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Journal Articles

Regression-Based Modeling of a Fleet of Gas Turbine Engines for Performance Trending

S. Borguet, O. Léonard, P. Dewallef

Publisher: ASME

J. Eng. Gas Turbines Power. February 2016, 138(2): 021201.

Paper No: GTP-15-1273

https://doi.org/10.1115/1.4031253

Published Online: September 1, 2015

View Article titled, Regression-Based Modeling of a Fleet of Gas Turbine Engines for Performance Trending

Topics: Engines, Modeling, Sensors, Flight, Gas turbines

Proceedings Papers

Regression-Based Modelling of a Fleet of Gas Turbine Engines for Performance Trending

S. Borguet, O. Léonard, P. Dewallef

Proc. ASME. GT2015, Volume 6: Ceramics; Controls, Diagnostics and Instrumentation; Education; Manufacturing Materials and Metallurgy; Honors and Awards, V006T05A004, June 15–19, 2015

Publisher: American Society of Mechanical Engineers

Paper No: GT2015-42330

https://doi.org/10.1115/GT2015-42330

View Paper titled, Regression-Based Modelling of a Fleet of Gas Turbine Engines for Performance Trending

Topics: Gas turbines, Modeling, Engines

Proceedings Papers

Design Method for Subsonic and Transonic Cascade With Prescribed Mach Number Distribution

O. Léonard, R. A. Van Den Braembussche

Proc. ASME. GT1991, Volume 1: Turbomachinery, V001T01A005, June 3–6, 1991

Publisher: American Society of Mechanical Engineers

Paper No: 91-GT-018

https://doi.org/10.1115/91-GT-018

View Paper titled, Design Method for Subsonic and Transonic Cascade With Prescribed Mach Number Distribution

Topics: Cascades (Fluid dynamics), Design methodology, Mach number, Blades, Flow (Dynamics), Geometry, Pressure, Design, Boundary-value problems, Shapes

Proceedings Papers

Inverse Design of Compressor and Turbine Blades at Transonic Flow Conditions

O. Léonard, R. A. Van den Braembussche

Proc. ASME. GT1992, Volume 1: Turbomachinery, V001T01A135, June 1–4, 1992

Publisher: American Society of Mechanical Engineers

Paper No: 92-GT-430

https://doi.org/10.1115/92-GT-430

View Paper titled, Inverse Design of Compressor and Turbine Blades at Transonic Flow Conditions

Topics: Compressors, Design, Transonic flow, Turbine blades, Blades, Shapes, Boundary layers, Cascades (Fluid dynamics), Computational methods, Degrees of freedom

Proceedings Papers

Analysis Versus Synthesis for Trending of Gas-Path Measurement Time Series

S. Borguet, O. Léonard, P. Dewallef

Proc. ASME. GT2014, Volume 6: Ceramics; Controls, Diagnostics and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T06A012, June 16–20, 2014

Publisher: American Society of Mechanical Engineers

Paper No: GT2014-26029

https://doi.org/10.1115/GT2014-26029

View Paper titled, Analysis Versus Synthesis for Trending of Gas-Path Measurement Time Series

Topics: Time series, Signals, Filters, Noise (Sound), Engines, Delays, Filtration, Flaw detection, Low-pass filters, Shapes

Journal Articles

Analysis Versus Synthesis for Trending of Gas-Path Measurement Time Series

S. Borguet, O. Léonard, P. Dewallef

Publisher: ASME

J. Eng. Gas Turbines Power. February 2015, 137(2): 022603.

Paper No: GTP-14-1389

https://doi.org/10.1115/1.4028385

Published Online: September 16, 2014

View Article titled, Analysis Versus Synthesis for Trending of Gas-Path Measurement Time Series

Topics: Filters, Signals

Journal Articles

Constrained Sparse Estimation for Improved Fault Isolation

S. Borguet, O. Léonard

Publisher: ASME

J. Eng. Gas Turbines Power. December 2011, 133(12): 121602.

https://doi.org/10.1115/1.4004013

Published Online: September 1, 2011

View Article titled, Constrained Sparse Estimation for Improved Fault Isolation

Topics: Algorithms, Engines, Flow (Dynamics), Quadratic programming, Compressors, Stators

Journal Articles

Toward a High Order Throughflow––Investigation of the Nonlinear Harmonic Method Coupled With an Immersed Boundary Method for the Modeling of the Circumferential Stresses

J. P. Thomas, O. Léonard

Publisher: ASME

J. Turbomach. January 2012, 134(1): 011017.

https://doi.org/10.1115/1.4003256

Published Online: May 31, 2011

View Article titled, Toward a High Order Throughflow––Investigation of the Nonlinear Harmonic Method Coupled With an Immersed Boundary Method for the Modeling of the Circumferential Stresses

Topics: Blades, Cylinders, Flow (Dynamics), Fourier series, Hoop stress, Modeling, Turbomachinery, Computation

Journal Articles

A Study on Engine Health Monitoring in the Frequency Domain

S. Borguet, M. Henriksson, T. McKelvey, O. Léonard

Publisher: ASME

J. Eng. Gas Turbines Power. August 2011, 133(8): 081604.

https://doi.org/10.1115/1.4002832

Published Online: April 8, 2011

View Article titled, A Study on Engine Health Monitoring in the Frequency Domain

Topics: Engines, Signals, Flow (Dynamics), Transients (Dynamics)

Journal Articles

A Sparse Estimation Approach to Fault Isolation

S. Borguet, O. Léonard

Publisher: ASME

J. Eng. Gas Turbines Power. February 2010, 132(2): 021601.

https://doi.org/10.1115/1.3156815

Published Online: November 4, 2009

View Article titled, A Sparse Estimation Approach to Fault Isolation

Topics: Algorithms, Engines, Flow (Dynamics), Quadratic programming, Jet engines, Turbofans

Journal Articles

On the Role of the Deterministic and Circumferential Stresses in Throughflow Calculations

J.-F. Simon, J. P. Thomas, O. Léonard

Publisher: ASME

J. Turbomach. July 2009, 131(3): 031019.

https://doi.org/10.1115/1.2992514

Published Online: April 20, 2009

View Article titled, On the Role of the Deterministic and Circumferential Stresses in Throughflow Calculations

Topics: Blades, Computation, Entropy, Flow (Dynamics), Hoop stress, Stress, Simulation, Compressors, Navier-Stokes equations, Wakes

Journal Articles

A Generalized Likelihood Ratio Test for Adaptive Gas Turbine Performance Monitoring

S. Borguet, O. Léonard

Publisher: ASME

J. Eng. Gas Turbines Power. January 2009, 131(1): 011601.

https://doi.org/10.1115/1.2967493

Published Online: October 13, 2008

View Article titled, A Generalized Likelihood Ratio Test for Adaptive Gas Turbine Performance Monitoring

Topics: Algorithms, Engines, Gas turbines, Kalman filters, Wear

Journal Articles

Ten Years of Experience With a Small Jet Engine as a Support for Education

O. Léonard, J. P. Thomas, S. Borguet

Publisher: ASME

J. Eng. Gas Turbines Power. January 2009, 131(1): 012303.

https://doi.org/10.1115/1.2967487

Published Online: October 10, 2008

View Article titled, Ten Years of Experience With a Small Jet Engine as a Support for Education

Topics: Compressors, Engines, Flow (Dynamics), Fuels, Jet engines, Nozzles, Pressure, Turbines, Thrust, Students

Journal Articles

A Way to Deal With Model-Plant Mismatch for a Reliable Diagnosis in Transient Operation

S. Borguet, P. Dewallef, O. Léonard

Publisher: ASME

J. Eng. Gas Turbines Power. May 2008, 130(3): 031601.

https://doi.org/10.1115/1.2833491

Published Online: March 26, 2008

View Article titled, A Way to Deal With Model-Plant Mismatch for a Reliable Diagnosis in Transient Operation

Topics: Engines, Transients (Dynamics), Kalman filters, Errors, Algorithms

Journal Articles

A Sensor-Fault-Tolerant Diagnosis Tool Based on a Quadratic Programming Approach

S. Borguet, O. Léonard

Publisher: ASME

J. Eng. Gas Turbines Power. March 2008, 130(2): 021605.

https://doi.org/10.1115/1.2772637

Published Online: March 5, 2008

View Article titled, A Sensor-Fault-Tolerant Diagnosis Tool Based on a Quadratic Programming Approach

Topics: Sensors, Engines, Kalman filters, Algorithms

Journal Articles

Combining Classification Techniques With Kalman Filters for Aircraft Engine Diagnostics

P. Dewallef, C. Romessis, O. Léonard, K. Mathioudakis

Publisher: ASME

J. Eng. Gas Turbines Power. April 2006, 128(2): 281–287.

https://doi.org/10.1115/1.2056507

Published Online: March 1, 2004

View Article titled, Combining Classification Techniques With Kalman Filters for Aircraft Engine Diagnostics

Topics: Kalman filters, Algorithms