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Nathan O’Nora
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Proceedings Papers

Experimental and Analytical Investigation of Cyclic Crack Initiation in Nickel Based Super Alloy With Stress Concentration Features

Alex Torkaman, Steve Fiebiger, Nathan O’Nora, Devin O’Neal, Ali Gordon
Proc. ASME. GT2021, Volume 9B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V09BT26A009, June 7–11, 2021
Paper No: GT2021-59608
DOI: https://doi.org/10.1115/GT2021-59608
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Topics: Alloys, Fracture (Materials), Nickel, Stress concentration, Turbine blades
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
Paper No: GT2020-16244
DOI: https://doi.org/10.1115/GT2020-16244
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Topics: Modeling, Superalloys, Viscoplasticity
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
Paper No: GT2019-91695
DOI: https://doi.org/10.1115/GT2019-91695
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Topics: Alloys, Creep, Fatigue, Modeling, Hardening, Stress, Fittings, High temperature, Kinematics, Engineering simulation
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
Paper No: GT2019-91056
DOI: https://doi.org/10.1115/GT2019-91056
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Topics: Lasers, Metals, Modeling, Additive manufacturing, Aerospace industry, Die cutting, Fatigue, Gas turbines, Shearing (Deformation), Aircraft engines
Proceedings Papers

Modeling the Influence of Build Orientation on the Monotonic and Cyclic Response of Additively Manufactured Stainless Steel GP1/17-4PH

Sanna F. Siddiqui, Nathan O’Nora, Abiodun A. Fasoro, Ali P. Gordon
Proc. ASME. IMECE2017, Volume 14: Emerging Technologies; Materials: Genetics to Structures; Safety Engineering and Risk Analysis, V014T11A003, November 3–9, 2017
Paper No: IMECE2017-71561
DOI: https://doi.org/10.1115/IMECE2017-71561
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Topics: Additive manufacturing, Modeling, Stainless steel, Equipment performance, Failure, Low cycle fatigue, Manufacturing, Approximation, Constitutive equations, Design