume 7984, 79841F (2011) https://doi.org/10.1117/12.880294

KEYWORDS: Composites, Microsoft Foundation Class Library, Sensors, Aluminum, Waveguides, Aerospace engineering, Ultrasonics, Wave propagation, Finite element methods, Optical spheres

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Proceedings Article | 9 April 2010 Paper

Stress dependence of guided waves in rails

Ivan Bartoli, Stefano Coccia, Robert Phillips, Ankit Srivastava, Francesco Lanza di Scalea, Salvatore Salamone, Mahmood Fateh, Gary Carr

Proceedings Volume 7650, 765021 (2010) https://doi.org/10.1117/12.847410

KEYWORDS: Waveguides, Wave propagation, Dispersion, Prototyping, Motion measurement, Finite element methods, Phase velocity, Ultrasonics, Fourier transforms, 3D modeling

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Proceedings Article | 9 April 2010 Paper

Impact force identification on isotropic and composite panels

Ivan Bartoli, Salvatore Salamone, Marzia Mezzanotte, Francesco Lanza di Scalea, Hyonny Kim, Jennifer Rhymer

Proceedings Volume 7650, 765007 (2010) https://doi.org/10.1117/12.847041

KEYWORDS: Composites, Microsoft Foundation Class Library, Sensors, Aluminum, Finite element methods, Wave propagation, Inverse problems, Chemical elements, Signal processing, Optical spheres

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Proceedings Article | 1 April 2010 Paper

Object identification by multispectral fusion and Haar classification

Arun Manohar, Francesco Lanza di Scalea

Proceedings Volume 7647, 76471Q (2010) https://doi.org/10.1117/12.847357

KEYWORDS: Image fusion, Wavelets, Wavelet transforms, Visible radiation, Infrared imaging, Infrared radiation, Thermography, Image processing, Image resolution, Multispectral imaging

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Proceedings Article | 8 April 2009 Paper

On the existence of antisymmetric or symmetric Lamb waves at non-linear higher harmonics

A. Srivastava, F. Lanza di Scalea

Proceedings Volume 7295, 729519 (2009) https://doi.org/10.1117/12.815448

KEYWORDS: Waveguides, Wavelets, Transducers, Microsoft Foundation Class Library, Wave plates, Wave propagation, Americium, Time-frequency analysis, Particles, Samarium

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Proceedings Article | 8 April 2009 Paper

Temperature effects in Lamb-wave structural health monitoring systems

Salvatore Salamone, Francesco Lanza di Scalea, Ivan Bartoli

Proceedings Volume 7295, 72950O (2009) https://doi.org/10.1117/12.815443

KEYWORDS: Microsoft Foundation Class Library, Actuators, Sensors, Wave plates, Temperature metrology, Aluminum, Composites, Transducers, Structural health monitoring, Adhesives

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Proceedings Article | 30 March 2009 Paper

Modeling high-frequency wave propagation in rail tracks for crack detection

Stefano Coccia, Ivan Bartoli, Francesco Lanza di Scalea, Mahmood Fateh, Gary Carr

Proceedings Volume 7292, 72921W (2009) https://doi.org/10.1117/12.815470

KEYWORDS: Wave propagation, Head, Waveguides, Dispersion, Defect detection, Signal attenuation, Ultrasonics, Phase velocity, Inspection, Chemical elements

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Proceedings Article | 30 March 2009 Paper

Nonlinear ultrasonic guided waves for stress monitoring in prestressing tendons for post-tensioned concrete structures

Ivan Bartoli, Claudio Nucera, Ankit Srivastava, Salvatore Salamone, Robert Phillips, Francesco Lanza di Scalea, Stefano Coccia, Charles Sikorsky

Proceedings Volume 7292, 729220 (2009) https://doi.org/10.1117/12.815614

KEYWORDS: Ultrasonics, Waveguides, Transducers, Picosecond phenomena, Defect detection, Wave propagation, Interfaces, Signal detection, Bridges, Sensors

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Proceedings Article | 10 April 2008 Paper

Passive-only wave-based structural health monitoring from ambient noise

Karim Sabra, Adelaide Duroux, Ankit Srivastava, Francesco Lanza di Scalea, Ivan Bartoli

Proceedings Volume 6935, 693508 (2008) https://doi.org/10.1117/12.775636

KEYWORDS: Sensors, Structural health monitoring, Waveguides, Wave plates, Aluminum, Acoustics, Passive sensors, Ultrasonics, Random lasers, Nondestructive evaluation

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Proceedings Article | 10 April 2008 Paper

Wave propagation models for quantitative defect detection by ultrasonic methods

Ankit Srivastava, Ivan Bartoli, Stefano Coccia, Francesco Lanza di Scalea

Proceedings Volume 6935, 69350S (2008) https://doi.org/10.1117/12.776010

KEYWORDS: Waveguides, Composites, Finite element methods, Scattering, Chemical elements, Adaptive optics, Ultrasonics, Aluminum, Wave propagation, Defect detection

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Proceedings Article | 8 April 2008 Paper

Load monitoring in multiwire strands by interwire ultrasonic measurements

Ivan Bartoli, Robert Phillips, Francesco Lanza di Scalea, Salvatore Salamone, Stefano Coccia, Charles Sikorsky

Proceedings Volume 6932, 693209 (2008) https://doi.org/10.1117/12.775934

KEYWORDS: Waveguides, Ultrasonics, Sensors, Wave propagation, Ferroelectric materials, Picosecond phenomena, Defect detection, Actuators, Dispersion, Ultrasonography

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Proceedings Article | 19 May 2007 Paper

SAFE modeling of waves for the structural health monitoring of prestressing tendons

Ivan Bartoli, Alessandro Marzani, Francesco Lanza di Scalea, Piervincenzo Rizzo, Erasmo Viola, Elisa Sorrivi, Robert Phillips

Proceedings Volume 6532, 65320D (2007) https://doi.org/10.1117/12.715442

KEYWORDS: Waveguides, Signal to noise ratio, Ultrasonics, Defect detection, Discrete wavelet transforms, Signal detection, Sensors, Wavelets, Interference (communication), Wave propagation

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Proceedings Article | 6 April 2007 Paper

Macro-fiber composite piezoelectric rosettes for acoustic source location in complex structures

Howard Matt, Francesco Lanza di Scalea

Proceedings Volume 6529, 65290Q (2007) https://doi.org/10.1117/12.715445

KEYWORDS: Sensors, Microsoft Foundation Class Library, Composites, Transducers, Wave propagation, Aluminum, Wave plates, Ultrasonics, Ferroelectric materials, Acoustics

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Proceedings Article | 11 April 2006 Paper

Unsupervised learning algorithm for high-speed defect detection in rails by laser/air-coupled non-contact ultrasonic testing

Piervincenzo Rizzo, Stefano Coccia, Francesco Lanza di Scalea, Ivan Bartoli, Mahmood Fateh

Proceedings Volume 6174, 61742G (2006) https://doi.org/10.1117/12.643892

KEYWORDS: Ultrasonics, Defect detection, Wavelets, Signal detection, Feature extraction, Discrete wavelet transforms, Interference (communication), Head, Sensors, Detection and tracking algorithms

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Proceedings Article | 11 April 2006 Paper

Ultrasonic guided-wave monitoring of composite bonded joints using macro fiber composite transducers

Howard Matt, Ivan Bartoli, Stefano Coccia, Francesco Lanza di Scalea, Joseph Oliver, John Kosmatka, Gyuhae Park, Charles Farrar

Proceedings Volume 6174, 61742D (2006) https://doi.org/10.1117/12.640036

KEYWORDS: Microsoft Foundation Class Library, Sensors, Transducers, Waveguides, Ultrasonics, Composites, Wave propagation, Skin, Unmanned aerial vehicles, Adhesives

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Proceedings Article | 5 April 2006 Paper

Self-diagnosis and validation of active sensors used for structural health monitoring

Gyuhae Park, Charles Farrar, Francesco Lanza di Scalea, Stefano Coccia

Proceedings Volume 6173, 61731N (2006) https://doi.org/10.1117/12.658813

KEYWORDS: Ferroelectric materials, Sensors, Transducers, Structural health monitoring, Wave propagation, Diagnostics, Microsoft Foundation Class Library, Aluminum, Active sensors, Actuators

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Proceedings Article | 27 March 2006 Paper

Damage detection in multi-wire strands by discrete wavelet-based outlier analysis and embedded guided ultrasonic waves

Piervincenzo Rizzo, Elisa Sorrivi, Francesco Lanza di Scalea, Erasmo Viola

Proceedings Volume 6166, 61660U (2006) https://doi.org/10.1117/12.655362

KEYWORDS: Ultrasonics, Discrete wavelet transforms, Signal to noise ratio, Waveguides, Wavelets, Damage detection, Statistical analysis, Interference (communication), Feature extraction, Defect detection

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Proceedings Article | 15 March 2006 Paper

Modeling wave propagation in damped waveguides of arbitrary cross-section

Ivan Bartoli, Alessandro Marzani, Howard Matt, Francesco Lanza di Scalea, Erasmo Viola

Proceedings Volume 6177, 61770A (2006) https://doi.org/10.1117/12.640032

KEYWORDS: Waveguides, Wave propagation, Signal attenuation, Chemical elements, Phase velocity, Dispersion, Composites, Nondestructive evaluation, Structural health monitoring, Finite element methods

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Proceedings Article | 17 May 2005 Paper

Wavelet coefficient analysis for the quantitative determination of damage in tendons and cables

Piervincenzo Rizzo, Francesco Lanza di Scalea

Proceedings Volume 5765, (2005) https://doi.org/10.1117/12.598304

KEYWORDS: Wavelets, Discrete wavelet transforms, Ultrasonics, Feature extraction, Signal detection, Defect detection, Receivers, Signal processing, Transducers, Bridges

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Proceedings Article | 17 May 2005 Paper

A guided-wave system for monitoring the wing skin-to-spar bond in unmanned aerial vehicles

Howard Matt, Ivan Bartoli, Francesco Lanza di Scalea, Alessandro Marzani, Stefano Coccia, Joseph Oliver, John Kosmatka, Piervincenzo Rizzo, Gaetano Restivo

Proceedings Volume 5765, (2005) https://doi.org/10.1117/12.599061

KEYWORDS: Composites, Waveguides, Wavelets, Skin, Unmanned aerial vehicles, Wave propagation, Ultrasonics, Adhesives, Epoxies, Signal attenuation

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Proceedings Article | 9 May 2005 Paper

High-speed defect detection in rails by non-contact guided ultrasonic testing

Piervincenzo Rizzo, Ivan Bartoli, Francesco Lanza di Scalea, Stefano Coccia, Mahmood Fateh

Proceedings Volume 5768, (2005) https://doi.org/10.1117/12.599060

KEYWORDS: Sensors, Inspection, Head, Ultrasonics, Discrete wavelet transforms, Defect detection, Signal processing, Waveguides, Wavelets, Reflection

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Proceedings Article | 29 July 2004 Paper

Discrete wavelet transform to improve guided-wave-based health monitoring of tendons and cables

Piervincenzo Rizzo, Francesco Lanza di Scalea

Proceedings Volume 5391, (2004) https://doi.org/10.1117/12.539847

KEYWORDS: Discrete wavelet transforms, Wavelets, Signal detection, Ultrasonics, Defect detection, Signal processing, Signal to noise ratio, Waveguides, Signal attenuation, Inspection

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Proceedings Article | 27 July 2004 Paper

Mobile acoustic system for the detection of surface-breaking cracks in pavement

Alessandro Marzani, Piervincenzo Rizzo, Francesco Lanza di Scalea, Gianmario Benzoni

Proceedings Volume 5384, (2004) https://doi.org/10.1117/12.539991

KEYWORDS: Wave propagation, Inspection, Signal detection, Sensors, Acoustics, Continuous wavelet transforms, Signal attenuation, Waveguides, Nondestructive evaluation, Defect detection

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Proceedings Article | 21 July 2004 Paper

Propagation of ultrasonic guided waves in lap-shear adhesive joints

Francesco Lanza di Scalea, Piervincenzo Rizzo, Alessandro Marzani

Proceedings Volume 5394, (2004) https://doi.org/10.1117/12.539982

KEYWORDS: Ultrasonics, Epoxies, Wave propagation, Waveguides, Aluminum, Adhesives, Interfaces, Inspection, Phase velocity, Wavelet transforms

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Proceedings Article | 18 August 2003 Paper

Ultrasonic characterization of steel rods for health monitoring of civil structures

Piervincenzo Rizzo, Michael Palmer, Francesco Lanza di Scalea

Proceedings Volume 5057, (2003) https://doi.org/10.1117/12.482384

KEYWORDS: Ultrasonics, Signal attenuation, Wave propagation, Waveguides, Dispersion, Ultrasonography, Time-frequency analysis, Civil engineering, Wavelet transforms, Transducers

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Proceedings Article | 18 August 2003 Paper

Health monitoring of railroad tracks by wavelet analysis

John McNamara, Michael Palmer, Francesco Lanza di Scalea

Proceedings Volume 5057, (2003) https://doi.org/10.1117/12.482689

KEYWORDS: Wavelets, Inspection, Head, Continuous wavelet transforms, Time-frequency analysis, Ultrasonics, Signal to noise ratio, Fourier transforms, Defect detection, Signal attenuation

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Proceedings Article | 28 June 2002 Paper

Monitoring steel strands via ultrasonic measurements

Piervincenzo Rizzo, Francesco Lanza di Scalea

Proceedings Volume 4696, (2002) https://doi.org/10.1117/12.472578

KEYWORDS: Waveguides, Signal attenuation, Sensors, Magnetic sensors, Wave propagation, Defect detection, Receivers, Ultrasonics, Transmitters, Magnetism

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Proceedings Article | 18 June 2002 Paper

Guided-wave ultrasonics for NDE of aging aircraft components

Francesco di Scalea, Joshua Robinson, Daniel Tuzzeo, Massimo Bonomo

Proceedings Volume 4704, (2002) https://doi.org/10.1117/12.470717

KEYWORDS: Interfaces, Inspection, Ultrasonics, Waveguides, Wave propagation, Transducers, Adhesives, Wave plates, Aluminum, Photoelasticity

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Proceedings Article | 11 June 2002 Paper

Advances in health monitoring of railroad tracks

John McNamara, Francesco Lanza di Scalea

Proceedings Volume 4702, (2002) https://doi.org/10.1117/12.469884

KEYWORDS: Inspection, Head, Ultrasonics, Fourier transforms, Transducers, Defect detection, Signal detection, Amplifiers, Acoustics, Signal attenuation

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Proceedings Article | 3 August 2001 Paper

Acoustic emission monitoring of CFRP cables for cable-stayed bridges

Piervincenzo Rizzo, Francesco Lanza di Scalea

Proceedings Volume 4337, (2001) https://doi.org/10.1117/12.435585

KEYWORDS: Acoustics, Signal attenuation, Transducers, Bridges, Signal detection, Fiber reinforced polymers, Acoustic emission, Manufacturing, Composites, Waveguides

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Proceedings Article | 20 April 2000 Paper

I-5/Gilman advanced technology bridge project

Francesco Lanza di Scalea, Vistasp Karbhari, Frieder Seible

Proceedings Volume 3988, (2000) https://doi.org/10.1117/12.383138

KEYWORDS: Bridges, Composites, Sensors, Fourier transforms, Inspection, Fiber optics, Carbon, Fiber Bragg gratings, Lanthanum, Fiber optics sensors

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Showing 5 of 77 publications

Conference Committee Involvement (37)

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

Health Monitoring of Structural and Biological Systems XIII

4 March 2019 | Denver, Colorado, United States

Health Monitoring of Structural and Biological Systems XII

5 March 2018 | Denver, Colorado, United States