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Proceedings Papers

Concurrently Engineered Active Composite Sandwich Panels

K. L. Koudela, G. H. Koopmann, W. Chen
Proc. ASME. IMECE96, Noise Control and Acoustics: Volume 1 — Active Noise and Vibration Control; Complexity in Acoustics; Noise Sources in Internal Combustion Engines; Vehicle Flow/Structure Noises; Aeroacoustic Sound Propagation in Ducts and Jets; Turbomachinery Noise; BS/MS Student Paper Competition, 275-280, November 17–22, 1996
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1996-0534
https://doi.org/10.1115/IMECE1996-0534
View Paper titled, Concurrently Engineered Active Composite Sandwich Panels
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Topics: Composite materials, Sandwich panels, Actuators, Engineering prototypes, Sound pressure, Design, Dynamic response, Electromagnetic spectrum, Epoxy adhesives, Epoxy resins
Proceedings Papers

Tuning a Replica of the Liberty Bell via Material Tailoring: An Application of a Method for Optimal Acoustic Design

G. H. Koopmann, David Ericson, Adam Olchowski, Eric Salesky
Proc. ASME. IMECE2001, Noise Control and Acoustics, 243-248, November 11–16, 2001
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2001/NCA-23526
https://doi.org/10.1115/IMECE2001/NCA-23526
View Paper titled, Tuning a Replica of the Liberty Bell via Material Tailoring: An Application of a Method for Optimal Acoustic Design
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Topics: Acoustics, Design, Computer software, Dynamics (Mechanics), Eigenfunctions, Eigenvalues, Engineering disciplines, Engines, Matlab, Optimization
Proceedings Papers

Minimization of Radiated Sound Power From Vibrating Shells by Optimal Placement of Lumped Masses

A. D. Belegundu, G. H. Koopmann, E. W. Constans
Proc. ASME. DETC97, Volume 1C: 16th Biennial Conference on Mechanical Vibration and Noise, V01CT16A007, September 14–17, 1997
Publisher: American Society of Mechanical Engineers
Paper No: DETC97/VIB-3798
https://doi.org/10.1115/DETC97/VIB-3798
View Paper titled, Minimization of Radiated Sound Power From Vibrating Shells by Optimal Placement of Lumped Masses
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Topics: Shells, Mode shapes, Noise (Sound), Optimization, Vibration
Journal Articles

A New Design Strategy for Minimizing Sound Radiation of Vibrating Beam Using Dimples

W. N. Cheng, C. C. Cheng, G. H. Koopmann
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. October 2011, 133(5): 051008.
https://doi.org/10.1115/1.4003939
Published Online: September 20, 2011
View Article titled, A New Design Strategy for Minimizing Sound Radiation of Vibrating Beam Using Dimples
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Topics: Design, Vibration, Shapes, Radiation (Physics), Acoustics, Optimization, Modal assurance criterion, Sound
Journal Articles

Dynamic Beam Modification Using Dimples

W. N. Cheng, C. C. Cheng, G. H. Koopmann
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. August 2008, 130(4): 041007.
https://doi.org/10.1115/1.2890400
Published Online: July 1, 2008
View Article titled, Dynamic Beam Modification Using Dimples
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Topics: Mechanical admittance, Vibration, Equilibrium (Physics), Simply supported beams
Proceedings Papers

Passive Control of Tire Vibration With a Dry Polymer Additive: Experiments and Analysis

J. E. Frank, G. H. Koopmann, W. Chen
Proc. ASME. IDETC-CIE2003, Volume 5: 19th Biennial Conference on Mechanical Vibration and Noise, Parts A, B, and C, 1937-1945, September 2–6, 2003
Publisher: American Society of Mechanical Engineers
Paper No: DETC2003/VIB-48538
https://doi.org/10.1115/DETC2003/VIB-48538
View Paper titled, Passive Control of Tire Vibration With a Dry Polymer Additive: Experiments and Analysis
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Topics: Passive control, Polymers, Tires, Vibration, Dynamometers, Highways, Testing, Particulate matter, Roads, Vehicles
Journal Articles

A Method for Designing and Fabricating Broadband Vibration Absorbers for Structural Noise Control

Eiichi Nishida, G. H. Koopmann
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Technical Papers
J. Vib. Acoust. August 2007, 129(4): 397–405.
https://doi.org/10.1115/1.2424968
Published Online: November 1, 2006
View Article titled, A Method for Designing and Fabricating Broadband Vibration Absorbers for Structural Noise Control
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Topics: Damping, Degrees of freedom, Design, Modeling, Noise control, Shells, Stiffness, Vibration absorbers, Springs, Vibration
Journal Articles

A Design Method for Minimizing the Sound Power Radiated from Plates by Adding Optimally Sized, Discrete Masses

R. L. St. Pierre, Jr., G. H. Koopmann
Journal: Journal of Mechanical Design
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. June 1995, 117(B): 243–251.
https://doi.org/10.1115/1.2836463
Published Online: June 1, 1995
View Article titled, A Design Method for Minimizing the Sound Power Radiated from Plates by Adding Optimally Sized, Discrete Masses
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Topics: Acoustic intensity, Design, Design methodology, Electromagnetic spectrum, Mode shapes, Optimization, Optimization algorithms, Plates (structures), Probes, Resonance
Journal Articles

A Design Method for Minimizing the Sound Power Radiated from Plates by Adding Optimally Sized, Discrete Masses

R. L. St. Pierre, Jr., G. H. Koopmann
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. June 1995, 117(B): 243–251.
https://doi.org/10.1115/1.2838669
Published Online: June 1, 1995
View Article titled, A Design Method for Minimizing the Sound Power Radiated from Plates by Adding Optimally Sized, Discrete Masses
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Topics: Acoustic intensity, Design, Design methodology, Electromagnetic spectrum, Mode shapes, Optimization, Optimization algorithms, Plates (structures), Probes, Resonance
Journal Articles

Analytical Sensitivity of Acoustic Power Radiated from Plates

R. R. Salagame, A. D. Belegundu, G. H. Koopmann
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. January 1995, 117(1): 43–48.
https://doi.org/10.1115/1.2873865
Published Online: January 1, 1995
View Article titled, Analytical Sensitivity of Acoustic Power Radiated from Plates
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Topics: Acoustics, Plates (structures), Design, Excitation, Finite element analysis, Modeling, Sensitivity analysis, Sound
Journal Articles

An Improved Theoretical Model of Acoustic Agglomeration

L. Song, G. H. Koopmann, T. L. Hoffmann
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. April 1994, 116(2): 208–214.
https://doi.org/10.1115/1.2930414
Published Online: April 1, 1994
View Article titled, An Improved Theoretical Model of Acoustic Agglomeration
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Topics: Acoustics, Agglomeration (Materials), Particulate matter, Scattering (Physics), Simulation
Journal Articles

An Active Control Strategy for Achieving Weak Radiator Structures

K. Naghshineh, G. H. Koopmann
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. January 1994, 116(1): 31–37.
https://doi.org/10.1115/1.2930393
Published Online: January 1, 1994
View Article titled, An Active Control Strategy for Achieving Weak Radiator Structures
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Topics: Actuators, Displacement, Excitation, Mechanical admittance, Optimization, Radiation (Physics), Simply supported beams, Waves
Journal Articles

Two-Channel Laser Vibrometer Techniques for Vibrational Intensity Measurements: Part 2—Longitudinal Intensity

T. E. McDevitt, G. H. Koopmann, C. B. Burroughs
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. January 1994, 116(1): 100–104.
https://doi.org/10.1115/1.2930384
Published Online: January 1, 1994
View Article titled, Two-Channel Laser Vibrometer Techniques for Vibrational Intensity Measurements: Part 2—Longitudinal Intensity
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Topics: Laser Doppler vibrometers, Flow (Dynamics), Lasers
Journal Articles

Two-Channel Laser Vibrometer Techniques for Vibrational Intensity Measurements: Part 1—Flexural Intensity

T. E. McDevitt, G. H. Koopmann, C. B. Burroughs
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. October 1993, 115(4): 436–440.
https://doi.org/10.1115/1.2930369
Published Online: October 1, 1993
View Article titled, Two-Channel Laser Vibrometer Techniques for Vibrational Intensity Measurements: Part 1—Flexural Intensity
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Topics: Laser Doppler vibrometers, Laser beams, Lasers, Errors, Excitation, Flow (Dynamics), Resonance, Rods, Waves
Journal Articles

Experimental and Numerical Analysis of Bimodal Acoustic Agglomeration

T. L. Hoffmann, W. Chen, G. H. Koopmann, A. W. Scaroni, L. Song
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. July 1993, 115(3): 232–240.
https://doi.org/10.1115/1.2930338
Published Online: July 1, 1993
View Article titled, Experimental and Numerical Analysis of Bimodal Acoustic Agglomeration
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Topics: Acoustics, Agglomeration (Materials), Numerical analysis, Particulate matter, Combustion chambers, Coal, Combustion, Fly ash, Sensitivity analysis, Simulation models
Journal Articles

An Experiment on Optimization of Active Noise Control on a Three-Dimensional Extended Radiator

J. A. Giordano, K. A. Cunefare, G. H. Koopmann
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. January 1993, 115(1): 53–58.
https://doi.org/10.1115/1.2930314
Published Online: January 1, 1993
View Article titled, An Experiment on Optimization of Active Noise Control on a Three-Dimensional Extended Radiator
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Topics: Noise control, Optimization, Acoustics, Loudspeakers, Plates (structures), Boundary element methods, Computers, Corners (Structural elements), Signals, Sound pressure
Journal Articles

Acoustic Design Sensitivity for Structural Radiators

K. A. Cunefare, G. H. Koopmann
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. April 1992, 114(2): 178–186.
https://doi.org/10.1115/1.2930247
Published Online: April 1, 1992
View Article titled, Acoustic Design Sensitivity for Structural Radiators
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Topics: Acoustics, Design, Acoustic intensity, Dimensions, Wavelength, Approximation, Boundary element methods, Integral equations
Journal Articles

A Boundary Element Approach to Optimization of Active Noise Control Sources on Three-Dimensional Structures

K. A. Cunefare, G. H. Koopmann
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. July 1991, 113(3): 387–394.
https://doi.org/10.1115/1.2930196
Published Online: July 1, 1991
View Article titled, A Boundary Element Approach to Optimization of Active Noise Control Sources on Three-Dimensional Structures
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Topics: Boundary element methods, Noise control, Optimization, Noise (Sound), Acoustics, Integral equations
Journal Articles

Fan Casing Noise Radiation

G. H. Koopmann, W. Neise, K. A. Cunefare
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. January 1991, 113(1): 37–42.
https://doi.org/10.1115/1.2930152
Published Online: January 1, 1991
View Article titled, Fan Casing Noise Radiation
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Topics: Noise (Sound), Radiation (Physics), Sound pressure, Blades, Boundary element methods, Computation, Ducts, Noise control, Vibration, Vibration measurement
Journal Articles

Active Sources in the Cutoff of Centrifugal Fans to Reduce the Blade Tones at Higher-Order Duct Mode Frequencies

W. Neise, G. H. Koopmann
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. January 1991, 113(1): 123–131.
https://doi.org/10.1115/1.2930146
Published Online: January 1, 1991
View Article titled, Active Sources in the Cutoff of Centrifugal Fans to Reduce the Blade Tones at Higher-Order Duct Mode Frequencies
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Topics: Blades, Ducts, Fans