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Kiran D'Souza
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Journal Articles

A broadband piezoelectric energy harvester with robust control using piecewise nonlinearity

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Accepted Manuscript
Yuqin Guan, Kiran D'Souza
Journal: Journal of Computational and Nonlinear Dynamics
Publisher: ASME
Article Type: Research-Article
J. Comput. Nonlinear Dynam.
Paper No: CND-24-1273
https://doi.org/10.1115/1.4067984
Published Online: February 22, 2025
View Articletitled, A broadband piezoelectric energy harvester with robust control using piecewise nonlinearity
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Topics: Piezoelectric energy harvesting, Robust control, Design, Cantilever beams, Energy harvesting, Resonance, Actuators, Bridges (Structures), Circuits, Control algorithms
Journal Articles

Experimental Identification of Blade Tip Rub Forces at Engine Relevant Temperatures and Speeds

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Robin Reifsnyder, Randall Mathison, Kiran D'Souza
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2025, 147(8): 081009.
Paper No: GTP-24-1718
https://doi.org/10.1115/1.4067104
Published Online: December 23, 2024
View Articletitled, Experimental Identification of Blade Tip Rub Forces at Engine Relevant Temperatures and Speeds
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Topics: Blades, Temperature, Stress, Engines, Frequency response
Proceedings Papers

A Piecewise Linear Piezoelectric Energy Harvester With Controllable Gap Size

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Yuqin Guan, Kiran D’Souza
Proc. ASME. IDETC-CIE2024, Volume 9: 20th International Conference on Multibody Systems, Nonlinear Dynamics, and Control (MSNDC), V009T09A011, August 25–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: DETC2024-142990
https://doi.org/10.1115/DETC2024-142990
View Paper titled, A Piecewise Linear Piezoelectric Energy Harvester With Controllable Gap Size
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Topics: Energy harvesting, Piezoelectric energy harvesting, Design, Cantilever beams, Resonance, Actuators, Bridges (Structures), Circuits, Control algorithms, Electromagnetic radiation
Journal Articles

Comparison of Ingestion of Different Size Hard and Soft Bodies Into a Representative Fan Assembly Model

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Rashid E. Mattar, Dushyanth Sirivolu, Kiran D'Souza
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. February 2025, 147(2): 021023.
Paper No: GTP-24-1612
https://doi.org/10.1115/1.4066604
Published Online: October 25, 2024
View Articletitled, Comparison of Ingestion of Different Size Hard and Soft Bodies Into a Representative Fan Assembly Model
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Topics: Aircraft, Blades, Damage, Manufacturing, Stress, Transients (Dynamics), Simulation, Disks, Engines
Journal Articles

Damage to a High Bypass Ratio Fan During Uncrewed Aircraft Systems Ingestions

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Kiran D'Souza, Dushyanth Sirivolu, Luis Gomez, Gerardo Olivares
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. December 2024, 146(12): 121011.
Paper No: GTP-24-1291
https://doi.org/10.1115/1.4066161
Published Online: September 5, 2024
View Articletitled, Damage to a High Bypass Ratio Fan During Uncrewed Aircraft Systems Ingestions
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Topics: Aircraft, Blades, Damage, Flight, Manufacturing, Simulation, Engines
Proceedings Papers

A New Experimental Facility for the Study of Blade Tip Rubs at Engine Relevant Temperatures

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Noah Broski, Christopher Keener, Theodore Loizos, Randall Mathison, Kiran D’Souza, Thomas Kasprow, Agnieszka M. Wusatowska-Sarnek
Proc. ASME. GT2024, Volume 10A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing, V10AT23A011, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-129413
https://doi.org/10.1115/GT2024-129413
View Paper titled, A New Experimental Facility for the Study of Blade Tip Rubs at Engine Relevant Temperatures
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Topics: Blades, Engines, Gas turbines, Temperature, Turbomachinery, Linings (Textiles), Temperature control, Design, Aircraft engines, Clearances (Engineering)
Proceedings Papers

Novel Microturbine Engine Test Stand for Rapid Assessment of New Materials and Manufacturing Procedures

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Troy Krizak, Onome Scott-Emuakpor, Philip Johnson, Kiran D’Souza
Proc. ASME. GT2024, Volume 10A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing, V10AT23A006, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-125114
https://doi.org/10.1115/GT2024-125114
View Paper titled, Novel Microturbine Engine Test Stand for Rapid Assessment of New Materials and Manufacturing Procedures
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Topics: Engines, Manufacturing, Microturbines, Testing, Turbomachinery, Design, Engine efficiency, Engineering prototypes, Failure, Hardware
Proceedings Papers

Experimental Identification of Blade Tip Rub Forces at Engine Relevant Temperatures and Speeds

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Robin Reifsnyder, Randall Mathison, Kiran D’Souza
Proc. ASME. GT2024, Volume 10B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V10BT27A036, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-129235
https://doi.org/10.1115/GT2024-129235
View Paper titled, Experimental Identification of Blade Tip Rub Forces at Engine Relevant Temperatures and Speeds
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Topics: Blades, Engines, Temperature, Clearances (Engineering), Stress, Transfer functions, Collaboration, Design, Engine efficiency, Force measurement
Proceedings Papers

Comparison of Ingestion of Different Size Hard and Soft Bodies Into a Representative Fan Assembly Model

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Rashid E. Mattar, Dushyanth Sirivolu, Kiran D’Souza
Proc. ASME. GT2024, Volume 10B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V10BT27A023, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-126793
https://doi.org/10.1115/GT2024-126793
View Paper titled, Comparison of Ingestion of Different Size Hard and Soft Bodies Into a Representative Fan Assembly Model
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Topics: Manufacturing, Damage, Aircraft, Blades, Stress, Boundary-value problems, Hazards, Ice, Jet engines, Safety
Proceedings Papers

Damage to a High Bypass Ratio Fan During UAS Ingestions

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Kiran D’Souza, Dushyanth Sirivolu, Luis Gomez, Gerardo Olivares
Proc. ASME. GT2024, Volume 10B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V10BT27A022, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-126781
https://doi.org/10.1115/GT2024-126781
View Paper titled, Damage to a High Bypass Ratio Fan During UAS Ingestions
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Topics: Damage, Aircraft, Engines, Manufacturing, Aircraft engines, Batteries, Blades, Engineering simulation, Flight, Ice
Proceedings Papers

An Optimization Method for Stiffness and Damping Mistuning Identification From Blade Tip Timing Data

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Troy Krizak, Eric Kurstak, Kiran D’Souza
Proc. ASME. GT2024, Volume 10B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V10BT27A015, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-125263
https://doi.org/10.1115/GT2024-125263
View Paper titled, An Optimization Method for Stiffness and Damping Mistuning Identification From Blade Tip Timing Data
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Topics: Blades, Damping, Optimization, Stiffness, Computer simulation, Bladed disks, Dynamics (Mechanics), System identification, Turbomachinery, Vibration
Proceedings Papers

A Bladed Disk Reduction Technique That Captures Variation in Blade Stiffness and Blade Root Joint Contacts

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Troy Krizak, Christian Maria Firrone, Giuseppe Battiato, Kiran D’Souza
Proc. ASME. GT2024, Volume 10B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V10BT27A034, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-129039
https://doi.org/10.1115/GT2024-129039
View Paper titled, A Bladed Disk Reduction Technique That Captures Variation in Blade Stiffness and Blade Root Joint Contacts
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Topics: Bladed disks, Blades, Stiffness, Manufacturing, Deflection, Degrees of freedom, Design, Disks, Elastic moduli, Engineering simulation
Journal Articles

An Optimization Method for Stiffness and Damping Mistuning Identification From Blade Tip Timing Data

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Troy Krizak, Eric Kurstak, Kiran D'Souza
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. December 2024, 146(12): 121005.
Paper No: GTP-24-1300
https://doi.org/10.1115/1.4066165
Published Online: August 23, 2024
View Articletitled, An Optimization Method for Stiffness and Damping Mistuning Identification From Blade Tip Timing Data
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Topics: Blades, Damping, Optimization, Stiffness
Journal Articles

Damping and Stiffness Mistuning Effects in a Bladed Disk With Varied Disk Coupling

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Troy Krizak, Eric Kurstak, Kiran D'Souza
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2024, 146(1): 011018.
Paper No: GTP-23-1373
https://doi.org/10.1115/1.4063542
Published Online: November 21, 2023
View Articletitled, Damping and Stiffness Mistuning Effects in a Bladed Disk With Varied Disk Coupling
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Topics: Blades, Damping, Stiffness, Disks, Bladed disks
Proceedings Papers

Simultaneous Damping and Mistuning Identification Using Nonlinear Optimization of Blade Tip Timing Data

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Eric Kurstak, Kiran D’Souza
Proc. ASME. GT2023, Volume 11B: Structures and Dynamics — Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V11BT27A021, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103214
https://doi.org/10.1115/GT2023-103214
View Paper titled, Simultaneous Damping and Mistuning Identification Using Nonlinear Optimization of Blade Tip Timing Data
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Topics: Blades, Damping, Optimization, Computer simulation, Approximation, Bladed disks, Dynamics (Mechanics), Engineering simulation, Parameter estimation, Resonance
Proceedings Papers

Damping and Stiffness Mistuning Effects in a Bladed Disk With Varied Disk Coupling

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Troy Krizak, Eric Kurstak, Kiran D’Souza
Proc. ASME. GT2023, Volume 11B: Structures and Dynamics — Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V11BT27A009, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101746
https://doi.org/10.1115/GT2023-101746
View Paper titled, Damping and Stiffness Mistuning Effects in a Bladed Disk With Varied Disk Coupling
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Topics: Bladed disks, Damping, Disks, Stiffness, Blades, Coordinate measuring machines, Engineering simulation, Modeling, Simulation
Journal Articles

Efficient Hybrid Symbolic-Numeric Computational Method for Piecewise Linear Systems With Coulomb Friction

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Amir Shahhosseini, Meng-Hsuan Tien, Kiran D'Souza
Journal: Journal of Computational and Nonlinear Dynamics
Publisher: ASME
Article Type: Research-Article
J. Comput. Nonlinear Dynam. July 2023, 18(7): 071004.
Paper No: CND-22-1307
https://doi.org/10.1115/1.4062203
Published Online: April 19, 2023
View Articletitled, Efficient Hybrid Symbolic-Numeric Computational Method for Piecewise Linear Systems With Coulomb Friction
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Topics: Coulombs, Friction, Switches, Dynamics (Mechanics), Computational methods, Equations of motion
Journal Articles

Experimental Determination of Blade Tip Rub Forces in a Multiblade System

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Robin Reifsnyder, Christopher Keener, Randall Mathison, Kiran D'Souza
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2023, 145(4): 041011.
Paper No: GTP-22-1402
https://doi.org/10.1115/1.4055884
Published Online: December 13, 2022
View Articletitled, Experimental Determination of Blade Tip Rub Forces in a Multiblade System
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Topics: Blades, Stress
Proceedings Papers

Vibration Energy Harvester With Piecewise Linear Nonlinear Oscillator and Controllable Gap Size

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Jacob Veney, Kiran D’Souza
Proc. ASME. IDETC-CIE2022, Volume 10: 34th Conference on Mechanical Vibration and Sound (VIB), V010T10A009, August 14–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: DETC2022-89948
https://doi.org/10.1115/DETC2022-89948
View Paper titled, Vibration Energy Harvester With Piecewise Linear Nonlinear Oscillator and Controllable Gap Size
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Topics: Energy harvesting, Vibration, Design, Resonance, Excitation, Biomechanics, Bridges (Structures), Energy resources, Nonlinear vibration
Proceedings Papers

Experimental Determination of Blade Tip Rub Forces in a Multi-Blade System

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Robin Reifsnyder, Chris Keener, Randall Mathison, Kiran D’Souza
Proc. ASME. GT2022, Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V08BT27A032, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83344
https://doi.org/10.1115/GT2022-83344
View Paper titled, Experimental Determination of Blade Tip Rub Forces in a Multi-Blade System
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Topics: Blades, Stress, Frequency response, Gas turbines, Physics, Rotating blades, Shaft angle encoders, Turbomachinery