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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

Journal Articles

Measurement of Hysteresis Energy Using Digital Image Correlation With Application to Energy-Based Fatigue Life Prediction

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

J. Eng. Gas Turbines Power. September 2019, 141(9): 091018.

Paper No: GTP-18-1452

DOI: https://doi.org/10.1115/1.4044202

Published Online: July 22, 2019

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Topics: Fatigue, Fatigue life, Strain measurement, Stress, Cycles, Damage, Energy dissipation, Gas turbines, Aluminum

Journal Articles

Investigating Discrepancies in Vibration Bending Fatigue Behavior of Additively Manufactured Titanium 6Al-4V

Onome Scott-Emuakpor, Casey Holycross, Tommy George, Luke Sheridan, Emily Carper, Joseph Beck

J. Eng. Mater. Technol. October 2019, 141(4): 041002.

Paper No: MATS-18-1208

DOI: https://doi.org/10.1115/1.4042955

Published Online: March 12, 2019

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Topics: Fatigue, Fracture (Materials), Stress, Titanium, Vibration, Additive manufacturing, Uncertainty, Fatigue life

Proceedings Papers

Investigating Discrepancies in Vibration Bending Fatigue Behavior of Additively Manufactured Titanium 6Al-4V

Onome Scott-Emuakpor, Casey Holycross, Tommy George, Luke Sheridan, Emily Carper, Joseph Beck

Proc. ASME. GT2018, Volume 6: Ceramics; Controls, Diagnostics, and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T24A015, June 11–15, 2018

Paper No: GT2018-75978

DOI: https://doi.org/10.1115/GT2018-75978

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Topics: Additive manufacturing, Fatigue, Titanium, Vibration, Fatigue life, Stress, Uncertainty, Electromagnetic scattering, Density, Fracture (Materials)

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

Paper No: GT2018-75977

DOI: https://doi.org/10.1115/GT2018-75977

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Topics: Damping, Lasers, Vibration suppression, Additive manufacturing, Design, Geometry, Internal friction, Manufacturing, Optimization, Physics

Proceedings Papers

Measurement of Hysteresis Energy Using Digital Image Correlation With Application to Energy Based Fatigue Life Prediction

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

Proc. ASME. GT2018, Volume 7A: Structures and Dynamics, V07AT31A017, June 11–15, 2018

Paper No: GT2018-76973

DOI: https://doi.org/10.1115/GT2018-76973

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Topics: Fatigue life, Fatigue, Energy dissipation, High cycle fatigue, Aluminum, Damage, Damage assessment, Experimental characterization, Fatigue damage, Gas turbines

Journal Articles

Application of Noninteraction Constitutive Models for Deformation of IN617 Under Combined Extreme Environments

Thomas Bouchenot, Calvin Cole, Ali P. Gordon, Casey Holycross, Ravi C. Penmetsa

J. Eng. Mater. Technol. October 2018, 140(4): 041008.

Paper No: MATS-17-1328

DOI: https://doi.org/10.1115/1.4040223

Published Online: June 18, 2018

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Topics: Cathode ray oscilloscopes, Constitutive equations, Creep, Deformation, Fatigue, Hardening, Kinematics, Stress, Temperature, Engineering simulation

Proceedings Papers

Development of a Fatigue Damage and Lifing Assessment Method for Inconel 625 and Aluminum 6061-T6

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

Proc. ASME. GT2017, Volume 7A: Structures and Dynamics, V07AT31A006, June 26–30, 2017

Paper No: GT2017-63775

DOI: https://doi.org/10.1115/GT2017-63775

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Topics: Aluminum, Fatigue damage, Fatigue, Stress, Fracture toughness, High cycle fatigue, Cycles, Damage, Fatigue failure, Fatigue life

Proceedings Papers

As-Built Geometry and Surface Finish Effects on Fatigue and Tensile Properties of Laser Fused Titanium 6Al-4V

Onome Scott-Emuakpor, Tommy George, Emily Henry, Casey Holycross, Jeff Brown

Proc. ASME. GT2017, Volume 6: Ceramics; Controls, Diagnostics and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T24A002, June 26–30, 2017

Paper No: GT2017-63482

DOI: https://doi.org/10.1115/GT2017-63482

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Topics: Fatigue, Finishes, Geometry, Lasers, Tensile strength, Titanium, Additive manufacturing, Aerospace systems, Cooling, Ductility

Proceedings Papers

Regression Study on Variables Affecting Vibration Fatigue Behavior of Additive Manufactured Titanium 6Al-4V

Kyle Matissek, Onome Scott-Emuakpor, Tommy George, Casey Holycross, Thaddeus Crowe, Christopher Howard

Proc. ASME. GT2017, Volume 6: Ceramics; Controls, Diagnostics and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T24A014, June 26–30, 2017

Paper No: GT2017-64049

DOI: https://doi.org/10.1115/GT2017-64049

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Topics: Additive manufacturing, Fatigue, Titanium, Vibration, Gas turbines, Stress, Surface roughness, Aerospace industry, Disasters, Fracture (Materials)

Proceedings Papers

Fatigue Behavior Comparisons Between Ultrasonic and Servohydraulic Axial Testing Procedures

Onome Scott-Emuakpor, Tommy George, Casey Holycross, Jeffrey Brown, Joseph Beck

Proc. ASME. GT2016, Volume 7A: Structures and Dynamics, V07AT28A003, June 13–17, 2016

Paper No: GT2016-56387

DOI: https://doi.org/10.1115/GT2016-56387

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Topics: Fatigue, Testing, Aluminum, Cycles, Failure, High cycle fatigue, Alloys, Design, Fatigue cracks, Fatigue life

Journal Articles

Fatigue and Strength Studies of Titanium 6Al–4V Fabricated by Direct Metal Laser Sintering

Onome Scott-Emuakpor, Casey Holycross, Tommy George, Kevin Knapp, Joseph Beck

J. Eng. Gas Turbines Power. February 2016, 138(2): 022101.

Paper No: GTP-15-1306

DOI: https://doi.org/10.1115/1.4031271

Published Online: September 1, 2015

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Topics: Fatigue, Lasers, Titanium, Gas turbines, Sintering, Metals, Vibration, Manufacturing, Stress

Proceedings Papers

Fatigue and Strength Studies of Titanium 6Al-4V Fabricated by Direct Metal Laser Sintering

Onome Scott-Emuakpor, Casey Holycross, Tommy George, Kevin Knapp, Jeffery Bruns

Proc. ASME. GT2015, Volume 6: Ceramics; Controls, Diagnostics and Instrumentation; Education; Manufacturing Materials and Metallurgy; Honors and Awards, V006T21A005, June 15–19, 2015

Paper No: GT2015-42891

DOI: https://doi.org/10.1115/GT2015-42891

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Topics: Fatigue, Lasers, Metals, Sintering, Titanium, Additive manufacturing, Fatigue life, Gas turbines, Manufacturing, Design

Proceedings Papers

Material Property Determination of Vibration Fatigued DMLS and Cold-Rolled Nickel Alloys

Onome Scott-Emuakpor, Tommy George, Joseph Beck, Jeremy Schwartz, Casey Holycross, M. H. Herman Shen, Joseph Slater

Proc. ASME. GT2014, Volume 7A: Structures and Dynamics, V07AT28A008, June 16–20, 2014

Paper No: GT2014-26247

DOI: https://doi.org/10.1115/GT2014-26247

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Topics: Materials properties, Nickel alloys, Vibration, Tensile strength, Alloys, Cycles, Fatigue, Sintering, Density, Displacement

Proceedings Papers

In-Situ Study on Coaxing During Vibration-Based Bending Fatigue of Inconel 625 and 718

Onome Scott-Emuakpor, Jeremy Schwartz, Tommy George, Charles Cross, Casey Holycross, M. H. Herman Shen

Proc. ASME. GT2013, Volume 7A: Structures and Dynamics, V07AT27A003, June 3–7, 2013

Paper No: GT2013-94233

DOI: https://doi.org/10.1115/GT2013-94233

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Topics: Fatigue, Vibration, Failure, Stress, Cycles, Fatigue life, High cycle fatigue, Aerospace industry, Design, Gas turbines

Proceedings Papers

The Effect of Compressive Damage on Tensile Loading Failure of Titanium 6Al-4V

Onome Scott-Emuakpor, Tommy George, John Wertz, Casey Holycross

Proc. ASME. GT2012, Volume 7: Structures and Dynamics, Parts A and B, 255-261, June 11–15, 2012

Paper No: GT2012-69079

DOI: https://doi.org/10.1115/GT2012-69079

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Topics: Damage, Failure, Titanium, Fracture (Materials), Fracture (Process), Cycles, Compression, Data acquisition, Fatigue, Tension

Journal Articles

A Comparison of Constitutive Equations for the Energy-Based Lifing Method

John Wertz, Casey Holycross, M.-H. Herman Shen, Onome Scott-Emuakpor, Tommy George, Charles Cross

J. Eng. Mater. Technol. July 2013, 135(3): 031008.

Paper No: MATS-12-1225

DOI: https://doi.org/10.1115/1.4024116

Published Online: May 8, 2013

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Topics: Constitutive equations, Cycles, Dynamic testing (Engineering), Dynamic testing (Materials), Endurance limit, Energy dissipation, Fatigue, Fatigue life, Stress, Temperature

Journal citation

NARROW

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

Measurement of Hysteresis Energy Using Digital Image Correlation With Application to Energy-Based Fatigue Life Prediction

Investigating Discrepancies in Vibration Bending Fatigue Behavior of Additively Manufactured Titanium 6Al-4V

Investigating Discrepancies in Vibration Bending Fatigue Behavior of Additively Manufactured Titanium 6Al-4V

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

Measurement of Hysteresis Energy Using Digital Image Correlation With Application to Energy Based Fatigue Life Prediction

Application of Noninteraction Constitutive Models for Deformation of IN617 Under Combined Extreme Environments

Development of a Fatigue Damage and Lifing Assessment Method for Inconel 625 and Aluminum 6061-T6

As-Built Geometry and Surface Finish Effects on Fatigue and Tensile Properties of Laser Fused Titanium 6Al-4V

Regression Study on Variables Affecting Vibration Fatigue Behavior of Additive Manufactured Titanium 6Al-4V

Fatigue Behavior Comparisons Between Ultrasonic and Servohydraulic Axial Testing Procedures

Fatigue and Strength Studies of Titanium 6Al–4V Fabricated by Direct Metal Laser Sintering

Fatigue and Strength Studies of Titanium 6Al-4V Fabricated by Direct Metal Laser Sintering

Material Property Determination of Vibration Fatigued DMLS and Cold-Rolled Nickel Alloys

In-Situ Study on Coaxing During Vibration-Based Bending Fatigue of Inconel 625 and 718

The Effect of Compressive Damage on Tensile Loading Failure of Titanium 6Al-4V

A Comparison of Constitutive Equations for the Energy-Based Lifing Method

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