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Henning Almstedt
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Proceedings Papers

Creep-Fatigue Life Assessment Technique for Steam Turbine Rotors: An Efficient Continuum Damage Mechanics Based Approach

Suvadeep Sen, Henning Almstedt
Proc. ASME. GT2024, Volume 9: Manufacturing Materials and Metallurgy; Microturbines, Turbochargers, and Small Turbomachines; Oil & Gas Applications; Steam Turbine, V009T20A010, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-126297
https://doi.org/10.1115/GT2024-126297
View Paper titled, Creep-Fatigue Life Assessment Technique for Steam Turbine Rotors: An Efficient Continuum Damage Mechanics Based Approach
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Topics: Creep, Damage, Damage mechanics, Fatigue, Rotors, Steam turbines
Journal Articles

Constitutive Model-Based Efficient Creep-Fatigue Damage Computation Technique for Steam Turbine Rotors to Enhance Flexible Operational Capabilities

Suvadeep Sen, Henning Almstedt
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. December 2023, 145(12): 121007.
Paper No: GTP-23-1313
https://doi.org/10.1115/1.4063312
Published Online: October 17, 2023
View Article titled, Constitutive Model-Based Efficient Creep-Fatigue Damage Computation Technique for Steam Turbine Rotors to Enhance Flexible Operational Capabilities
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Topics: Computation, Constitutive equations, Creep, Cycles, Damage, Fatigue, Finite element methods, Rotors, Steam turbines, Stress
Proceedings Papers

Constitutive Model Based Efficient Creep-Fatigue Damage Computation Technique for Steam Turbine Rotors to Enhance Flexible Operational Capabilities

Suvadeep Sen, Henning Almstedt
Proc. ASME. GT2023, Volume 10: Steam Turbine, V010T20A005, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101142
https://doi.org/10.1115/GT2023-101142
View Paper titled, Constitutive Model Based Efficient Creep-Fatigue Damage Computation Technique for Steam Turbine Rotors to Enhance Flexible Operational Capabilities
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Topics: Computation, Constitutive equations, Creep, Damage, Fatigue, Rotors, Steam turbines
Journal Articles

Detection of Cracks in Turbomachinery Blades by Online Monitoring

Manish Kumar, Roger Heinig, Mark Cottrell, Christian Siewert, Henning Almstedt, Drew Feiner, Jerry Griffin
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2023, 145(4): 041023.
Paper No: GTP-20-1830
https://doi.org/10.1115/1.4053705
Published Online: February 27, 2023
View Article titled, Detection of Cracks in Turbomachinery Blades by Online Monitoring
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Topics: Blades, Fracture (Materials)
Proceedings Papers

Improved Rotor Design With Combined 3D-2D Probabilistic Approach

Lukas Schuchard, Matthias Voigt, Ronald Mailach, Peter Dumstorff, Armin de Lazzer, Henning Almstedt
Proc. ASME. GT2021, Volume 9B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V09BT27A002, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-58620
https://doi.org/10.1115/GT2021-58620
View Paper titled, Improved Rotor Design With Combined 3D-2D Probabilistic Approach
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Topics: Design, Rotors, Blades, Stress, Transients (Dynamics), Steam turbines, Thermomechanics, Boundary-value problems, Low cycle fatigue, Pressure
Proceedings Papers

Detection of Cracks in Turbomachinery Blades by Online Monitoring

Manish Kumar, Roger Heinig, Mark Cottrell, Christian Siewert, Henning Almstedt, Drew Feiner, Jerry Griffin
Proc. ASME. GT2020, Volume 9: Oil and Gas Applications; Organic Rankine Cycle Power Systems; Steam Turbine, V009T23A016, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14813
https://doi.org/10.1115/GT2020-14813
View Paper titled, Detection of Cracks in Turbomachinery Blades by Online Monitoring
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Topics: Blades, Crack detection, Turbomachinery, Fracture (Materials), Inspection, Oscillating frequencies, Rotors, Separation (Technology)
Proceedings Papers

Competitive Bidding by Surrogate Modeling of Steam Parameter Influence on the Attainable Start Numbers of Turbine Casings

Marcel Seiler, Vitali Züch, Peter Dumstorff, Henning Almstedt
Proc. ASME. GT2020, Volume 9: Oil and Gas Applications; Organic Rankine Cycle Power Systems; Steam Turbine, V009T23A008, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14556
https://doi.org/10.1115/GT2020-14556
View Paper titled, Competitive Bidding by Surrogate Modeling of Steam Parameter Influence on the Attainable Start Numbers of Turbine Casings
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Topics: Modeling, Steam, Turbines
Proceedings Papers

Application and Verification of an Engineering Approach to Assess Notch Support for Low Cycle Fatigue Loadings

Florian Garnadt, Christian Kontermann, Henning Almstedt, Matthias Oechsner
Proc. ASME. GT2020, Volume 10B: Structures and Dynamics, V10BT27A020, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15402
https://doi.org/10.1115/GT2020-15402
View Paper titled, Application and Verification of an Engineering Approach to Assess Notch Support for Low Cycle Fatigue Loadings
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Topics: Cycles, Design, Failure, Finite element analysis, Fracture (Materials), Low cycle fatigue, Plasticity, Steel, Stress
Proceedings Papers

Advanced Steam Turbine Technology for Unique Double Reheat Steam Power Plant Layout

Benjamin Kloss-Grote, Michael Wechsung, Rainer Quinkertz, Henning Almstedt
Proc. ASME. GT2019, Volume 8: Microturbines, Turbochargers, and Small Turbomachines; Steam Turbines, V008T29A021, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90934
https://doi.org/10.1115/GT2019-90934
View Paper titled, Advanced Steam Turbine Technology for Unique Double Reheat Steam Power Plant Layout
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Topics: Steam turbines, Thermal power stations, Turbines, Pressure, Trains, Design, Generators, Temperature, Carbon dioxide, Oxidation
Proceedings Papers

Innovative Mechanical Integrity Approaches for Steam Turbines: Industrial Needs

Henning Almstedt, Zeynep Yiğit-Rohde, Jürgen Havemann, Thomas Thiemann, Martin Stadler
Proc. ASME. GT2019, Volume 8: Microturbines, Turbochargers, and Small Turbomachines; Steam Turbines, V008T29A029, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-91633
https://doi.org/10.1115/GT2019-91633
View Paper titled, Innovative Mechanical Integrity Approaches for Steam Turbines: Industrial Needs
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Topics: Steam turbines, Acceptance criteria, Design, Design methodology, Dimensions, Fracture mechanics, High pressure (Physics), Life cycle costing, Optimization, Pressure vessels
Journal Articles

On the Evaluation and Consideration of Fracture Mechanical Notch Support Within a Creep-Fatigue Lifetime Assessment

Christian Kontermann, Henning Almstedt, Falk Müller, Matthias Oechsner
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. December 2018, 140(12): 121014.
Paper No: GTP-18-1309
https://doi.org/10.1115/1.4040733
Published Online: October 31, 2018
View Article titled, On the Evaluation and Consideration of Fracture Mechanical Notch Support Within a Creep-Fatigue Lifetime Assessment
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Topics: Fracture (Materials), Creep, Stress
Proceedings Papers

On the Evaluation and Consideration of Fracture Mechanical Notch Support Within a Creep Fatigue Lifetime Assessment

Christian Kontermann, Henning Almstedt, Falk Müller, Matthias Oechsner
Proc. ASME. GT2018, Volume 8: Microturbines, Turbochargers, and Small Turbomachines; Steam Turbines, V008T29A015, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75681
https://doi.org/10.1115/GT2018-75681
View Paper titled, On the Evaluation and Consideration of Fracture Mechanical Notch Support Within a Creep Fatigue Lifetime Assessment
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Topics: Creep, Fatigue, Fracture (Materials), Fracture (Process), Finite element methods, Finite element model, Steam turbines
Proceedings Papers

Setup, Validation and Probabilistic Robustness Estimation of a Model for Prediction of LCF in Steam Turbine Rotors

David Pusch, Matthias Voigt, Konrad Vogeler, Peter Dumstorff, Henning Almstedt
Proc. ASME. GT2016, Volume 8: Microturbines, Turbochargers and Small Turbomachines; Steam Turbines, V008T26A031, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57321
https://doi.org/10.1115/GT2016-57321
View Paper titled, Setup, Validation and Probabilistic Robustness Estimation of a Model for Prediction of LCF in Steam Turbine Rotors
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Topics: Robustness, Rotors, Steam turbines, Boundary-value problems, Stress, Finite element model, Temperature, Transients (Dynamics), Turbines, Electromagnetic scattering
Proceedings Papers

The Role of Advanced Fracture Mechanics Evaluation Methods for Turbine Components

Henning Almstedt, Torsten-Ulf Kern, David Segletes, Michael Loehr
Proc. ASME. GT2016, Volume 8: Microturbines, Turbochargers and Small Turbomachines; Steam Turbines, V008T26A032, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57339
https://doi.org/10.1115/GT2016-57339
View Paper titled, The Role of Advanced Fracture Mechanics Evaluation Methods for Turbine Components
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Topics: Evaluation methods, Fracture mechanics, Turbine components, Fracture (Materials), Design, Ductility, Crack propagation, Dimensions, Failure, Failure mechanisms
Proceedings Papers

Efficient Multi-Objective Optimization of Labyrinth Seal Leakage in Steam Turbines Based on Hybrid Surrogate Models

Kevin Cremanns, Dirk Roos, Simon Hecker, Peter Dumstorff, Henning Almstedt, Christian Musch
Proc. ASME. GT2016, Volume 2C: Turbomachinery, V02CT45A024, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57457
https://doi.org/10.1115/GT2016-57457
View Paper titled, Efficient Multi-Objective Optimization of Labyrinth Seal Leakage in Steam Turbines Based on Hybrid Surrogate Models
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Topics: Leakage, Pareto optimization, Steam turbines, Optimization, Engineering disciplines, Power stations, Stress, Turbine components, Anisotropy, Approximation
Journal Articles

Application of an Advanced Creep–Fatigue Procedure for Flexible Design of Steam Turbine Rotors Based on Fracture Mechanics Methods

Shilun Sheng, Henning Almstedt
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2015, 137(3): 032506.
Paper No: GTP-14-1377
https://doi.org/10.1115/1.4028461
Published Online: October 7, 2014
View Article titled, Application of an Advanced Creep–Fatigue Procedure for Flexible Design of Steam Turbine Rotors Based on Fracture Mechanics Methods
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Topics: Creep, Fatigue, Fracture (Materials), Rotors, Ductility, Steam turbines, Design, Fracture mechanics, Stress
Proceedings Papers

Application of an Advanced Creep-Fatigue Procedure for Flexible Design of Steam Turbine Rotors Based on Fracture Mechanics Methods

Shilun Sheng, Henning Almstedt
Proc. ASME. GT2014, Volume 1B: Marine; Microturbines, Turbochargers and Small Turbomachines; Steam Turbines, V01BT27A020, June 16–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: GT2014-25633
https://doi.org/10.1115/GT2014-25633
View Paper titled, Application of an Advanced Creep-Fatigue Procedure for Flexible Design of Steam Turbine Rotors Based on Fracture Mechanics Methods
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Topics: Creep, Design, Fatigue, Fracture mechanics, Rotors, Steam turbines, Fracture (Materials), Ductility, High temperature, Crack propagation
Proceedings Papers

Robust Methods for Creep Fatigue Analysis of Power Plant Components Under Cyclic Transient Thermal Loading

Yevgen Kostenko, Henning Almstedt, Konstantin Naumenko, Stefan Linn, Alfred Scholz
Proc. ASME. GT2013, Volume 5B: Oil and Gas Applications; Steam Turbines, V05BT25A040, June 3–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: GT2013-95680
https://doi.org/10.1115/GT2013-95680
View Paper titled, Robust Methods for Creep Fatigue Analysis of Power Plant Components Under Cyclic Transient Thermal Loading
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Topics: Creep, Fatigue analysis, Power stations, Transients (Dynamics), Constitutive equations, Damage, High temperature, Steel, Stress, Cycles