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Journal Articles

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

Onome Scott-Emuakpor, Brian Runyon, Daniel Gillaugh, Lucas Smith, Phil Johnson
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. December 2022, 144(12): 121025.
Paper No: GTP-22-1320
https://doi.org/10.1115/1.4056014
Published Online: November 23, 2022
View Article titled, Refinement of a High Cycle Fatigue Decision-Gate Assessment for Additively Repaired Blades
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Topics: Blades, High cycle fatigue, Maintenance, Lasers, Stress, Fatigue, Acceptance criteria, Cycles
Proceedings Papers

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

Onome Scott-Emuakpor, Brian Runyon, Daniel Gillaugh, Lucas Smith, Philip Johnson
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
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83282
https://doi.org/10.1115/GT2022-83282
View Paper titled, Refinement of a High Cycle Fatigue Decision-Gate Assessment for Additively Repaired Blades
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Topics: Blades, Gas turbines, Gates (Closures), High cycle fatigue, Maintenance, Nondestructive evaluation, Titanium, Acceptance criteria, Lasers, Additive manufacturing
Journal Articles

Establishing an Acceptance Criteria for Assessing Fatigue of Additive Repair Processes

Onome Scott-Emuakpor, Luke Sheridan, Joseph Beck, Brian Runyon, Tommy George
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. December 2021, 143(12): 121007.
Paper No: GTP-21-1344
https://doi.org/10.1115/1.4052061
Published Online: October 4, 2021
View Article titled, Establishing an Acceptance Criteria for Assessing Fatigue of Additive Repair Processes
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Topics: Acceptance criteria, Fatigue, Maintenance, Wire, Cycles, Microscopy, Stress, Fractography
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
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-58462
https://doi.org/10.1115/GT2021-58462
View Paper titled, Discrete Element Method Simulations of Additively Manufactured Components With Integrated Particle Dampers
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Topics: Additive manufacturing, Dampers, Discrete element methods, Particulate matter, Simulation, Damping, Geometry, Vibration, Cantilever beams, Collisions (Physics)
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
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59480
https://doi.org/10.1115/GT2021-59480
View Paper titled, Establishing an Acceptance Criteria for Assessing Fatigue of Additive Repair Processes
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Topics: Acceptance criteria, Additive manufacturing, Airfoils, Fatigue, Gas turbines, Maintenance, Titanium
Journal Articles

Vibration Fatigue Assessment of Additive Manufactured Nickel Alloy With Inherent Damping

Onome Scott-Emuakpor, Luke Sheridan, Brian Runyon, Tommy George
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. October 2021, 143(10): 101009.
Paper No: GTP-20-1707
https://doi.org/10.1115/1.4051489
Published Online: September 3, 2021
View Article titled, Vibration Fatigue Assessment of Additive Manufactured Nickel Alloy With Inherent Damping
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Topics: Damping, Fatigue, Vibration, Additive manufacturing, Stress, Vibration suppression, Fatigue life
Journal Articles

Structural Dynamic and Inherent Damping Characterization of Additively Manufactured Airfoil Components

Andrew Goldin, Onome Scott-Emuakpor, Tommy George, Brian Runyon, Richard Cobb
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2021, 143(5): 051022.
Paper No: GTP-20-1743
https://doi.org/10.1115/1.4050022
Published Online: March 15, 2021
View Article titled, Structural Dynamic and Inherent Damping Characterization of Additively Manufactured Airfoil Components
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Topics: Additive manufacturing, Blades, Damping, Testing, Vibration, Structural dynamics, Inspection
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
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14122
https://doi.org/10.1115/GT2020-14122
View Paper titled, Vibration Fatigue Assessment of Additive Manufactured Nickel Alloy With Inherent Damping
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Topics: Additive manufacturing, Damping, Fatigue, Nickel alloys, Vibration
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
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14922
https://doi.org/10.1115/GT2020-14922
View Paper titled, Structural Dynamic and Inherent Damping Characterization of Additively Manufactured Airfoil Components
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Topics: Additive manufacturing, Airfoils, Damping, Structural dynamics, 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
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14361
https://doi.org/10.1115/GT2020-14361
View Paper titled, Structural Integrity Assessments for Validating Directed Energy Deposition Repairs of Integrally Bladed Rotor
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Topics: Maintenance, Rotors, Titanium
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
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2020, 142(3): 031011.
Paper No: GTP-19-1316
https://doi.org/10.1115/1.4044314
Published Online: January 29, 2020
View Article titled, Assessing Additive Manufacturing Repeatability of Inherently Damped Nickel Alloy Components
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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
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90945
https://doi.org/10.1115/GT2019-90945
View Paper titled, Assessing Manufacturing Repeatability of Inherently Damped Nickel Alloy Components via Forced-Response Testing
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Topics: Manufacturing, Nickel alloys, Testing, Damping, Geometry, Displacement, Shear (Mechanics), Additive manufacturing, Lasers
Proceedings Papers

Investigating Damping Performance of Laser Powder Bed Fused Components With Unique Internal Structures

Onome Scott-Emuakpor, Tommy George, Brian Runyon, Casey Holycross, Bryan Langley, Luke Sheridan, Ryan O’Hara, Phil Johnson, Joseph Beck
Proc. ASME. GT2018, Volume 7C: Structures and Dynamics, V07CT35A020, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75977
https://doi.org/10.1115/GT2018-75977
View Paper titled, Investigating Damping Performance of Laser Powder Bed Fused Components With Unique Internal Structures
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Topics: Damping, Lasers, Vibration suppression, Additive manufacturing, Design, Geometry, Internal friction, Manufacturing, Optimization, Physics