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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

J. Eng. Gas Turbines Power. April 2023, 145(4): 041023.

Paper No: GTP-20-1830

DOI: https://doi.org/10.1115/1.4053705

Published Online: February 27, 2023

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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

Paper No: GT2021-58620

DOI: https://doi.org/10.1115/GT2021-58620

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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

Paper No: GT2020-14813

DOI: https://doi.org/10.1115/GT2020-14813

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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

Paper No: GT2020-14556

DOI: https://doi.org/10.1115/GT2020-14556

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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

Paper No: GT2020-15402

DOI: https://doi.org/10.1115/GT2020-15402

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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

Paper No: GT2019-90934

DOI: https://doi.org/10.1115/GT2019-90934

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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

Paper No: GT2019-91633

DOI: https://doi.org/10.1115/GT2019-91633

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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

J. Eng. Gas Turbines Power. December 2018, 140(12): 121014.

Paper No: GTP-18-1309

DOI: https://doi.org/10.1115/1.4040733

Published Online: October 31, 2018

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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

Paper No: GT2018-75681

DOI: https://doi.org/10.1115/GT2018-75681

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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

Paper No: GT2016-57321

DOI: https://doi.org/10.1115/GT2016-57321

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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

Paper No: GT2016-57339

DOI: https://doi.org/10.1115/GT2016-57339

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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

Paper No: GT2016-57457

DOI: https://doi.org/10.1115/GT2016-57457

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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

J. Eng. Gas Turbines Power. March 2015, 137(3): 032506.

Paper No: GTP-14-1377

DOI: https://doi.org/10.1115/1.4028461

Published Online: October 7, 2014

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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

Paper No: GT2014-25633

DOI: https://doi.org/10.1115/GT2014-25633

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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

Paper No: GT2013-95680

DOI: https://doi.org/10.1115/GT2013-95680

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Topics: Creep, Fatigue analysis, Power stations, Transients (Dynamics), Constitutive equations, Damage, High temperature, Steel, Stress, Cycles

Journal citation

NARROW

Detection of Cracks in Turbomachinery Blades by Online Monitoring

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

Detection of Cracks in Turbomachinery Blades by Online Monitoring

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

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

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

Innovative Mechanical Integrity Approaches for Steam Turbines: Industrial Needs

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

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

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

The Role of Advanced Fracture Mechanics Evaluation Methods for Turbine Components

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

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

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

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

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