Publications
J. Frank, E. Mockensturm, G. Koopmann, G. Lesieutre, W. Chen and J. Loverich, 2003, Modeling and Design Optimization of a Bimorph-Driven Rotary Motor, Journal of Intelligent Material Systems and Structures, Vol. 14, No. 4, pp. 217-229.
G.A. Lesieutre, J. Loverich, G.H. Koopmann, and E.M. Mockensturm, 2003, Increasing the Mechanical Work Output of an Active Material Using a Nonlinear Motion Transmission Mechaism, Journal of Intelligent Material Systems and Structures (in print).
G.A. Lesieutre, R. Rusovici, G.H. Koopmann, and J.J. Dosch, 2003, Modeling and Characterization of a Piezoceramic Inertial Actuator, JVA, Vol. 261, pp. 93-107.
K. Chen, G. Koopmann, 2002, Active Control of Low-Frequency Sound Radiation From Vibrating Panels Using Planar Sound Sources, Journal of Vibration and Acoustics, 124, 2 (2002).
M.Yang, G. Koopmann, 2002, An inverse method to compute equivalent forces on a structure based on sound power measurements, Journal of Sound and Vibration, Vol 252, Issue 1, 18 April 2002, pages 65-82.
S. Sharp, P. Nelson, G. Koopmann, 2002, A theoretical investigation of optimal power absorption as a noise control technique, Journal of Sound and Vibration, Vol 251, Issue 5, 11 April 2002, pages 927-935.
G.H. Koopmann and G.A. Lesieutre, 2001, Performance of the PSU Rotary Piezo-Actuator, Adaptive Stuctures III, Engineering Foundation Conference, Quebec City, Canada, August.
G.A. Lesieture, G.H. Koopmann, and E.M. Mockensturm, 2001, Performance of the Stack-Driven Mechanical Diode Actuator, DARPA CHAPS Program Review, Dayton, OH, November.
P.Driesch and G.H. Koopmann, 2001, Acoustic Control in a 2D Enclosure Using Two Optimally Designed Helmholtz Resonators, 2001 ASME IMECE, New York, NY, November.
D. Lee, A.D. Belegundu, and G.H. Koopmann, 2001, Optimal Stiffener Design to Reduce Broadband Vibration and Sound Radiation, ASME IMECE, New York, NY, November.
G.H. Koopmann and A.D. Belegundu, 2001, Tuning a Wind Glass Via Material Tailoring, J. Sound and Vibration 239(4), pp. 665-678, January.
Mockensturm, E.M., J.E. Frank, G.H. Koopmann, and G.A.Lesieutre, 2001, OPTIMIZATION OF A RESONANT BIMORPH ACTUATOR DRIVE, Proceedings of DETC 01:ASME 2001 Design Engineering Technical Conferences, Pittsburgh.
Lesieutre, G.A., G.H. Koopmann, E.M. Mockensturm, J. Loverich, D. Ericson, 2001, Mechanically-Ratcheting Piezoelectric Motors, 12th International Conference on Adaptive Structures Technology, College Park, MD.
Lesieutre, G.A., G.H. Koopmann, E.M. Mockensturm, J.E. Frank, and W. Chen, 2001, Mechanical Diode Based, High-Torque Piezoelectric Rotary Motor, AIAA Adaptive Structures Forum, Seattle, WA.
Lesieutre, G.A., Koopmann, G.H., Mockensturm, E.M., Frank, J.B., Chen, W, 2001, Resonant Bimorph Driven, High-Torque Piezoelectric Rotary Motor, SPIE Smart Structures and Materials Conference, Newport Beach, CA.
E. M. Mockensturm, J. Jiang, G. H. Koopmann, G. A. Lesieutre, 2001, Modeling and simulation of a resonant bimorph actuator drive, SPIE Smart Structures and Materials Conference, Newport Beach, CA.
M. Grissom, A.D. Belegundu, and G.H. Koopmann, 2000, Constructing Objective Functions with Preference Curves Based on Practical Design Inputs: A Vibration Reduction Application, Proceedings 2000 NSF Grantees Conference.
Patricia L. Driesch, Hisao Iwata, Gary H. Koopmann, and Jeff Dosch, 2000, Development and evaluation of a surface acoustic intensity probe, Review of Scientific Instruments, 71 (11), pp. 1-6 (November).
E.W. Constans, A.D. Belegundu, and G.H. Koopmann, 2000, Optimally Designed Shell Enclosures with Tuned Absorbers for Minimizing Sound Power, Optimization and Engineering, 1, 67-86, (an International Journal, Kluwer Publishers).
M. Grissom, A. D. Belegundu, and G. H. Koopmann, 2000, Constructing Objective Functions with Preference Curves Based on Practical Design Inputs: A Vibration Reduction Application, NSF Grantees Conference, Vancouver, Canada.
G. A. Lesieutre, G. H. Koopmann, E. M. Mockensturm, W. Chen, and J. Frank, 2000, High Torque Piezoelectric Rotary MotorsInternational Center for Actuators and Transducers (ICAT) Annual Workshop, State College, PA. (April).
E. M. Mockensturm, J. Jiang, G. H. Koopmann, and G. A. Lesieutre, 2000, Modeling and Simulation of a Resonant Bimorph Actuator Drive, U.S. Navy Workshop on Acoustic Transduction Materials and Devices, State College, PA. (April).
G. H. Koopmann, G. A. Lesieutre, J. E. Frank, W. Chen, and E. M. Mockensturm, 2000, A High Torque Rotary Motor with a Resonant Bimorph Actuator Drive, U.S. Navy Workshop on Acoustic Transduction Materials and Devices, State College, PA. (April).
G. H. Koopmann, 2000, Optimal Acoustic Design for Structures: Methodology and Applications, 15th Conference on the Research of Sound from Machinery, Ritsumeikan University, Kusatsu, Japan (June).
G.H. Koopmann, J. E. Frank, G. A. Lesieutre, and W. Chen, 2000, Development of a High Torque Rotary Motor Driven by Piezoelectric Bimorphs, ICAT 2000, Tokyo (July).
J. E. Frank, G. H. Koopmann, W. Chen, E. M. Mockensturm, and G. A. Lesieutre, 2000, Design and Performance of a Resonant Roller Wedge Actuator, SPIE Smart Structures and Materials Conference: Smart Structures and Integrated Systems, Newport Beach, CA (March).
G. H. Koopmann, 2000, Optimal Acoustic Design for Structures: Methodology and Applications, First International Workshop of the Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology (June).
Galante, T., J. Frank, J. Bernard, W. Chen, G.A. Lesieutre, and G.H. Koopmann, 2000, A High-Force, High-Displacement Piezoelectric Inchworm Actuator,", Journal of Intelligent Materials Systems and Structures, Vol. 10, No. 12, December, pp. 962-972. (Supervisor, Contributing Author.).
Koopmann, G.H., G.A. Lesieutre, J. Frank, and W. Chen, 2000, Design and Performance of a Linear Piezoelectric Wedgeworm Actuator, Piezoelectric Materials: Advances in Science, Technology and Applications, C. Galassi et al. (eds), Kluwer Academic Publishers, pp. 383-390.
J.E. Frank, G. H. Koopmann, W. Chen, and G.A. Lesieutre, 1999, Design and Performance of a High Force Piezoelectric Inchworm Actuator, Proceedings of SPIE 6th Annual International Symposium on Smart Structures and Materials.
G.A. Lesieutre and G.H. Koopmann, 1999, Roller Wedgeworm: A Piezoelectrically Driven Rotary Motor, 10th International Conference on Adaptive Structures and Technologies (October).
S. Canfield, B. Peterson, M.I. Frecker, and G.H. Koopmann, 1999, Design of Piezoelectric Inchworm Actuator and Compliant End-Effector for Minimally Invasive Surgery, Proceedings of SPIE 6th Annual International Symposium on Smart Structures and Materials.
J.E. Frank, G.H. Koopmann, W. Chen, and G.A. Lesieutre, 1999, Design and Performance of High-Force, High-Displacement Piezoelectric Wedgeworm Actuators, NATO Advanced Research Workshop.
Huang, W., G.H. Koopmann, S.J. Sharp, and W. Chen, 1999, Enhanced Low Frequency Transmission Loss of Light Weight Trim Panels Using PZT Inertial Actuators, Proceedings of Fourth US Army Research Office Smart Structure Workshop, presenter (August).
E.W. Constans, A.D. Belegundu, and G.H. Koopmann, 1999, Optimally Designed Shell Enclosures with Tuned Absorbers for Minimizing Sound Power, Optimization and Engineering (in print), Kluwer.
Iwata, Hisao, P. L. Driesch, and G.H. Koopmann, 1999, Quantifying of Sound Power Radiated from Walls of Refrigerator With Surface Intensity Probe, Proceedings NoiseCon 99 (December).
Lesieutre, G.A., and G.H. Koopmann, 1999, High Force Piezoelectric Linear Stepping Motors, Engineered Adaptive Structures for Noise and Vibration Control, Barga, Italy.
Frank, J.E., G.A. Lesieutre, G.H. Koopmann, and W. Chen, 1999, A Piezoelectric Linear Motor (WW) at the International Center for Actuators and Transducers (ICAT) Annual Workshop," State College, PA
K. Naghshineh, W. Chen, and G.H. Koopmann, 1998, Use of Acoustic Basis Functions for Active Control of Sound Power Radiated from a Cylindrical Shell, J. Acoust. Soc. Am., 103(4), (April).
E.W. Constans, G.H. Koopmann, and A.D. Belegundu, 1998, The Use of Modal Tailoring to Minimize the Radiated Sound Power of Vibrating Shells: Theory and Experiment, JSV, 217(2).
Y.R. Ho, G.H. Koopmann, I.S. Kim, and W. Chen, 1998, Active Control of Broadband Sound Transmission Through an Airplane Trim Panel Using Hybrid Feedforward and Feedbackward Techniques, 1998 International Mechanical Engineering Congress and Exposition.
G.H. Koopmann, A.D. Belegundu, and M.W. Lesyna, 1998, Shape Optimization of a Mechanical Amplifier for use in a Piezoceramic Inchworm, 1998 ONR Transducer Materials Workshop.
P. Dreisch, and G.H. Koopmann, 1998, Development and Evaluation of a Surface Intensity Probe, 1998 International Mechanical Engineering Congress and Exposition.
Frank, J.E., G.A. Lesieutre, G.H. Koopmann, and W. Chen, 1998, A Piezoelectric Inchworm Actuator, proceedings of the annual meeting of the Acoustical Society of America.
Galante, T., J. Bernard, G.A. Lesieutre, and G.H. Koopmann, 1998, Performance of a High Force Piezoelectric Inchwormat the 1998 ONR Transducer Materials and Transducers Workshop, State College, PA.
Koopmann, G.H., G.A. Lesieutre, W. Chen, T. Galante, J. Bernard, 1998, Design, Modeling, and Performance of a High Force Piezoelectric Inchworm Motor, proceedings of the SPIE Smart Structures and Materials Conference: Passive Damping and Isolation, San Diego, CA.
A.D. Belegundu, G.H. Koopmann and E.W. Constans, Minimization of Radiated Sound Power from Vibrating Shells by Optimal Placement of Lumped Masses, Paper DETC97/VIB-3798, 16th Biennial Conference on Mechanical Vibration and Noise, Sacramento, CA. 1997.
Y.R. Ho, I.S. Kim, W. Chen, and G.H. Koopmann, 1997, Active Control of Broadband Sound Transmission Using Feedback and Feedforward Techniques, Noise-Con 97.
P. Driesch, G.H. koopmann, W. Chen, J. Dosch, and H. Iwata, 1997, Development of a Surface Intensity Probe for Active Control Applications, IMECE.
G.H. Koopmann and J.B. Fahnline, 1997, Designing Quiet Structures--a Sound Power Minimization Approach, published by Academic Press, England.
Lesieutre, G.A. and G.H. Koopmann, 1997, PSU Piezoelectric Actuators: Induced Strain, Proof-Mass, Inchwormat the Engineering Foundation Workshop on Engineered Adaptive Composite Structures for Noise and Vibration Control, Banff, Albert, Canada.
Galante, T., G.H. Koopmann, and G.A. Lesieutre, 1997, A High-Force Piezoelectric Inchworm Actuatorat the 1997 ONR Transducer Materials and Transducers Workshop, State College, PA.
T.L. Hoffmann and G.H. Koopmann, Visualization of Acoustic Particle Interaction and Agglomeration: Theory Evaluation, J. Acoust. Soc. Am., 1996.
T.L. Hoffmann and G.H. Koopmann, Visualization of Acoustic Particle Interaction and Agglomeration: Theory and Experiments, J. Acoust. Soc. Am. 99, 2130-2141, 1996.
Koopmann, G.H. and J.B. Fahnline. "A Design for a High Efficiency Sound Source Based on a Constrained Optimization Procedures." J. Russian Acoustical Society, 1995 invited paper for the Jubilee Issue - 40th Anniversary (1995).
Koopmann, G.H. G.A. Lesieutre, S. Yoshikawa, W. Chen, J.B. Fahnline, S. Pai, and B. Dershem. "Design of an Embedded Piezoceramic Actuator for Active Control Applications." SPIE Smart Structures & Materials Conference San Diego, CA (March 1995).
St. Pierre, R.L. and G.H. Koopmann. "A Design Method for Minimizing the Sound Power Radiated From Plates by Adding Optimally Sized, Discrete Masses." ASME J. Vibration and Acoustics 1995 Anniversary Issue of the Design Division (1995).
St. Pierre, R.L. and G.H. Koopmann. "A Design Method for Minimizing the Sound Power Radiated From Plates by Adding Optimally Sized, Discrete Masses." ASME J. Vibration and Acoustics vol. 117 (Special 50th Anniversary Design Issue), pp. 243-251 (June 1995).
Naghshineh, K. and G.H. Koopmann. "An Active Control Strategy for Achieving Weak Radiator Structures." J. Vib. Acous. vol. 116, pp. 31-37 (January 1994).
Salagame, R., A.D. Belegundu, and G.H. Koopmann. "Analytical Sensitivity of Acoustic Power Radiated from Plates." ASME J. Vibration and Acoustics (1994).
T. L. Hoffmann, G. H. Koopmann, 1994, A New Technique for Visualization of Acoustic Particle Agglomeration, Rev. Sci. Instrum. 65 (5), (May).
R. Sharifi, S. F. Miller, A. W. Scaroni, G. H. Koopmann, W. Chen, 1994, In Situ Monitoring of the Acoustic Agglomeration of Fly Ash Particles, Proceedings of ASME Cogen Turbo Power 1994.
Hoffmann, T.L., W. Chen, G. H. Koopmann, A. W. Scaroni, L. Song. "Experimental and Numerical Analysis of Bimodal Acoustics Agglomeration." Journal Vib. & Acous. vol. 115, n. 3, pp. 232-240 (July 1993).
McDevitt, T.E., G. H. Koopmann, and C.B. Burroughs. "Two-Channel Laser Vibrometer Techniques for Vibrational Intensity Measurements, Part I: Flexural Intensity." Journal of Vib. and Acoustics vol. 115, pp. 436-440 (October 1993).
Naghshineh, K., G. H. Koopmann. "Active Control of Sound Power Using Acoustic Basis Functions as Surface Velocity Filters." Journal Acous. Soc. America vol. 93, n. 5, pp. 2740-2752 (May 1993).
A. D. Belegundu, R. Salagame, G. H. Koopmann, K. Naghshineh, 1993, A General Optimization Approach for Minimizing Acoustic Power Using Finite Elements, presented at International Congress and Exposition (March 1-5).
Naghshineh, K., G. H. Koopmann, A. Belegundu. "Material Tailoring of Structures to Achieve a Minimum Radiation Condition." Journal Acous. Soc. Am vol. 92, n. 2, pp. 841-855 (August 1992).
L. Song, G. H. Koopmann, J. Fahnline, 1991, Active Control of the Acoustic Radiation of a Vibrating Structure Using a Superposition Formulation, J. of the Acous. Soc. of Am., Vol. 89 (6), pp. 2786-2792 (June).
G. H. Koopmann, W. Neise, and K. A. Cunefare, 1991, Fan Casing Noise Radiation, J. of Vibrations and Acoustics, Vol. 113, pp. 37-42 (January).
W. Neise, G. H. Koopmann, 1991, Active Sources in the Cutoff of Centrifugal Fans to Reduce the Blade Tones at Higher-Order Duct Mode Frequencies, J. of Vibration and Acoustics, Vol. 113, pp. 123-131 (January).
J. B. Fahnline, G. H. Koopmann, 1991, Numerical Errors Associated with the Method of Superposition for Computing Acoustic Fields, J. of the Acous. Soc. of Am., Vol. 89 (6), (June).
K. A. Cunefare, G. H. Koopmann, 1991, Global Optimum Active Noise Control: Surface and Farfield Effects, J. Acous. Soc. of Am., Vol. 90(1), pp. 365-373 (July).
J. Fahnline, and G. H. Koopmann, 1991, A Numerical Solution for the General Radiation Problem Based on the Combined Methods of Superposition and Singular-Value Decomposition, J. Acoust. Soc. Am. 90(5), 2808-2816.
S. Yavuzkurt, M. Y. Ha, G. H. Koopmann, and A. W. Scaroni, 1991, A Model of the Enhancement of Coal Combustion Using High-Intensity Acoustic Fields, J. Energy Res. Tech., Vol. 113, pp. 277-285 (December).
S. Yavuzkurt, M. Y. Ha, G. Reethof, G. H. Koopmann, and A. Scaroni, 1991, Effect of an Acoustic Field on the Combustion of Coal Particles in a Flat Flame Burner, ASME J. of Energy Resources Technology, Vol. 113, pp. 286-293 (December).
A. Scaroni, G. H. Koopmann, 1991, Fundamental Studies on Sonically Enhanced Ash Agglomeration, Proceedings of the 8th Annual Heat Engines and Gas Streams Cleanup Systems Contractors Review Meeting, DOE/METC (July 16-18).
G. H. Koopmann, L. Song, and J. Fahnline, 1989, A Method for Computing Acoustic Fields Based on The Principle of Wave Superposition, Journal of the Acoustical Society of America, 86(6), pp. 2433-2438 (December).
K. A. Cunefare, G. H. Koopmann, K. Brod, 1989, The Use of Boundary Element Method to Quantify the Radiation Efficiency of Acoustic Sources, Proceedings of the Boundary Element Methods in Engineering Conference, Cambridge, USA (August 29-31).
A. Yavuzkurt, M. Ha, G. H. Koopmann, 1989, A Model of the Enhancement of Coal Combustion Using High Intensity Acoustic Fields, Proceedings of the 26th ASME/AICHe National Heat Transfer Conference, Philadelphia, PA (August 6-9).
P. Ramachandran, A. Scaroni, G. H. Koopmann, S. Yavuzkurt, 1989, Sonic Combustion of Micronized Coal Slurry Fuels, Proceedings of the 14th International Conference on Coal & Slurry Technology, Clearwater, FL (April 24-27).
M. Ha, S. Yavuzkurt, G. H. Koopmann, 1989, Modeling of the Effects of High Intensity Acoustic Fields on the Enhancement of Heat & Mass Transfer from Spheres, Proceedings of the 26th ASME/Aiche National Heat Transfer Conference, Vol. 109 (August 6-9).
K. Brod, G. H. Koopmann, and K. Cunefare, 1988, Anwendung des Superpositionsverfahrens auf das Problem der akustischen Abstrahlung beliebiger Korper, Protschritte der Akustick, DAGA 88, Braunschweig, West Germany (March).
W. Neise, G. H. Koopmann, 1988, Active Source Cancellation of the Blade Tone Fundamental and Harmonics in Centrifugal Fans, Proceedings of Inter-Noise 1988, pp. 801-804 (August).
G. H. Koopmann, W. Neise, D. J. Fox, 1988, Active Source Cancellation of the Blade Tone Fundamental and Harmonics in Centrifugal Fans, J. of Sound and Vibration, Vol. 126 (2), pp. 209-220 (August).
C. Wright, G. H. Koopmann, 1988, A Technique to Predict the Acoustic Radiation Characteristics of an Automobile TireTire Science Technology, pp. 102-115 (October).
K. A. Cunefare, G. H. Koopmann, 1988, A Theoretical Approach to Placement and Optimization of Active Noise Control Sources on Three-Dimensional Bodies, presented at WAM '88.
K. Brod, G. H. Koopmann, 1985, Generalized Null-Field Equations for the Helmholtz Integralpublished in Integral Methods in Science and Engineering, Editors F. R. Payne, et.al., Hemisphere Publishing Corp., pp. 194-203 (March).
K. Brod, G. H. Koopmann, 1985, Zur Numerischcen Losbarkeit des Problems der Abstrahlung von Beliebig Geformten Korpern mit Hilkfe der Nullfeld-MethodeProc. DAGA, Bad Honnef: DPG GmbH, pp. 194-203.