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Proc. ASME. GT2022, Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Microturbines, Turbochargers, and Small Turbomachines; Oil & Gas Applications, V007T17A024, June 13–17, 2022

Paper No: GT2022-83282

DOI: https://doi.org/10.1115/GT2022-83282

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Topics: Blades, Gas turbines, Gates (Closures), High cycle fatigue, Maintenance, Nondestructive evaluation, Titanium, Acceptance criteria, Lasers, Additive manufacturing

Proceedings Papers

Fused Deposition Modeling Fabrication Evaluation of a Ti-6Al-4V Centrifugal Compressor

Justin Warner, Dino Celli, Onome Scott-Emuakpor, Tommy George, Trevor Tomlin

Paper No: GT2022-83321

DOI: https://doi.org/10.1115/GT2022-83321

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Topics: Compressors, Manufacturing, Modeling, Printing, Metals, Polymers, Steel, Aluminum, Shrinkage (Materials), Blades

Proceedings Papers

Analyses of Damping Sustainability of Additively Manufactured Nickel Alloy Components Subjected to High Strain Loading Cycles

John P. Hollkamp, Onome Scott-Emuakpor, Dino Celli

Proc. ASME. GT2022, Volume 8A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction, V08AT23A003, June 13–17, 2022

Paper No: GT2022-81207

DOI: https://doi.org/10.1115/GT2022-81207

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Topics: Additive manufacturing, Cycles, Damping, Nickel alloys, Particulate matter, Sustainability

Proceedings Papers

Investigation of Self-Heating During Ultrasonic Fatigue Testing and Effect on Very High Cycle Fatigue Behavior of Titanium 6Al-4V

Dino A. Celli, Justin Warner, Onome Scott-Emuakpor, Tommy George

Paper No: GT2022-83443

DOI: https://doi.org/10.1115/GT2022-83443

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Topics: Fatigue testing, Heating, High cycle fatigue, Titanium, Cycles, Fatigue, Fatigue life, Heat, Gas turbines, Cooling

Journal Articles

Establishing an Acceptance Criteria for Assessing Fatigue of Additive Repair Processes

Onome Scott-Emuakpor, Luke Sheridan, Joseph Beck, Brian Runyon, Tommy George

J. Eng. Gas Turbines Power. December 2021, 143(12): 121007.

Paper No: GTP-21-1344

DOI: https://doi.org/10.1115/1.4052061

Published Online: October 4, 2021

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Topics: Acceptance criteria, Fatigue, Maintenance, Wire, Cycles, Microscopy, Stress, Fractography

Proceedings Papers

Establishing an Acceptance Criteria for Assessing Fatigue of Additive Repair Processes

Onome Scott-Emuakpor, Luke Sheridan, Joseph Beck, Brian Runyon, Tommy George

Proc. ASME. GT2021, Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy, V007T17A010, June 7–11, 2021

Paper No: GT2021-59480

DOI: https://doi.org/10.1115/GT2021-59480

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Topics: Acceptance criteria, Additive manufacturing, Airfoils, Fatigue, Gas turbines, Maintenance, Titanium

Proceedings Papers

Discrete Element Method Simulations of Additively Manufactured Components With Integrated Particle Dampers

Daniel Kiracofe, Matthew Postell, Onome Scott-Emuakpor, Brian Runyon, Tommy George, Jr.

Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT25A001, June 7–11, 2021

Paper No: GT2021-58462

DOI: https://doi.org/10.1115/GT2021-58462

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Topics: Additive manufacturing, Dampers, Discrete element methods, Particulate matter, Simulation, Damping, Geometry, Vibration, Cantilever beams, Collisions (Physics)

Journal Articles

Vibration Fatigue Assessment of Additive Manufactured Nickel Alloy With Inherent Damping

Onome Scott-Emuakpor, Luke Sheridan, Brian Runyon, Tommy George

J. Eng. Gas Turbines Power. October 2021, 143(10): 101009.

Paper No: GTP-20-1707

DOI: https://doi.org/10.1115/1.4051489

Published Online: September 3, 2021

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Topics: Damping, Fatigue, Vibration, Additive manufacturing, Stress, Vibration suppression, Fatigue life

Journal Articles

Shape Optimization of Rectangular Plates for Vibration-Based Fatigue Testing

Brandon A. Furman, Benjamin D. Hill, Emma E. German, Onome Scott-Emuakpor, Ryan B. Berke

J. Appl. Mech. September 2021, 88(9): 091001.

Paper No: JAM-21-1067

DOI: https://doi.org/10.1115/1.4050676

Published Online: April 30, 2021

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Topics: Fatigue testing, Plates (structures), Resonance, Stress, Vibration

Journal Articles

Structural Dynamic and Inherent Damping Characterization of Additively Manufactured Airfoil Components

Andrew Goldin, Onome Scott-Emuakpor, Tommy George, Brian Runyon, Richard Cobb

J. Eng. Gas Turbines Power. May 2021, 143(5): 051022.

Paper No: GTP-20-1743

DOI: https://doi.org/10.1115/1.4050022

Published Online: March 15, 2021

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Topics: Additive manufacturing, Blades, Damping, Testing, Vibration, Structural dynamics, Inspection

Proceedings Papers

Structural Dynamic and Inherent Damping Characterization of Additively Manufactured Airfoil Components

Andrew Goldin, Onome Scott-Emuakpor, Tommy George, Brian Runyon, Richard Cobb

Proc. ASME. GT2020, Volume 11: Structures and Dynamics: Structural Mechanics, Vibration, and Damping; Supercritical CO2, V011T30A018, September 21–25, 2020

Paper No: GT2020-14922

DOI: https://doi.org/10.1115/GT2020-14922

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Topics: Additive manufacturing, Airfoils, Damping, Structural dynamics, Vibration

Proceedings Papers

Vibration Fatigue Assessment of Additive Manufactured Nickel Alloy With Inherent Damping

Onome Scott-Emuakpor, Luke Sheridan, Brian Runyon, Tommy George

Proc. ASME. GT2020, Volume 8: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Marine; Microturbines, Turbochargers, and Small Turbomachines, V008T18A002, September 21–25, 2020

Paper No: GT2020-14122

DOI: https://doi.org/10.1115/GT2020-14122

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Topics: Additive manufacturing, Damping, Fatigue, Nickel alloys, Vibration

Proceedings Papers

Structural Integrity Assessments for Validating Directed Energy Deposition Repairs of Integrally Bladed Rotor

Onome Scott-Emuakpor, Brian Runyon, Tommy George, Andrew Goldin, Casey Holycross, Luke Sheridan, Dino Celli, Bryan Langley, Daniel Gillaugh, Manigandan Kannan, Sulochana Shrestha, Andrew Gyekenyesi

Proc. ASME. GT2020, Volume 10B: Structures and Dynamics, V10BT27A006, September 21–25, 2020

Paper No: GT2020-14361

DOI: https://doi.org/10.1115/GT2020-14361

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Topics: Maintenance, Rotors, Titanium

Journal Articles

Stochastic Fatigue Life Prediction Based on a Reduced Data Set

Dino Celli, M.-H. Herman Shen, Onome Scott-Emuakpor, Casey Holycross, Tommy George

J. Eng. Gas Turbines Power. March 2020, 142(3): 031017.

Paper No: GTP-19-1442

DOI: https://doi.org/10.1115/1.4045065

Published Online: February 3, 2020

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Topics: Cycles, Failure, Fatigue, Fatigue life, Stress, High cycle fatigue, Weibull distribution

Journal Articles

Assessing Additive Manufacturing Repeatability of Inherently Damped Nickel Alloy Components

Onome Scott-Emuakpor, Tommy George, Brian Runyon, Casey Holycross, Luke Sheridan, Ryan O'Hara

J. Eng. Gas Turbines Power. March 2020, 142(3): 031011.

Paper No: GTP-19-1316

DOI: https://doi.org/10.1115/1.4044314

Published Online: January 29, 2020

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Topics: Damping, Manufacturing, Additive manufacturing, Nickel alloys

Proceedings Papers

Assessing Manufacturing Repeatability of Inherently Damped Nickel Alloy Components via Forced-Response Testing

Onome Scott-Emuakpor, Tommy George, Brian Runyon, Luke Sheridan, Casey Holycross, Ryan O’Hara

Proc. ASME. GT2019, Volume 6: Ceramics; Controls, Diagnostics, and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T24A010, June 17–21, 2019

Paper No: GT2019-90945

DOI: https://doi.org/10.1115/GT2019-90945

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Topics: Manufacturing, Nickel alloys, Testing, Damping, Geometry, Displacement, Shear (Mechanics), Additive manufacturing, Lasers

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Journal citation

NARROW

Analyses of Damping Sustainability of Additively Manufactured Nickel Alloy Components Subjected to High Strain Loading Cycles

Fused Deposition Modeling Fabrication Evaluation of a Ti-6Al-4V Centrifugal Compressor

Investigation of Self-Heating During Ultrasonic Fatigue Testing and Effect on Very High Cycle Fatigue Behavior of Titanium 6Al-4V

Refinement of a High Cycle Fatigue Decision-Gate Assessment for Additively Repaired Blades

Refinement of a High Cycle Fatigue Decision-Gate Assessment for Additively Repaired Blades

Fused Deposition Modeling Fabrication Evaluation of a Ti-6Al-4V Centrifugal Compressor

Analyses of Damping Sustainability of Additively Manufactured Nickel Alloy Components Subjected to High Strain Loading Cycles

Investigation of Self-Heating During Ultrasonic Fatigue Testing and Effect on Very High Cycle Fatigue Behavior of Titanium 6Al-4V

Establishing an Acceptance Criteria for Assessing Fatigue of Additive Repair Processes

Establishing an Acceptance Criteria for Assessing Fatigue of Additive Repair Processes

Discrete Element Method Simulations of Additively Manufactured Components With Integrated Particle Dampers

Vibration Fatigue Assessment of Additive Manufactured Nickel Alloy With Inherent Damping

Shape Optimization of Rectangular Plates for Vibration-Based Fatigue Testing

Structural Dynamic and Inherent Damping Characterization of Additively Manufactured Airfoil Components

Structural Dynamic and Inherent Damping Characterization of Additively Manufactured Airfoil Components

Vibration Fatigue Assessment of Additive Manufactured Nickel Alloy With Inherent Damping

Structural Integrity Assessments for Validating Directed Energy Deposition Repairs of Integrally Bladed Rotor

Stochastic Fatigue Life Prediction Based on a Reduced Data Set

Assessing Additive Manufacturing Repeatability of Inherently Damped Nickel Alloy Components

Assessing Manufacturing Repeatability of Inherently Damped Nickel Alloy Components via Forced-Response Testing

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