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Ali P. Gordon
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Proceedings Papers

Undergraduate Hypersonics Research: the Fourth Year of the REU Site HYPER

Jeffrey L. Kauffman, Ali P. Gordon
Proc. ASME. GT2024, Volume 6: Education; Electric Power; Energy Storage; Fans and Blowers, V006T07A002, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-121717
https://doi.org/10.1115/GT2024-121717
View Paper titled, Undergraduate Hypersonics Research: the Fourth Year of the REU Site HYPER
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Topics: Turbomachinery, Undergraduate students, Aerospace engineering, Aircraft, Carbon neutrality, Career development, Computer software, Education, Energy generation, Engineering disciplines
Proceedings Papers

Temperature Margin Calculation During Finite Element Creep Simulations

William Day, Nathan O’Nora, Ali P. Gordon
Proc. ASME. GT2024, Volume 9: Manufacturing Materials and Metallurgy; Microturbines, Turbochargers, and Small Turbomachines; Oil & Gas Applications; Steam Turbine, V009T17A004, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-121776
https://doi.org/10.1115/GT2024-121776
View Paper titled, Temperature Margin Calculation During Finite Element Creep Simulations
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Topics: Creep, Damage, Finite element analysis, Rupture, Simulation, Temperature
Proceedings Papers

A Novel Multiaxial Strain-Life Approach for Nickel-Base Superalloys

Firat Irmak, Nathan O’Nora, Ali P. Gordon
Proc. ASME. GT2023, Volume 8: Industrial and Cogeneration; Manufacturing Materials and Metallurgy, V008T17A015, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103044
https://doi.org/10.1115/GT2023-103044
View Paper titled, A Novel Multiaxial Strain-Life Approach for Nickel-Base Superalloys
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Topics: Nickel, Superalloys, Stress, Fatigue, Fatigue life, High temperature, Modeling, Alloys, Anisotropy, Blades
Journal Articles

Creation of a Life Prediction Model for Combined High-Cycle Fatigue and Creep

Thomas Bouchenot, Kirtan Patel, Ali P. Gordon, Sachin Shinde
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Research Papers
J. Eng. Mater. Technol. July 2023, 145(3): 031004.
Paper No: MATS-21-1080
https://doi.org/10.1115/1.4054889
Published Online: February 20, 2023
View Article titled, Creation of a Life Prediction Model for Combined High-Cycle Fatigue and Creep
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Topics: Creep, High cycle fatigue, Stress, Fatigue
Journal Articles

A Novel Yield Criterion for Nickel-Based Superalloys

Firat Irmak, Kevin Hanekom, Alex Torkaman, Ali P. Gordon
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2023, 145(5): 051016.
Paper No: GTP-22-1364
https://doi.org/10.1115/1.4055920
Published Online: January 10, 2023
View Article titled, A Novel Yield Criterion for Nickel-Based Superalloys
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Topics: Alloys, Anisotropy, Modeling, Nickel, Superalloys, Temperature, Stress, Crystals
Journal Articles

A Comparative Study of Crystal Viscoplastic Modeling of Directionally Solidified Nickel-Base Superalloys

Navindra Wijeyeratne, Firat Irmak, Ali P. Gordon
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. February 2023, 145(2): 021017.
Paper No: GTP-22-1432
https://doi.org/10.1115/1.4055512
Published Online: November 29, 2022
View Article titled, A Comparative Study of Crystal Viscoplastic Modeling of Directionally Solidified Nickel-Base Superalloys
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Topics: Crystals, Modeling, Nickel, Simulation, Superalloys, Temperature, Stress, Viscoplasticity
Proceedings Papers

A Comparative Study of Crystal Visco-Plastic Modeling of Directionally Solidified Nickel-Base Superalloys

Navindra Wijeyeratne, Firat Irmak, Ali P. Gordon
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, V08AT24A008, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82230
https://doi.org/10.1115/GT2022-82230
View Paper titled, A Comparative Study of Crystal Visco-Plastic Modeling of Directionally Solidified Nickel-Base Superalloys
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Topics: Crystals, Modeling, Nickel, Superalloys
Proceedings Papers

Undergraduate Hypersonics Research: Lessons From Two Years of the REU Site HYPER

Jeffrey L. Kauffman, Ali P. Gordon
Proc. ASME. GT2022, Volume 5: Education; Electric Power; Fans and Blowers, V005T08A002, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-81021
https://doi.org/10.1115/GT2022-81021
View Paper titled, Undergraduate Hypersonics Research: Lessons From Two Years of the REU Site HYPER
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Topics: Undergraduate students, Students, Mentoring, Aerospace engineering, Career development, Engineers, Graduate students, Trains, Transportation systems, Turbomachinery
Proceedings Papers

A Novel Yield Criterion for Nickel-Based Superalloys

Firat Irmak, Kevin Hanekom, Alex Torkaman, Ali P. Gordon
Proc. ASME. GT2022, Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Microturbines, Turbochargers, and Small Turbomachines; Oil & Gas Applications, V007T17A022, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83274
https://doi.org/10.1115/GT2022-83274
View Paper titled, A Novel Yield Criterion for Nickel-Based Superalloys
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Topics: Nickel, Superalloys, Alloys, Crystals, Stress, Anisotropy, Gas turbines, High temperature, Solidification, Blades
Proceedings Papers

Establishing a Generic Stress-Life Framework for Single-Crystal Nickel-Base Superalloys

Firat Irmak, Sahil Karim, Nathan O’Nora, Ali P. Gordon
Proc. ASME. GT2022, Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Microturbines, Turbochargers, and Small Turbomachines; Oil & Gas Applications, V007T17A023, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83276
https://doi.org/10.1115/GT2022-83276
View Paper titled, Establishing a Generic Stress-Life Framework for Single-Crystal Nickel-Base Superalloys
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Topics: Crystals, Nickel, Stress, Superalloys, Creep, Temperature, Alloys, Damage, Fatigue, Cycles
Proceedings Papers

Statistical and Lifetime Characterization of PTFE Materials for Extreme Environments

Sannmit Shinde, Dominic Devito, Meghan Kenny, Ali P. Gordon, Zachary Poust, Jim Drago, Ming-Hang Yang, Paul Nichols
Proc. ASME. PVP2021, Volume 2: Computer Technology and Bolted Joints; Design and Analysis, V002T02A001, July 13–15, 2021
Publisher: American Society of Mechanical Engineers
Paper No: PVP2021-60521
https://doi.org/10.1115/PVP2021-60521
View Paper titled, Statistical and Lifetime Characterization of PTFE Materials for Extreme Environments
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Topics: Compressive stress, Deformation, Experimental design, Fillers (Materials), Gaskets, Leakage, Load bearing capacity, Manufacturing, Pressure, Relaxation (Physics)
Proceedings Papers

Crystal Visco-Plastic Model for Directionally Solidified Ni-Base Superalloys Under Monotonic and Low Cycle Fatigue

Navindra Wijeyeratne, Firat Irmak, Ali P. Gordon
Proc. ASME. GT2021, Volume 9B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V09BT26A008, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59581
https://doi.org/10.1115/GT2021-59581
View Paper titled, Crystal Visco-Plastic Model for Directionally Solidified Ni-Base Superalloys Under Monotonic and Low Cycle Fatigue
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Topics: Crystals, Low cycle fatigue, Modeling, Superalloys, Grain boundaries, Temperature, Anisotropy, Constitutive equations, Deformation, Gas turbines
Proceedings Papers

Comparison of Viscoplastic Modeling of an Equiaxed and Directionally Solidified Ni-Base Superalloy

Nathan O’Nora, Alex Torkaman, Ali P. Gordon
Proc. ASME. GT2020, Volume 10B: Structures and Dynamics, V10BT27A026, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-16244
https://doi.org/10.1115/GT2020-16244
View Paper titled, Comparison of Viscoplastic Modeling of an Equiaxed and Directionally Solidified Ni-Base Superalloy
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Topics: Modeling, Superalloys, Viscoplasticity
Proceedings Papers

Torsional Fatigue of Heat-Treated Direct Metal Laser Sintered Inconel 718

Sanna F. Siddiqui, Ali P. Gordon
Proc. ASME. GT2020, Volume 8: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Marine; Microturbines, Turbochargers, and Small Turbomachines, V008T18A006, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14830
https://doi.org/10.1115/GT2020-14830
View Paper titled, Torsional Fatigue of Heat-Treated Direct Metal Laser Sintered Inconel 718
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Topics: Additive manufacturing, Fatigue, Heat, Lasers, Metals
Proceedings Papers

Crystal Visco-Plastic Model for Ni-Base Superalloys Under Thermomechanical Fatigue

Navindra Wijeyeratne, Firat Irmak, Ali P. Gordon, Jun-Young Jeon
Proc. ASME. GT2020, Volume 10B: Structures and Dynamics, V10BT27A003, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14163
https://doi.org/10.1115/GT2020-14163
View Paper titled, Crystal Visco-Plastic Model for Ni-Base Superalloys Under Thermomechanical Fatigue
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Topics: Anisotropy, Crystals, Fatigue, Modeling, Superalloys, Thermomechanics, Temperature, Stress, Hardening, Simulation
Proceedings Papers

Life Prediction Modeling of Combined High-Cycle Fatigue and Creep

Thomas Bouchenot, Kirtan Patel, Ali P. Gordon, Sachin Shinde
Proc. ASME. GT2020, Volume 10B: Structures and Dynamics, V10BT27A008, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14495
https://doi.org/10.1115/GT2020-14495
View Paper titled, Life Prediction Modeling of Combined High-Cycle Fatigue and Creep
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Topics: Alloys, Creep, High cycle fatigue, Modeling
Journal Articles

A Nonstationary Uncertainty Model and Bayesian Calibration of Strain-Life Models

Arinan Dourado, Firat Irmak, Felipe A. C. Viana, Ali P. Gordon
Journal: Journal of Verification, Validation and Uncertainty Quantification
Publisher: ASME
Article Type: Research-Article
J. Verif. Valid. Uncert. March 2021, 6(1): 011002.
Paper No: VVUQ-20-1038
https://doi.org/10.1115/1.4049324
Published Online: January 7, 2021
View Article titled, A Nonstationary Uncertainty Model and Bayesian Calibration of Strain-Life Models
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Topics: Calibration, Fatigue life, Uncertainty, Errors, Alloys, Fatigue
Proceedings Papers

Modeling the Torsional Cyclic Response of Direct Metal Laser Sintered Inconel 718

Sanna F. Siddiqui, Firat Irmak, Nathan O’Nora, Ali P. Gordon
Proc. ASME. GT2019, Volume 6: Ceramics; Controls, Diagnostics, and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T24A015, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-91056
https://doi.org/10.1115/GT2019-91056
View Paper titled, Modeling the Torsional Cyclic Response of Direct Metal Laser Sintered Inconel 718
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Topics: Lasers, Metals, Modeling, Additive manufacturing, Aerospace industry, Die cutting, Fatigue, Gas turbines, Shearing (Deformation), Aircraft engines
Proceedings Papers

A Bayesian Framework for Estimation of Strain Life Lower Bounds and its Application to IN617

Arinan Dourado, Firat Irmak, Felipe A. C. Viana, Ali P. Gordon
Proc. ASME. GT2019, Volume 7A: Structures and Dynamics, V07AT31A020, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-91958
https://doi.org/10.1115/GT2019-91958
View Paper titled, A Bayesian Framework for Estimation of Strain Life Lower Bounds and its Application to IN617
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Topics: Alloys, Calibration, Combustion, Cycles, Design, Electromagnetic scattering, Failure, Fatigue life, Low cycle fatigue, Optimization
Proceedings Papers

Constitutive Modeling of TMF and Creep-Fatigue of a Ni-Base Alloy

Nathan O’Nora, Thomas Bouchenot, Grant Geiger, Ali P. Gordon
Proc. ASME. GT2019, Volume 7A: Structures and Dynamics, V07AT31A016, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-91695
https://doi.org/10.1115/GT2019-91695
View Paper titled, Constitutive Modeling of TMF and Creep-Fatigue of a Ni-Base Alloy
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Topics: Alloys, Creep, Fatigue, Modeling, Hardening, Stress, Fittings, High temperature, Kinematics, Engineering simulation