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Bogdan I. Epureanu
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Proceedings Papers

A Sensitivity Based Heuristic for Optimal Blade Arrangement in a Linear Mistuned Rotor

Mainak Mitra, Alparslan Emrah Bayrak, Stefano Zucca, Bogdan I. Epureanu
Proc. ASME. GT2018, Volume 2D: Turbomachinery, V02DT46A007, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75542
https://doi.org/10.1115/GT2018-75542
View Paper titled, A Sensitivity Based Heuristic for Optimal Blade Arrangement in a Linear Mistuned Rotor
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Topics: Blades, Rotors, Optimization, Disks, Design, Dynamic response, Genetic algorithms, Materials properties
Proceedings Papers

Reduced Order Modeling for Multi-Stage Bladed Disks With Friction Contacts at the Flange Joint

Giuseppe Battiato, Christian M. Firrone, Teresa M. Berruti, Bogdan I. Epureanu
Proc. ASME. GT2017, Volume 7B: Structures and Dynamics, V07BT35A027, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-64814
https://doi.org/10.1115/GT2017-64814
View Paper titled, Reduced Order Modeling for Multi-Stage Bladed Disks With Friction Contacts at the Flange Joint
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Topics: Disks, Flanges, Friction, Modeling, Displacement, Engines, Aircraft, Blades, Bolted flanges, Damping
Proceedings Papers

Mistuning and Damping Experiments at Design Speed Combined With Computational Tools

Kiran D’Souza, Mike Dunn, Bogdan I. Epureanu
Proc. ASME. GT2017, Volume 7B: Structures and Dynamics, V07BT35A005, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-63287
https://doi.org/10.1115/GT2017-63287
View Paper titled, Mistuning and Damping Experiments at Design Speed Combined With Computational Tools
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Topics: Damping, Design, Hardware, Rotors, Air jets, Engines, Computation, Data acquisition systems, Data storage systems, NASA
Proceedings Papers

Reduced Order Models for Blisks With Small and Large Mistuning and Friction Dampers

Weihan Tang, Seunghun Baek, Bogdan I. Epureanu
Proc. ASME. GT2016, Volume 7A: Structures and Dynamics, V07AT32A029, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57850
https://doi.org/10.1115/GT2016-57850
View Paper titled, Reduced Order Models for Blisks With Small and Large Mistuning and Friction Dampers
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Topics: Dampers, Friction, Mode shapes, Vibration, Blades, Condensation, Damage, Damping, Disks, Dynamic response
Proceedings Papers

Effects of Contact Mistuning on Shrouded Blisk Dynamics

Mainak Mitra, Stefano Zucca, Bogdan I. Epureanu
Proc. ASME. GT2016, Volume 7A: Structures and Dynamics, V07AT32A026, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57812
https://doi.org/10.1115/GT2016-57812
View Paper titled, Effects of Contact Mistuning on Shrouded Blisk Dynamics
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Topics: Dynamics (Mechanics), Damping, Friction, Blades, Dampers, Geometry, Modeling, Statistics
Proceedings Papers

Modelling the Microslip in the Flange Joint and its Effect on the Dynamics of a Multi-Stage Bladed Disk Assembly

Christian M. Firrone, Giuseppe Battiato, Bogdan I. Epureanu
Proc. ASME. GT2016, Volume 7A: Structures and Dynamics, V07AT32A032, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57998
https://doi.org/10.1115/GT2016-57998
View Paper titled, Modelling the Microslip in the Flange Joint and its Effect on the Dynamics of a Multi-Stage Bladed Disk Assembly
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Topics: Disks, Dynamics (Mechanics), Flanges, Manufacturing, Modeling, Turbines, Aircraft engines, Damping, Deformation, Finite element model
Proceedings Papers

Forecasting Subcritical and Supercritical Flutter Using Gust Responses

Amin Ghadami, Bogdan I. Epureanu
Proc. ASME. IMECE2015, Volume 4A: Dynamics, Vibration, and Control, V04AT04A052, November 13–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2015-53105
https://doi.org/10.1115/IMECE2015-53105
View Paper titled, Forecasting Subcritical and Supercritical Flutter Using Gust Responses
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Topics: Flutter (Aerodynamics), Bifurcation, Dynamic systems, Oscillations, Stress
Proceedings Papers

Adaptive Microslip Projection (AMP) for Reduction of Frictional and Contact Non-Linearities in Shrouded Blisks

Mainak Mitra, Stefano Zucca, Bogdan I. Epureanu
Proc. ASME. GT2015, Volume 7B: Structures and Dynamics, V07BT32A032, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-43967
https://doi.org/10.1115/GT2015-43967
View Paper titled, Adaptive Microslip Projection (AMP) for Reduction of Frictional and Contact Non-Linearities in Shrouded Blisks
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Topics: Blades, Boundary-value problems, Coulombs, Damping, Degrees of freedom, Design, Disks, Dynamic systems, Friction, High cycle fatigue
Proceedings Papers

A Parametric Analysis of Reduced Order Models of Potential Flows in Turbomachinery Using Proper Orthogonal Decomposition

Bogdan I. Epureanu, Earl H. Dowell, Kenneth C. Hall
Proc. ASME. GT2001, Volume 1: Aircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery, V001T03A056, June 4–7, 2001
Publisher: American Society of Mechanical Engineers
Paper No: 2001-GT-0434
https://doi.org/10.1115/2001-GT-0434
View Paper titled, A Parametric Analysis of Reduced Order Models of Potential Flows in Turbomachinery Using Proper Orthogonal Decomposition
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Topics: Flow (Dynamics), Principal component analysis, Turbomachinery, Airfoils, Cascades (Fluid dynamics), Geometry, Mach number, Dimensions, Inviscid flow, Shapes
Proceedings Papers

Nonlinear Reduced-Order Models for the Structural Dynamics of Combustor Systems With Pre-Stress and Friction

Chulwoo Jung, Bogdan I. Epureanu, Sanghum Baik, Marcus B. Huffman
Proc. ASME. IMECE2013, Volume 4A: Dynamics, Vibration and Control, V04AT04A060, November 15–21, 2013
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2013-64740
https://doi.org/10.1115/IMECE2013-64740
View Paper titled, Nonlinear Reduced-Order Models for the Structural Dynamics of Combustor Systems With Pre-Stress and Friction
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Topics: Combustion chambers, Friction, Stress, Structural dynamics, Coulombs, Plates (structures), Wear, Dynamic analysis, Dynamics (Mechanics), Finite element analysis
Proceedings Papers

High-Precision Positioning of Laser Beams for Vibration Measurements

Olguta Marinescu, Bogdan I. Epureanu
Proc. ASME. GT2013, Volume 4: Ceramics; Concentrating Solar Power Plants; Controls, Diagnostics and Instrumentation; Education; Electric Power; Fans and Blowers, V004T06A009, June 3–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: GT2013-94629
https://doi.org/10.1115/GT2013-94629
View Paper titled, High-Precision Positioning of Laser Beams for Vibration Measurements
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Topics: Laser beams, Vibration measurement, Laser Doppler vibrometers, Control equipment, Geometry, Mechanical properties, Vibration, Computer software, Density, Edge detection
Proceedings Papers

Collective Transport by Multiple Molecular Motors

Woochul Nam, Bogdan I. Epureanu
Proc. ASME. IDETC-CIE2012, Volume 1: 24th Conference on Mechanical Vibration and Noise, Parts A and B, 207-216, August 12–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: DETC2012-71226
https://doi.org/10.1115/DETC2012-71226
View Paper titled, Collective Transport by Multiple Molecular Motors
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Topics: Molecular motors, Motors, Stress, Chemical energy, Chemical reactions, Dynamics (Mechanics)
Proceedings Papers

Detection of Cracks in Mistuned Bladed Disks Using Reduced Order Models and Vibration Data

Chulwoo Jung, Akira Saito, Bogdan I. Epureanu
Proc. ASME. IDETC-CIE2011, Volume 1: 23rd Biennial Conference on Mechanical Vibration and Noise, Parts A and B, 719-728, August 28–31, 2011
Publisher: American Society of Mechanical Engineers
Paper No: DETC2011-47780
https://doi.org/10.1115/DETC2011-47780
View Paper titled, Detection of Cracks in Mistuned Bladed Disks Using Reduced Order Models and Vibration Data
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Topics: Crack detection, Disks, Vibration, Blades, Fracture (Materials), Degrees of freedom, Finite element analysis, Gas turbines, Modeling, Nonlinear equations
Proceedings Papers

A Statistical Characterization of the Effects of Mistuning in Multi-Stage Bladed Disks

Kiran X. D’Souza, Bogdan I. Epureanu
Proc. ASME. GT2011, Volume 6: Structures and Dynamics, Parts A and B, 1137-1147, June 6–10, 2011
Publisher: American Society of Mechanical Engineers
Paper No: GT2011-46698
https://doi.org/10.1115/GT2011-46698
View Paper titled, A Statistical Characterization of the Effects of Mistuning in Multi-Stage Bladed Disks
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Topics: Disks, Modeling, Coordinate measuring machines, Chaos, Design, Manufacturing, Mechanical properties
Proceedings Papers

Reduced Order Models for Blade-to-Blade Damping Variability in Mistuned Blisks

Anish G. S. Joshi, Bogdan I. Epureanu
Proc. ASME. GT2011, Volume 6: Structures and Dynamics, Parts A and B, 1033-1045, June 6–10, 2011
Publisher: American Society of Mechanical Engineers
Paper No: GT2011-45661
https://doi.org/10.1115/GT2011-45661
View Paper titled, Reduced Order Models for Blade-to-Blade Damping Variability in Mistuned Blisks
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Topics: Blades, Damping, Modeling, Energy dissipation, Coordinate measuring machines, Coatings, Engineering simulation, Excitation, Internal friction, Simulation
Proceedings Papers

Reduced-Order Models of Mistuned Cracked Bladed Disks

Olguta Marinescu, Bogdan I. Epureanu, Mihaela Banu
Proc. ASME. IMECE2010, Volume 8: Dynamic Systems and Control, Parts A and B, 459-471, November 12–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2010-38733
https://doi.org/10.1115/IMECE2010-38733
View Paper titled, Reduced-Order Models of Mistuned Cracked Bladed Disks
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Topics: Disks, Fracture (Materials), Computation, Dynamics (Mechanics), Maintenance, Modeling, Approximation, Construction, Coordinate measuring machines, Crack propagation
Proceedings Papers

Damping Identification for Mistuned Blisks

Darren E. Holland, Bogdan I. Epureanu, Sergio Filippi
Proc. ASME. IDETC-CIE2010, Volume 5: 22nd International Conference on Design Theory and Methodology; Special Conference on Mechanical Vibration and Noise, 975-986, August 15–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: DETC2010-28532
https://doi.org/10.1115/DETC2010-28532
View Paper titled, Damping Identification for Mistuned Blisks
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Topics: Damping, Filters, Noise (Sound), Disks, Frequency response, Mode shapes, Robustness, Stiffness, Density, Displacement
Proceedings Papers

Rotating Microsensors With Non-Linear Feedback

Andrew R. Sloboda, Bogdan I. Epureanu
Proc. ASME. FEDSM2010, ASME 2010 7th International Symposium on Fluid-Structure Interactions, Flow-Sound Interactions, and Flow-Induced Vibration and Noise: Volume 3, Parts A and B, 1089-1097, August 1–5, 2010
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM-ICNMM2010-30751
https://doi.org/10.1115/FEDSM-ICNMM2010-30751
View Paper titled, Rotating Microsensors With Non-Linear Feedback
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Topics: Feedback, Microsensors, Sensors, Damping, Biological agents, Cantilever beams, Design, Flow (Dynamics), Fluid dynamics, Fluid structure interaction
Proceedings Papers

Testing and Calibration Procedures for Mistuning Identification and Traveling Wave Excitation of Blisks

Darren E. Holland, Sergio Filippi, Matthew P. Castanier, Steven L. Ceccio, Bogdan I. Epureanu
Proc. ASME. GT2009, Volume 6: Structures and Dynamics, Parts A and B, 397-409, June 8–12, 2009
Publisher: American Society of Mechanical Engineers
Paper No: GT2009-59671
https://doi.org/10.1115/GT2009-59671
View Paper titled, Testing and Calibration Procedures for Mistuning Identification and Traveling Wave Excitation of Blisks
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Topics: Calibration, Excitation, Testing, Traveling waves, Blades, Algorithms, Degrees of freedom, Disks, Finite element model, Noise (Sound)
Proceedings Papers

Optimally Designed Nonlinear Feedback Excitation for High-Sensitivity Sensing

Andrew R. Sloboda, Bogdan I. Epureanu
Proc. ASME. SMASIS2009, Volume 1: Active Materials, Mechanics and Behavior; Modeling, Simulation and Control, 475-483, September 21–23, 2009
Publisher: American Society of Mechanical Engineers
Paper No: SMASIS2009-1329
https://doi.org/10.1115/SMASIS2009-1329
View Paper titled, Optimally Designed Nonlinear Feedback Excitation for High-Sensitivity Sensing
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Topics: Excitation, Feedback, Sensors, Attractors, Deformation, Bifurcation, Control equipment, Design, Limit cycles, Microsensors