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Proceedings Papers

Secure Embedded Distributed Control and Instrumentation Architecture for Aircraft Propulsion Systems: Framework, Process, Methods, Challenges, and Opportunities

Alireza R. Behbahani, John J. Costello, Mehrdad Pakmehr, Richard J. Skertic
Proc. ASME. GT2022, Volume 2: Coal, Biomass, Hydrogen, and Alternative Fuels; Controls, Diagnostics, and Instrumentation; Steam Turbine, V002T05A016, June 13–17, 2022
Paper No: GT2022-82644
https://doi.org/10.1115/GT2022-82644
View Paper titled, Secure Embedded Distributed Control and Instrumentation Architecture for Aircraft Propulsion Systems: Framework, Process, Methods, Challenges, and Opportunities
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Topics: Aerodynamics, Aerospace industry, Aircraft, Aircraft propulsion, Architecture, Computer security, Control equipment, Control systems, Cyber-attacks, Design
Proceedings Papers

Comparative Low-Cycle Fatigue Behavior of HAYNES 244 Alloy and Waspaloy

Michael G. Fahrmann
Proc. ASME. GT2021, Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy, V007T17A013, June 7–11, 2021
Paper No: GT2021-59619
https://doi.org/10.1115/GT2021-59619
View Paper titled, Comparative Low-Cycle Fatigue Behavior of HAYNES 244 Alloy and Waspaloy
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Topics: Alloys, Low cycle fatigue, Crack propagation, Fatigue, Fatigue cracks, Fracture (Materials), Fracture (Process), Gas turbines, Hardening, Heat
Proceedings Papers

Measurements to Quantify the Effect of a Reduced Flow Rate on the Performance of a Tilting Pad Journal Bearing (LBP) With Flooded Ends

Luis San Andrés, Jonathan Toner, Andy Alcantar
Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT24A007, June 7–11, 2021
Paper No: GT2021-58771
https://doi.org/10.1115/GT2021-58771
View Paper titled, Measurements to Quantify the Effect of a Reduced Flow Rate on the Performance of a Tilting Pad Journal Bearing (LBP) With Flooded Ends
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Topics: Bearings, Flow (Dynamics), Journal bearings, Stress, Temperature, Drag (Fluid dynamics), Babbitt metal, Damping, Energy efficiency, Floods
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
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

Stress Rupture Behavior of Disk Superalloys Exposed to Low-Temperature Hot Corrosion Environment

Dipankar Dua, Mohammad Khajavi, Gary White, Deepak Thirumurthy, Jaskirat Singh
Proc. ASME. GT2020, Volume 10B: Structures and Dynamics, V10BT27A002, September 21–25, 2020
Paper No: GT2020-14113
https://doi.org/10.1115/GT2020-14113
View Paper titled, Stress Rupture Behavior of Disk Superalloys Exposed to Low-Temperature Hot Corrosion Environment
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Topics: Corrosion, Disks, Low temperature, Rupture, Stress, Superalloys, Gas turbines, Turbines, Alloys, Bearings
Proceedings Papers

Development of a Constitutive Backstress Model for the Prediction of Creep and Stress Relaxation in Gas Turbine Materials

Andrew Moffat, Richard Green, Calum Ferguson, Brent Scaletta
Proc. ASME. GT2020, Volume 10B: Structures and Dynamics, V10BT27A024, September 21–25, 2020
Paper No: GT2020-16191
https://doi.org/10.1115/GT2020-16191
View Paper titled, Development of a Constitutive Backstress Model for the Prediction of Creep and Stress Relaxation in Gas Turbine Materials
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Topics: Creep, Gas turbines, Relaxation (Physics), Stress, Temperature, Fatigue, Corrosion, Fittings, Plasticity, Superalloys
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
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

Modeling Complex Contact Conditions and Their Effect on Blade Dynamics

Chiara Gastaldi, Johann Gross, Maren Scheel, Teresa M. Berruti, Malte Krack
Proc. ASME. GT2020, Volume 11: Structures and Dynamics: Structural Mechanics, Vibration, and Damping; Supercritical CO2, V011T30A011, September 21–25, 2020
Paper No: GT2020-14630
https://doi.org/10.1115/GT2020-14630
View Paper titled, Modeling Complex Contact Conditions and Their Effect on Blade Dynamics
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Topics: Blades, Dynamics (Mechanics), Modeling, Dampers, Disks, Friction, Pressure, Springs, Coulombs, Design
Proceedings Papers

On the Effect of the Gap of End Seals on Force Coefficients of a Test Integral Squeeze Film Damper: Experiments and Predictions

Luis San Andrés, Xueliang Lu, Bonjin Koo, Scott Tran
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A005, September 21–25, 2020
Paper No: GT2020-14182
https://doi.org/10.1115/GT2020-14182
View Paper titled, On the Effect of the Gap of End Seals on Force Coefficients of a Test Integral Squeeze Film Damper: Experiments and Predictions
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Topics: Dampers, Damping, Bearings, Lubricants, Rotors, Stiffness, Clearances (Engineering), Flow (Dynamics), Stress, Compressibility
Proceedings Papers

Additively Manufactured Compliant Hybrid Gas Thrust Bearing for sCO 2 Turbomachinery: Design and Proof of Concept Testing

Bugra Ertas
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A017, September 21–25, 2020
Paper No: GT2020-14959
https://doi.org/10.1115/GT2020-14959
View Paper titled, Additively Manufactured Compliant Hybrid Gas Thrust Bearing for sCO 2 Turbomachinery: Design and Proof of Concept Testing
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Topics: Additive manufacturing, Design, Testing, Thrust bearings, Turbomachinery, Bearings, Thrust, Deflection, Stiffness, Clearances (Engineering)
Proceedings Papers

A Life Prediction Model for Single-Crystal Nickel-Base Alloys Under Low-Cycle Fatigue

Firat Irmak, Navindra Wijeyeratne, Taejun Yun, Ali Gordon
Proc. ASME. GT2020, Volume 10B: Structures and Dynamics, V10BT27A005, September 21–25, 2020
Paper No: GT2020-14250
https://doi.org/10.1115/GT2020-14250
View Paper titled, A Life Prediction Model for Single-Crystal Nickel-Base Alloys Under Low-Cycle Fatigue
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Topics: Alloys, Crystals, Low cycle fatigue, Nickel, Creep, Damage, Fatigue, Superalloys, Blades, Deformation
Proceedings Papers

Low-Cycle Fatigue Life of Continuously Cyclic-Hardening Material

Zhong Zhang, Xijia Wu
Proc. ASME. GT2020, Volume 10B: Structures and Dynamics, V10BT27A021, September 21–25, 2020
Paper No: GT2020-15702
https://doi.org/10.1115/GT2020-15702
View Paper titled, Low-Cycle Fatigue Life of Continuously Cyclic-Hardening Material
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Topics: Hardening, Low cycle fatigue, Nucleation (Physics)
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
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
Proceedings Papers

Aspects of Creep Fatigue Lifetime Assessment for High Temperature Components With Accumulative Model

Stefan Linn, Christian Kontermann, Matthias Oechsner
Proc. ASME. GT2019, Volume 8: Microturbines, Turbochargers, and Small Turbomachines; Steam Turbines, V008T29A020, June 17–21, 2019
Paper No: GT2019-90909
https://doi.org/10.1115/GT2019-90909
View Paper titled, Aspects of Creep Fatigue Lifetime Assessment for High Temperature Components With Accumulative Model
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Topics: Creep, Fatigue, High temperature, Damage, Power stations, Stress, Accounting, Constitutive equations, Engineers, Fatigue damage
Proceedings Papers

A Crystal Visco-Plastic Model for Ni-Base Superalloys Under Low Cycle Fatigue

Navindra Wijeyeratne, Firat Irmak, Grant Geiger, Jun-Young Jeon, Ali Gordon
Proc. ASME. GT2019, Volume 7A: Structures and Dynamics, V07AT31A019, June 17–21, 2019
Paper No: GT2019-91903
https://doi.org/10.1115/GT2019-91903
View Paper titled, A Crystal Visco-Plastic Model for Ni-Base Superalloys Under Low Cycle Fatigue
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Topics: Crystals, Low cycle fatigue, Superalloys, Gas turbines, Matlab, Stress, Anisotropy, Blades, Constitutive equations, Deformation
Proceedings Papers

A Reduced Order Constitutive Modeling Approach for a Material Subjected to Combined Cycle Fatigue

Ali P. Gordon, Thomas Bouchenot
Proc. ASME. GT2018, Volume 7A: Structures and Dynamics, V07AT31A014, June 11–15, 2018
Paper No: GT2018-76903
https://doi.org/10.1115/GT2018-76903
View Paper titled, A Reduced Order Constitutive Modeling Approach for a Material Subjected to Combined Cycle Fatigue
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Topics: Combined cycles, Fatigue, Modeling, High temperature, Alloys, Approximation, Combustion, Constitutive equations, Creep, Design
Proceedings Papers

Improved Low Cycle Fatigue Analysis for Ni-Based Turbine Nozzles

Gianluca Maggiani, Matthew J. Roy, Simone Colantoni, Philip J. Withers
Proc. ASME. GT2018, Volume 7A: Structures and Dynamics, V07AT31A008, June 11–15, 2018
Paper No: GT2018-75974
https://doi.org/10.1115/GT2018-75974
View Paper titled, Improved Low Cycle Fatigue Analysis for Ni-Based Turbine Nozzles
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Topics: Low cycle fatigue, Nozzles, Turbines, Alloys, Cooling, Firing, Temperature, Thermomechanics, Accounting, Computation
Proceedings Papers

On the Leakage, Torque and Dynamic Force Coefficients of an Air in Oil (Wet) Annular Seal: A CFD Analysis Anchored to Test Data

Luis San Andrés, Jing Yang, Xueliang Lu
Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A046, June 11–15, 2018
Paper No: GT2018-77140
https://doi.org/10.1115/GT2018-77140
View Paper titled, On the Leakage, Torque and Dynamic Force Coefficients of an Air in Oil (Wet) Annular Seal: A CFD Analysis Anchored to Test Data
Open the PDF for On the Leakage, Torque and Dynamic Force Coefficients of an Air in Oil (Wet) Annular Seal: A CFD Analysis Anchored to Test Data in another window
Topics: Computational fluid dynamics, Leakage, Torque, Stiffness, Drag (Fluid dynamics), Pumps, Clearances (Engineering), Damping, Flow (Dynamics), Pressure
Proceedings Papers

Investigation of Stress-Strain Behavior of a Component Under Variable Frequency Non-Proportional Loading

Yifeng Hu, Gang Chen, Weizhe Wang
Proc. ASME. GT2018, Volume 7A: Structures and Dynamics, V07AT30A010, June 11–15, 2018
Paper No: GT2018-76768
https://doi.org/10.1115/GT2018-76768
View Paper titled, Investigation of Stress-Strain Behavior of a Component Under Variable Frequency Non-Proportional Loading
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Topics: Stress, Torsion, Cycles, Tension, Cylinders, Hardening
Proceedings Papers

Further Development of Modified Theta Project Creep Models With Life Fraction Hardening

W. David Day, Ali P. Gordon
Proc. ASME. GT2017, Volume 6: Ceramics; Controls, Diagnostics and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T24A007, June 26–30, 2017
Paper No: GT2017-63675
https://doi.org/10.1115/GT2017-63675
View Paper titled, Further Development of Modified Theta Project Creep Models With Life Fraction Hardening
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Topics: Creep, Hardening, Stress, Design, Temperature, Rotors, Steel, Alloys, Blades, Clearances (Engineering)