Prof. Massimo P. Ruzzene Profile

Prof. Massimo P. Ruzzene

at Univ of Colorado Boulder

SPIE Involvement:

Author

Publications (71)

Proceedings Article | 15 March 2023 Presentation + Paper

Vibration localization in elastic hyperbolic lattices

Nicholas Patino, Curtis Rasmussen, Massimo Ruzzene

Proceedings Volume 12431, 1243102 (2023) https://doi.org/10.1117/12.2661153

KEYWORDS: Elasticity, Vibration, Mode shapes, Wave propagation, Transducers, Reflection, Numerical simulations

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Proceedings Article | 19 April 2022 Presentation + Paper

Ultrasonic inspection of additively manufactured metallic components using bulk and guided waves

A. Allam, O. Alfahmi, H. Patel, C. Sugino, M. Harding, M. Ruzzene, A. Erturk

Proceedings Volume 12048, 120480M (2022) https://doi.org/10.1117/12.2614701

KEYWORDS: Ultrasonics, Additive manufacturing, Waveguides, Finite element methods, Defect detection, Phased arrays, Wave propagation, Optical microscopy, Manufacturing, Velocity measurements

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Proceedings Article | 19 April 2022 Presentation + Paper

Manipulating elastic waves via engineered spatial curvature profiles

Matteo Mazzotti, Mohit Gupta, Christian Santangelo, Massimo Ruzzene

Proceedings Volume 12048, 1204804 (2022) https://doi.org/10.1117/12.2612573

KEYWORDS: Refractive index, Waveguides, GRIN lenses, Wave propagation, Modulation, Lenses, Planar waveguides, Geometrical optics, Numerical analysis, Gradient-index optics

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Proceedings Article | 18 April 2022 Presentation

Fundamental mechanisms of distributed bleed flow control over an aeroelastic wing

Luca De Beni, Gabriel Peyredieu Du Charlat, Ari Glezer, Massimo Ruzzene

Proceedings Volume PC12043, (2022) https://doi.org/10.1117/12.2612434

KEYWORDS: 3D modeling, Aerodynamics, Wind measurement, System identification, Performance modeling, Motion models, Feedback loops, Control systems, Actuators

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Proceedings Article | 18 April 2022 Presentation

Topological valley states in elastic quasicrystals

Danilo Beli, Matheus I. Rosa, Carlos De Marqui, Massimo Ruzzene

Proceedings Volume PC12043, (2022) https://doi.org/10.1117/12.2614619

KEYWORDS: Interfaces, Wave propagation

Proceedings Article | 18 April 2022 Presentation

Topological phenomena in minimal surface metamaterials

Yuning Guo, Matheus I. Rosa, Massimo Ruzzene

Proceedings Volume PC12048, PC120480G (2022) https://doi.org/10.1117/12.2612936

KEYWORDS: Metamaterials, Additive manufacturing, Vibrometry, Physics, Modulation, Mechanical engineering, Interfaces, Fractal analysis

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Proceedings Article | 18 April 2022 Presentation

Dynamics of elastic lattices with random “small world” network connections

Matheus Inguaggiato Nora Rosa, Massimo Ruzzene

Proceedings Volume PC12048, PC120480F (2022) https://doi.org/10.1117/12.2612982

KEYWORDS: Acoustics, Waveguides, Diffusion

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Proceedings Article | 5 March 2021 Presentation + Paper

Dynamics of elastic hyperbolic lattices

Massimo Ruzzene

Proceedings Volume 11694, 1169417 (2021) https://doi.org/10.1117/12.2589474

KEYWORDS: Phasons

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Proceedings Article | 1 April 2019 Open Access

Dynamics of topological metastructures: nonlinearities and quasi-periodicity (Conference Presentation)

Massimo Ruzzene

Proceedings Volume 10972, 109720E (2019) https://doi.org/10.1117/12.2515686

KEYWORDS: Interfaces, Mechanics, Acoustics, Absorption, Vibration isolation

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Proceedings Article | 21 March 2019 Presentation + Paper

An analytical framework for Kirchhoff plate-type locally resonant piezoelectric metastructures

Christopher Sugino, Massimo Ruzzene, Alper Erturk

Proceedings Volume 10967, 1096709 (2019) https://doi.org/10.1117/12.2515371

KEYWORDS: Electrodes, Metamaterials, Finite element methods, Energy harvesting, Capacitance, Mechanical engineering, Aerospace engineering, Modal analysis, Structural engineering, Vibration control

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Proceedings Article | 27 March 2018 Presentation + Paper

Challenges and constraints in the application of resonance-based metamaterials for vibration isolation

William Johnson, Massimo Ruzzene

Proceedings Volume 10600, 1060024 (2018) https://doi.org/10.1117/12.2294919

KEYWORDS: Metamaterials, Resonators, Signal attenuation, Linear filtering, Vibration isolation, Motion models, Finite element methods, Mechanical engineering, Vibration control

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Proceedings Article | 22 March 2018 Presentation + Paper

Boundary modes in quasiperiodic elastic structures

Matheus I. Rosa, Raj Pal, José R. Arruda, Massimo Ruzzene

Proceedings Volume 10596, 1059606 (2018) https://doi.org/10.1117/12.2300887

KEYWORDS: Wave propagation, Systems modeling, Waveguides, Metamaterials, Interfaces, Mechanics, Crystals, Mechanical engineering

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Proceedings Article | 16 March 2018 Paper

Dispersion tailoring in varying-inductance piezoelectric metamaterials

Christopher Sugino, Massimo Ruzzene, Alper Erturk

Proceedings Volume 10595, 1059515 (2018) https://doi.org/10.1117/12.2318567

KEYWORDS: Refractive index, Metamaterials, Electrodes, Dispersion, Phase velocity, Inductance, GRIN lenses, Finite element methods, Modulation, Electromechanical design

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Proceedings Article | 11 April 2017 Paper

Toward structurally integrated locally resonant metamaterials for vibration attenuation

Jascha Schmied, Christopher Sugino, Andrea Bergamini, Paolo Ermanni, Massimo Ruzzene, Alper Erturk

Proceedings Volume 10164, 1016413 (2017) https://doi.org/10.1117/12.2260306

KEYWORDS: Metamaterials, Signal attenuation, Prototyping, Systems modeling, Structural design, Chemical elements, Finite element methods, Numerical analysis, Vibration isolation, 3D modeling, Resonators, Manufacturing, Kinematics

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Proceedings Article | 11 April 2017 Paper

Metamaterial piezoelectric beam with synthetic impedance shunts

Christopher Sugino, Stephen Leadenham, Massimo Ruzzene, Alper Erturk

Proceedings Volume 10164, 1016410 (2017) https://doi.org/10.1117/12.2260320

KEYWORDS: Electrodes, Metamaterials, Systems modeling, Signal attenuation, Electromechanical design, Capacitance, Wet etching, Etching, Nickel, Lead, Digital signal processing, Device simulation, Crystals, Simulink, Analog electronics, Resistors, Resistance

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Proceedings Article | 3 April 2015 Paper

Frequency wavenumber design of spiral macro fiber composite directional transducers

Matteo Carrara, Massimo Ruzzene

Proceedings Volume 9435, 94350M (2015) https://doi.org/10.1117/12.2084332

KEYWORDS: Transducers, Electrodes, Ferroelectric materials, Microsoft Foundation Class Library, Manufacturing, Composites, Structural health monitoring, Semiconducting wafers, Epoxies, Actuators

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Proceedings Article | 3 April 2015 Paper

Peridynamics as an analysis tool for wave propagation in graphene nanoribbons

A. Martowicz, W. Staszewski, M. Ruzzene, T. Uhl

Proceedings Volume 9435, 94350I (2015) https://doi.org/10.1117/12.2084312

KEYWORDS: Graphene, Wave propagation, Dispersion, Particles, Carbon, Phase velocity, Chemical species, Systems modeling, Nanostructures, 3D modeling

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Proceedings Article | 9 March 2014 Paper

Instantaneous wavenumber estimation for damage quantification in layered plate structures

Olivier Mesnil, Cara A. Leckey, Massimo Ruzzene

Proceedings Volume 9064, 90640D (2014) https://doi.org/10.1117/12.2044670

KEYWORDS: Composites, Waveguides, Spatial resolution, X-rays, Structural health monitoring, Glasses, Computer simulations, Aerospace engineering, Wave propagation, Fourier transforms

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Proceedings Article | 9 March 2014 Paper

A nonlocal finite difference scheme for simulation of wave propagation in 2D models with reduced numerical dispersion

A. Martowicz, M. Ruzzene, W. Staszewski, J. Rimoli, T. Uhl

Proceedings Volume 9064, 90640F (2014) https://doi.org/10.1117/12.2045252

KEYWORDS: Wave propagation, Computer simulations, Composites, Solid modeling, Numerical analysis, Solids, Phase velocity, Spatial resolution, Chemical elements, Wave plates

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Proceedings Article | 9 March 2014 Paper

Approaches to hybrid SHM and NDE of composite aerospace structures

Jennifer Michaels, Alexander Dawson, Thomas Michaels, Massimo Ruzzene

Proceedings Volume 9064, 906427 (2014) https://doi.org/10.1117/12.2045172

KEYWORDS: Transducers, Structural health monitoring, Waveguides, Composites, Nondestructive evaluation, Inspection, Aerospace engineering, Imaging arrays, Ultrasonics, Electronic filtering

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Proceedings Article | 9 March 2014 Paper

Wave propagation in 2D magneto-elastic kagome lattices

Marshall Schaeffer, Massimo Ruzzene

Proceedings Volume 9064, 90641W (2014) https://doi.org/10.1117/12.2045064

KEYWORDS: Particles, Magnetism, Wave propagation, Solids, Fermium, Radio propagation, Signal processing, 3D modeling, Optimization (mathematics), Einsteinium

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Proceedings Article | 8 March 2014 Paper

Fourier-based design of acoustic strain rosettes

Matteo Carrara, Massimo Ruzzene

Proceedings Volume 9061, 906135 (2014) https://doi.org/10.1117/12.2045059

KEYWORDS: Sensors, Acoustics, Optical lithography, Transducers, Electrodes, Aerospace engineering, Ferroelectric materials, Wave sensors, Mechanical sensors, Numerical simulations

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Proceedings Article | 17 April 2013 Paper

Numerical and experimental analysis of guided waves propagation in composite plates

Matteo Carrara, Massimo Ruzzene

Proceedings Volume 8695, 86950W (2013) https://doi.org/10.1117/12.2009866

KEYWORDS: Wave propagation, Composites, Scattering, Signal attenuation, Wave plates, Electroluminescent displays, Ferroelectric materials, Fourier transforms, Solids, Aluminum

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Proceedings Article | 17 April 2013 Paper

Multiscale analysis of wave-damage interaction in two and three dimensional isotropic plates

F. Casadei, J. Rimoli, M. Ruzzene

Proceedings Volume 8695, 86951P (2013) https://doi.org/10.1117/12.2009319

KEYWORDS: Scattering, 3D modeling, Chemical elements, Wave propagation, Radium, Wave plates, Finite element methods, Analytical research, Numerical simulations, Aluminum

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Proceedings Article | 17 April 2013 Paper

High stiffness, high damping chiral metamaterial assemblies for low-frequency applications

Emanuele Baravelli, Matteo Carrara, Massimo Ruzzene

Proceedings Volume 8695, 86952K (2013) https://doi.org/10.1117/12.2009712

KEYWORDS: Resonators, Vibration control, Silicon, Metamaterials, Aluminum, Signal attenuation, Polyurethane, Chiral metamaterials, Absorption, Oscillators

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Proceedings Article | 20 April 2012 Paper

Inkjet fabrication of spiral frequency-steerable acoustic transducers (FSATs)

Emanuele Baravelli, Matteo Senesi, David Gottfried, Luca De Marchi, Massimo Ruzzene

Proceedings Volume 8348, 834817 (2012) https://doi.org/10.1117/12.911980

KEYWORDS: Acoustics, Transducers, Electrodes, Printing, Structural health monitoring, Ferroelectric polymers, Inspection, Wave propagation, Signal processing, Ferroelectric materials

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Proceedings Article | 28 March 2012 Paper

Bimodal warped frequency transform (BWFT) for guided wave mode conversion characterization

Emanuele Baravelli, Luca De Marchi, Nicolò Speciale, Massimo Ruzzene

Proceedings Volume 8348, 834803 (2012) https://doi.org/10.1117/12.911974

KEYWORDS: Wave propagation, Structural health monitoring, Waveguides, Time-frequency analysis, Scattering, Ferroelectric materials, Dispersion, Damage detection, Associative arrays, Aluminum

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Proceedings Article | 28 March 2012 Paper

New method of negative capacitance shunt tuning for vibration control

Benjamin Beck, Kenneth Cunefare, Manuel Collet, Massimo Ruzzene

Proceedings Volume 8341, 834106 (2012) https://doi.org/10.1117/12.915599

KEYWORDS: Capacitance, Vibration control, Resistors, Resistance, Control systems, Capacitors, Chemical elements, Neodymium, Active vibration control, Amplifiers

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Proceedings Article | 28 April 2011 Paper

Semi-active optimization of 2D wave's dispersion into mechanical systems by the mean of periodically distributed shunted piezoelectric patches: a new class of adaptive metamaterials

M. Collet, M. Ouisse, M. Ichchou, M. Ruzzene

Proceedings Volume 7978, 79780Y (2011) https://doi.org/10.1117/12.883118

KEYWORDS: Wave propagation, Computing systems, Dispersion, Diffusion, Metamaterials, Strontium, Antimony, Electrodes, Waveguides, Matrices

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Proceedings Article | 27 April 2011 Paper

Active vibration control of a stiffened panel through application of negative capacitance shunts

Benjamin Beck, Kenneth Cunefare, Manuel Collet, Massimo Ruzzene

Proceedings Volume 7977, 79770C (2011) https://doi.org/10.1117/12.880418

KEYWORDS: Capacitance, Control systems, Active vibration control, Resistors, Vibration control, Sensors, Skin, Motion models, Velocity measurements, Transducers

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Proceedings Article | 18 April 2011 Paper

Application of the multi-scale finite element method to wave propagation problems in damaged structures

F. Casadei, M. Ruzzene

Proceedings Volume 7984, 79842Q (2011) https://doi.org/10.1117/12.880085

KEYWORDS: Radium, Chemical elements, Finite element methods, Scattering, Wave propagation, Strontium, Computer simulations, Rubidium, Structural health monitoring, Transducers

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Proceedings Article | 14 April 2011 Paper

A spiral frequency steerable acoustic transducer for SHM

Matteo Senesi, Massimo Ruzzene

Proceedings Volume 7981, 798136 (2011) https://doi.org/10.1117/12.880332

KEYWORDS: Sensors, Transducers, Acoustics, Waveguides, Wave propagation, Ferroelectric materials, Fourier transforms, Structural health monitoring, Polarization, Beam steering

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Proceedings Article | 1 April 2011 Paper

Multiple component mode conversion coefficients via Lamb wave polarization measurements

James Ayers, Nicoleta Apetre, Massimo Ruzzene

Proceedings Volume 7984, 798411 (2011) https://doi.org/10.1117/12.880065

KEYWORDS: Polarization, Signal to noise ratio, Finite element methods, Waveguides, Velocity measurements, Aluminum, Analytical research, Doppler effect, Optical filters, Lasers

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Proceedings Article | 1 April 2011 Paper

High-resolution damage imaging in flat and bent plate-like structures through warped-basis pursuit

Emanuele Baravelli, Luca De Marchi, Massimo Ruzzene, Nicolò Speciale

Proceedings Volume 7984, 798412 (2011) https://doi.org/10.1117/12.880569

KEYWORDS: Waveguides, Wave propagation, Smoothing, Dispersion, Structural health monitoring, Spatial resolution, Image resolution, Inspection, Phased arrays, Ferroelectric materials

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Proceedings Article | 1 April 2011 Paper

Guided waves filtering with warped curvelets

Luca De Marchi, Emanuele Baravelli, Massimo Ruzzene, Nicolò Speciale

Proceedings Volume 7984, 79841Z (2011) https://doi.org/10.1117/12.880456

KEYWORDS: Wave propagation, Waveguides, Signal processing, Ultrasonics, Signal analyzers, Time-frequency analysis, Wave plates, Aluminum, Fourier transforms, Structural health monitoring

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Proceedings Article | 9 April 2010 Paper

Periodic piezoelectric sensor-actuator array for vibration suppression on a beam

Benjamin Beck, Kenneth Cunefare, Manuel Collet, Massimo Ruzzene

Proceedings Volume 7643, 76430P (2010) https://doi.org/10.1117/12.847750

KEYWORDS: Capacitance, Sensors, Vibration control, Signal attenuation, Feedback control, Actuators, Resistors, Active vibration control, Wave propagation, Laser Doppler velocimetry

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Proceedings Article | 9 April 2010 Paper

Damage visualization via beamforming of frequency-wavenumber filtered wavefield data

Massimo Ruzzene, Buli Xu, Sang Jun Lee, Thomas Michaels, Jennifer Michaels

Proceedings Volume 7650, 76500L (2010) https://doi.org/10.1117/12.847851

KEYWORDS: Image filtering, Algorithm development, Detection and tracking algorithms, Transducers, Fourier transforms, Visualization, Damage detection, Structural health monitoring, Wave propagation, Aluminum

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Proceedings Article | 9 April 2010 Paper

Warped frequency transform for damage detection using Lamb waves

Luca De Marchi, Massimo Ruzzene, Buli Xu, Emanuele Baravelli, Alessandro Marzani, Nicolò Speciale

Proceedings Volume 7650, 76500F (2010) https://doi.org/10.1117/12.847688

KEYWORDS: Wave propagation, Waveguides, Chemical species, Signal processing, Aluminum, Time-frequency analysis, Structural health monitoring, Associative arrays, Dispersion, Ferroelectric materials

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Proceedings Article | 9 April 2010 Paper

Modeling and characterization of macro-fiber composite transducers for Lamb wave excitation

Manuel Collet, Massimo Ruzzene, Ken Cunefare, Buli Xu

Proceedings Volume 7650, 76501H (2010) https://doi.org/10.1117/12.847549

KEYWORDS: Protactinium, Transducers, Microsoft Foundation Class Library, Actuators, Solids, Composites, Fourier transforms, Wave plates, Interfaces, Chemical elements

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Proceedings Article | 9 April 2010 Paper

Frequency-domain bridging multiscale method for wave propagation simulations in damaged structures

F. Casadei, M. Ruzzene

Proceedings Volume 7650, 76501F (2010) https://doi.org/10.1117/12.847427

KEYWORDS: Wave propagation, Chemical elements, Computer simulations, Waveguides, Matrices, Atrial fibrillation, Interfaces, Fourier transforms, Neodymium, Aluminum

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Proceedings Article | 31 March 2010 Paper

Wave propagation and structural dynamics in graphene nanoribbons

F. Scarpa, M. Ruzzene, S. Adhikari, R. Chowdhury

Proceedings Volume 7646, 76461A (2010) https://doi.org/10.1117/12.847016

KEYWORDS: Graphene, Wave propagation, Structural dynamics, Performance modeling, Nanosensors, Biosensors, Sensors, Current controlled current source, Nanostructures, Electronics

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Proceedings Article | 8 April 2009 Paper

Frequency-wavenumber domain methods for analysis of incident and scattered guided wave fields

Thomas Michaels, Massimo Ruzzene, Jennifer Michaels

Proceedings Volume 7295, 729513 (2009) https://doi.org/10.1117/12.816046

KEYWORDS: Transducers, Wave propagation, Acoustics, Scattering, Waveguides, Corrosion, Transmitters, Fourier transforms, Aluminum, Wavefronts

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Proceedings Article | 8 April 2009 Paper

Two-dimensional periodic actuators for frequency-based beam steering

M. Romanoni, N. Apetre, M. Ruzzene, S. Gonella

Proceedings Volume 7295, 729526 (2009) https://doi.org/10.1117/12.815845

KEYWORDS: Actuators, Beam steering, Waveguides, Dispersion, Structural health monitoring, Wave propagation, Wave plates, Fourier transforms, Sensors, Biological research

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Proceedings Article | 8 April 2009 Paper

Using diffuse field interferometry for structural and material characterization in complex aircraft structures

Adelaide Duroux, James Ayers, Karim Sabra, Massimo Ruzzene

Proceedings Volume 7295, 72950X (2009) https://doi.org/10.1117/12.815667

KEYWORDS: Signal to noise ratio, Interferometry, Sensors, Structural health monitoring, Aircraft structures, Material characterization, Wave propagation, Ultrasonics, Light wave propagation, Waveguides

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Proceedings Article | 7 April 2009 Paper

Vibration control of plates featuring periodic arrays of hybrid shunted piezoelectric patches

F. Casadei, M. Ruzzene, B. Beck, K. Cunefare

Proceedings Volume 7288, 72881J (2009) https://doi.org/10.1117/12.815843

KEYWORDS: Signal attenuation, Capacitance, Vibration control, Resistance, Aluminum, Actuators, Wave propagation, Quantum efficiency, Resistors, Gyrators

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Proceedings Article | 7 April 2009 Paper

Exploration of nonlinear shunting strategies as effective vibration absorbers

R. Viguié, G. Kerschen, M. Ruzzene

Proceedings Volume 7288, 72882B (2009) https://doi.org/10.1117/12.815805

KEYWORDS: Complex systems, Capacitance, Chemical elements, Numerical simulations, Oscillators, Amplifiers, Matrices, Inductance, Computing systems, Lithium

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Proceedings Article | 18 April 2008 Paper

Vibroacoustics and wave propagation of novel chiral honeycombs

Kong Fah Tee, Alessandro Spadoni, Fabrizio Scarpa, Massimo Ruzzene

Proceedings Volume 6928, 69280J (2008) https://doi.org/10.1117/12.776075

KEYWORDS: Wave propagation, Skin, Modal analysis, Manufacturing, Finite element methods, Solids, Acoustics, Aerospace engineering, Aluminum, Numerical analysis

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Proceedings Article | 6 April 2006 Paper

Modeling and testing of shape memory alloy chiral honeycomb structures

F. Scarpa, M. Hassan, M. Ruzzene

Proceedings Volume 6170, 61700W (2006) https://doi.org/10.1117/12.658441

KEYWORDS: Shape memory alloys, Prototyping, Antennas, Manufacturing, Nickel, Copper, Solids, Aerospace engineering, Statistical analysis, Statistical modeling

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Proceedings Article | 17 May 2005 Paper

Chiral hexagonal cellular sandwich structures: dynamic response

A. Spadoni, M. Ruzzene, F. Scarpa

Proceedings Volume 5764, (2005) https://doi.org/10.1117/12.600021

KEYWORDS: Chemical elements, Motion models, Shape analysis, Systems modeling, Numerical simulations, Aluminum, Epoxies, Adhesives, Aerospace engineering, Solids

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Proceedings Article | 16 May 2005 Paper

Experimental analysis of wave propagation in periodic grid-like structures

Sang Jeong, Massimo Ruzzene

Proceedings Volume 5760, (2005) https://doi.org/10.1117/12.599709

KEYWORDS: Wave propagation, Manufacturing, Signal attenuation, Vibration isolation, Aerospace engineering, Aluminum, Optical filters, Numerical analysis, Solid state physics, Mechanical engineering

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Proceedings Article | 16 May 2005 Paper

Chiral hexagonal cellular sandwich structure: a vibro-acoustic assessment

Tze Lew, Alessandro Spadoni, Fabrizio Scarpa, Massimo Ruzzene

Proceedings Volume 5760, (2005) https://doi.org/10.1117/12.599606

KEYWORDS: Mirrors, Manufacturing, Composites, Solids, Aerospace engineering, Resistance, Finite element methods, MATLAB, Mechanical engineering, Absorption

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Proceedings Article | 29 July 2004 Paper

Vibration and sound radiation from a sandwich cylindrical shell with prismatic core

Sang Jeong, Massimo Ruzzene

Proceedings Volume 5386, (2004) https://doi.org/10.1117/12.540351

KEYWORDS: Chemical elements, Acoustics, Finite element methods, 3D modeling, Aerospace engineering, Fluid dynamics, Silicon, Microfluidics, Solids, Foam

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Proceedings Article | 29 July 2004 Paper

Directional and band-gap behavior of periodic grid-like structures

Sang Jeong, Massimo Ruzzene

Proceedings Volume 5386, (2004) https://doi.org/10.1117/12.540352

KEYWORDS: Wave propagation, Signal attenuation, Chemical elements, Matrices, Aerospace engineering, Vibration isolation, Dispersion, Visualization, Solid state physics, Smart materials

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Proceedings Article | 21 July 2004 Paper

Spectral element formulation for SMA beams under random vibration excitation

Fabrizio Scarpa, Massimo Ruzzene, Mohammed Hassan

Proceedings Volume 5387, (2004) https://doi.org/10.1117/12.545968

KEYWORDS: Shape memory alloys, Chemical elements, Wave propagation, Fourier transforms, Solids, Aerospace engineering, Smart materials, Beryllium, Structural dynamics, Time-frequency analysis

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Proceedings Article | 13 August 2003 Paper

A general FEM technique to model wave propagation in cellular periodic structures

Massimo Ruzzene, Fabrizio Scarpa

Proceedings Volume 5053, (2003) https://doi.org/10.1117/12.498565

KEYWORDS: Wave propagation, Finite element methods, Chemical elements, Matrices, Solid modeling, Aerospace engineering, Antennas, Superposition, Solids, Solid state physics

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Proceedings Article | 1 August 2003 Paper

Novelty detection technique with SLV for identification of core properties in honeycombs and cellular solids

Fabrizio Scarpa, Graeme Manson, M. Ruzzene

Proceedings Volume 5046, (2003) https://doi.org/10.1117/12.488043

KEYWORDS: Solids, Mahalanobis distance, Finite element methods, Manufacturing, Signal detection, Statistical modeling, Data modeling, Performance modeling, 3D modeling, Aerospace engineering

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Proceedings Article | 31 July 2003 Paper

Identification of acoustic properties of auxetic foams

Fabrizio Scarpa, F. Dallocchio, M. Ruzzene

Proceedings Volume 5052, (2003) https://doi.org/10.1117/12.487559

KEYWORDS: Foam, Acoustics, Absorption, Manufacturing, Solids, Polyurethane, Signal attenuation, Signal detection, Packaging, Resistance

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Proceedings Article | 13 August 2002 Paper

Thermal analyses of SIM-25 and VS1.6 land mines

Massimo Ruzzene, Francesco Soranna, Thomas Becker, Mark Cumo, Steven Bishop

Proceedings Volume 4742, (2002) https://doi.org/10.1117/12.479096

KEYWORDS: Land mines, Explosives, Soil science, Thermal modeling, 3D modeling, Thermal analysis, Solids, Temperature metrology, Mining, Sensors

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Proceedings Article | 27 June 2002 Paper

Control of vibration and wave propagation in sandwich plates with periodic auxetic core

Fabrizio Scarpa, Massimo Ruzzene, Luca Mazzarella, Panagiotis Tsopelas

Proceedings Volume 4697, (2002) https://doi.org/10.1117/12.472655

KEYWORDS: Wave propagation, Finite element methods, Signal attenuation, Wave plates, Vibration control, Control systems, Composites, Radio propagation, Solids, Motion analysis

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The wave propagation in and the vibration of sandwich plates with cellular core are analyzed and controlled. Negative Poisson's ratio (auxetic) core materials of different geometry placed periodically in the plate introduce the proper impedance mismatch necessary to obstruct the propagation of waves over specified frequency bands (stop bands) and in particular directions. The location and the extension of the stop bands and the directions of wave propagation can be modified by proper selection of the periodicity and of the geometrical and physical properties of the core. A Finite Element model is developed to predict the dynamic response of three-layered sandwich panels with honeycomb core. The Finite Element model along with the theory of periodic structures is used to evaluate the influence of core materials of different geometry placed periodically along the two dimensions of the structure. This combined analysis yields the phase constant surfaces for the considered sandwich plates, which define location and extension of the stop bands, as well as the directions of wave propagation at assigned frequency values. The analysis of the phase constant surfaces and the evaluation of the harmonic response at specified frequencies indicate that the plates are characterized by dynamic behaviors with directional properties, with spatial patterns strongly dependent on the configuration of the periodic core and on the excitation frequency. Auxetic honeycombs are considered as core materials in order to obtain maximum design flexibility. The elastic and inertial characteristics of auxetic honeycombs in fact vary substantially with their internal geometry and for given configurations outcast up to five times the corresponding properties of traditional hexagonal honeycombs. The presented numerical results demonstrate the unique characteristics of this class of two-dimensional periodic structures, which behave as directional mechanical filters. The findings of this study suggest that optimal configurations for the periodic cellular core can be identified in order to design passive composite panels, which are stable and quiet over desired frequency bands and which fit desired transmissibility levels in particular directions. Such unique filtering capabilities are achieved without requiring additional passive or active control devices and therefore without compromising the size and the weight of the layered structure.

Proceedings Article | 27 June 2002 Paper

Comparison between the theoretical model and experimental outcomes of oscillations of para- and diamagnetic structures subject to passive magnetic elements

Bruno Piombo, Elvio Bonisoli, Massimo Ruzzene

Proceedings Volume 4697, (2002) https://doi.org/10.1117/12.472677

KEYWORDS: Magnetism, Aluminum, Systems modeling, Copper, Dynamical systems, Reliability, Beam analyzers, Data modeling, Analytical research, Mechanical engineering

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Proceedings Article | 27 June 2002 Paper

Wave beaming effects in bidimensional cellular structures

Fabrizio Scarpa, Massimo Ruzzene, Francesco Soranna

Proceedings Volume 4697, (2002) https://doi.org/10.1117/12.472681

KEYWORDS: Wave propagation, Solids, Matrices, Signal attenuation, Finite element methods, Vibration isolation, Prototyping, Motion analysis, Mechanical engineering, Structural design

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Cellular structures like honeycombs or reticulated micro-frames are widely used in sandwich construction because of their superior structural static and dynamic properties. Aim of this study is to evaluate the dynamic behavior of bi-dimensional cellular structures, with focus on the effect of the geometry of the unit cell composing the solid on the dynamics of the propagation of elastic waves within the structure. The characteristics of wave propagation for the considered class of cellular solids are analyzed through the Finite Element model of the unit cell and the application of the theory of periodic structures. This combined analysis yields the phase constant surfaces, which define the directions of wave propagation in the plane of the structure for assigned frequency values. The analysis of iso-frequency contour lines in the phase constant surfaces allows predicting the location and extension of angular ranges, and therefore regions within the structures, where waves do not propagate. The performance of honeycomb grids of regular hexagonal topology is compared with that of grids of various geometries, with emphasis on configurations featuring a negative Poisson's ratio behavior. The harmonic response of the considered structures at specified frequencies confirms the predictions from the analysis of the phase constant surfaces and demonstrates the strongly spatial dependent characteristics of periodic cellular structures. The presented numerical results indicate the potentials of the phase constant surfaces as tools for the evaluation of the wave propagation characteristics of this class of two-dimensional periodic structures. Optimal design configurations can be identified in order to achieve desired transmissibility levels in specified directions and to obtain efficient vibration isolation capabilities. The findings from the presented investigations and the described analysis methodology will provide invaluable guidelines for the prototyping of future concepts of honeycombs or cellular structures with enhanced vibro-acoustics performance.

Proceedings Article | 16 August 2001 Paper

Wavelet analysis of wave propagation in shells with periodic stiffeners

Massimo Ruzzene, Zheng Gu, Amr Baz

Proceedings Volume 4327, (2001) https://doi.org/10.1117/12.436566

KEYWORDS: Wave propagation, Wavelets, Chemical elements, Wavelet transforms, Time-frequency analysis, Visualization, Signal analyzers, Fourier transforms, Signal detection, Signal attenuation

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Proceedings Article | 16 August 2001 Paper

Wave propagation in periodic stiffened shells: spectral finite element modeling and experiments

G. Solaroli, Zheng Gu, Massimo Ruzzene, Amr Baz

Proceedings Volume 4327, (2001) https://doi.org/10.1117/12.436570

KEYWORDS: Wave propagation, Signal attenuation, Chemical elements, Finite element methods, Spectral models, Matrices, Mechanical engineering, Shape memory alloys, Radio propagation, Numerical simulations

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Proceedings Article | 16 August 2001 Paper

Dynamic stability of periodic shells with moving loads

Massimo Ruzzene, Amr Baz

Proceedings Volume 4327, (2001) https://doi.org/10.1117/12.436562

KEYWORDS: Wave propagation, Chemical elements, Finite element methods, Motion models, Signal attenuation, Silicon, Mechanical engineering, Analytical research, Dynamical systems, Robotics

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Proceedings Article | 2 July 2001 Paper

Control of wave propagation in sandwich beams with auxetic core

Massimo Ruzzene, Fabrizio Scarpa

Proceedings Volume 4331, (2001) https://doi.org/10.1117/12.432728

KEYWORDS: Wave propagation, Solids, Finite element methods, Beam propagation method, Chemical elements, Signal attenuation, Composites, Solid modeling, Mechanical engineering, Control systems

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Proceedings Article | 2 July 2001 Paper

Attenuation and localization of wave propagation in rods with periodic shunted piezoelectric patches

Owen Thorp, Massimo Ruzzene, Amr Baz

Proceedings Volume 4331, (2001) https://doi.org/10.1117/12.432706

KEYWORDS: Wave propagation, Signal attenuation, Inductance, Resistance, Mathematical modeling, Electroluminescence, Capacitance, Shape memory alloys, Mechanical engineering, Structural design

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Proceedings Article | 12 June 2000 Paper

Attenuation and localization of wave propagation in periodic rods using shape memory inserts

Massimo Ruzzene, Amr Baz

Proceedings Volume 3991, (2000) https://doi.org/10.1117/12.388181

KEYWORDS: Wave propagation, Shape memory alloys, Composites, Signal attenuation, Chemical elements, Structural design, Protactinium, Mechanical engineering, Performance modeling, Shape analysis

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The capability of periodic structures to act as filters for traveling waves is used to control the longitudinal wave propagation in rods. Shape memory inserts placed periodically along the rods act as sources of impedance mismatch with tunable characteristics. Such characteristics are attributed to the unique behavior of the shape memory alloy whereby the elastic modulus of the inserts can be varied up to three times as the alloy undergoes a phase transformation. With such controllable capability, the inserts can introduce the proper impedance mismatch necessary to reduce the wave propagation. An analytical model based on the transfer matrix approach is developed to predict the performance of the periodic rods with shape memory inserts. The activation temperatures of the shape memory inserts are controlled using two different strategies. The propagation constants as well as the response of the composite rod are first evaluated when the inserts are all activated at the same temperature. The obtained results show that changing the thermal activation modifies the width and location of the pass and stop bands. The rod can therefore be tuned to attenuate waves propagating at selected frequencies. The tunable characteristics of the shape memory alloy are also used to introduce irregularities in the periodic structure. The source of disorder is the variance in the activation temperature of the inserts. Disorder in the periodicity typically extends the stop-bands into adjacent propagation zones. More importantly, it produces the localization of the vibration energy near the excitation source. The obtained results demonstrate the localization phenomenon and its control through appropriate tuning of the level of disorder in the activation temperatures. The theoretical investigations presented here provide guidelines for the level of disorder in the activation temperatures. The theoretical investigations presented here provide guidelines for designing tunable periodic structures with high control flexibility where propagating waves can be attenuated and localized.

Proceedings Article | 1 February 1999 Paper

Comparison between three identification techniques of a road bridge dynamic test

Alessandro Fasana, Luigi Garibaldi, Ermanno Giorcelli, Stefano Marchesiello, Massimo Ruzzene

Proceedings Volume 3587, (1999) https://doi.org/10.1117/12.339936

KEYWORDS: Bridges, Roads, Systems modeling, Stochastic processes, Matrices, System identification, Data acquisition, Autoregressive models, Dynamical systems, Data modeling

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Proceedings Article | 16 June 1998 Paper

Oberst beam test technique

Alessandro Fasana, Luigi Garibaldi, Ermanno Giorcelli, Massimo Ruzzene

Proceedings Volume 3327, (1998) https://doi.org/10.1117/12.310708

KEYWORDS: Metals, Composites, Standards development, Finite element methods, Data modeling, Chemical elements, Error analysis, Active vibration control, Temperature metrology, Solids

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Proceedings Article | 9 May 1997 Paper

Passive damping of beams with constrained viscoelastic material

Alessandro Fasana, Luigi Garibaldi, Ermanno Giorcelli, Massimo Ruzzene

Proceedings Volume 3045, (1997) https://doi.org/10.1117/12.274200

KEYWORDS: Beam shaping, Reliability, Shape analysis, Solids, Interfaces, Differential equations, Computing systems, Information operations, Factor analysis, Motion models

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Proceedings Article | 13 November 1996 Paper

Identification of the dynamic behavior of bridges under ambient excitation using wavelet transform

Alessandro Fasana, Luigi Garibaldi, Bruno Piombo, Massimo Ruzzene

Proceedings Volume 2946, (1996) https://doi.org/10.1117/12.259146

KEYWORDS: Bridges, Wavelets, Wavelet transforms, Radon, Time-frequency analysis, System identification, Data analysis, Mathematical modeling, Data modeling, Computer simulations

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Showing 5 of 71 publications

Conference Committee Involvement (9)