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Proceedings Volume Cover

ASME 1997 International Gas Turbine and Aeroengine Congress and Exhibition

June 2–5, 1997

Orlando, Florida, USA

Conference Sponsors:

ISBN:

978-0-7918-7871-2

In This Volume

Manufacturing Materials and Metallurgy (27)
Ceramics (19)
Structures and Dynamics (70)
Controls, Diagnostics and Instrumentation (39)
Education (10)
IGTI Scholar Award (1)

Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award

Manufacturing Materials and Metallurgy

Development and Turbine Engine Performance of Three Advanced Rhenium Containing Superalloys for Single Crystal and Directionally Solidified Blades and Vanes

Robert W. Broomfield, David A. Ford, Harry K. Bhangu, Malcolm C. Thomas, Donald J. Frasier, Phil S. Burkholder, Ken Harris, Gary L. Erickson, Jacqueline B. Wahl

GT 1997; V004T12A001doi:https://doi.org/10.1115/97-GT-117

Topics: Blades , Crystals , Gas turbines , Superalloys , Engines , Alloys , Turbines , Airfoils , Nickel , Coatings

Experience in Applying the New UK Procedure for Creep Rupture Data Assessment to Gas Turbine Materials

Chris K. Bullough

GT 1997; V004T12A002doi:https://doi.org/10.1115/97-GT-118

Topics: Creep , Gas turbines , Rupture , Fittings , Errors

Failure to Achieve Hot Section Component Service Intervals: Why and What to Do About it

Steven A. Lefton, Thomas D. Burnett, Todd A. Kuntz, Steve R. Paterson

GT 1997; V004T12A003doi:https://doi.org/10.1115/97-GT-138

Topics: Failure , Corrosion , Damage , Water , Maintenance , Combustion , Compressors , Fuel oils , Fuels , Gas turbines

An On-Line Materials Database for the Design of Gas Turbine Components

Barry J. Piearcey, Chris K. Bullough

GT 1997; V004T12A004doi:https://doi.org/10.1115/97-GT-167

Topics: Databases , Design , Gas turbines , Flow (Dynamics) , Engines , Maintenance , Materials properties , Turbines

Grain Boundary Cracking and Microstructural Changes Induced by the Grinding of IN738LC Turbine Blades

Thomas J. Fitzgerald, Thomas J. Carr

GT 1997; V004T12A005doi:https://doi.org/10.1115/97-GT-168

Topics: Cracking (Materials) , Fracture (Process) , Grain boundaries , Grinding , Turbine blades , Blades , Fracture (Materials) , Melting

Environmental Degradation of Gas Turbine Materials in Steam

Y. Patel, D. Tamboli, V. H. Desai, N. S. Cheruvu

GT 1997; V004T12A006doi:https://doi.org/10.1115/97-GT-293

Topics: Gas turbines , Steam , Corrosion , Oxidation , Water , Cooling , Damage , Compressed air , Superalloys , Turbines

Variable Polarity GTAW of SMP14 Single Crystal Superalloy: Part One — Effects on Microstructure and Tensile Properties

Warren Miglietti, Jeff Benson, Fritz Blum, Philip Harms, Ros Pennefather

GT 1997; V004T12A007doi:https://doi.org/10.1115/97-GT-348

Topics: Crystals , Gas tungsten arc welding , Superalloys , Tensile strength , Alloys , Oxidation , Maintenance , Fractography , Fracture (Materials) , Fracture (Process)

Relationship Between Residual Creep Life and Microstructure of γ′ Strengthened Ni-Base Alloy for Gas Turbine Combustor Parts

S. Imano, S. Nakamura, A. Kanaya, J. Kusumoto, H. Watanabe

GT 1997; V004T12A008doi:https://doi.org/10.1115/97-GT-349

Topics: Alloys , Combustion chambers , Creep , Gas turbines , Stress , Temperature , Damage , Diffusion (Physics) , Metals , Solid solutions

Life Prediction Method Under Creep-Fatigue Loading for Gas Turbine Combustion Transition Piece of Ni-Based Superalloy N263

J. Kusumoto, H. Watanabe, A. Kanaya, K. Ichikawa, S. Sakurai

GT 1997; V004T12A009doi:https://doi.org/10.1115/97-GT-350

Topics: Combustion , Creep , Fatigue , Gas turbines , Superalloys , Surface cracks , Waves , Fracture (Materials) , Shapes , Damage

Bond Strength and Stress Measurements in Thermal Barrier Coatings

Eric H. Jordan, Maurice Gell, Doug M. Pease, Leon Shaw, David R. Clarke, Vijay Gupta, Brent Barber, Krishna Vaidyanathan

GT 1997; V004T12A010doi:https://doi.org/10.1115/97-GT-363

Topics: Bond strength , Stress , Thermal barrier coatings , Ceramics , Cycles , Lasers , Metals , Spallation (Nuclear physics) , Compressive stress , Crystals

Advances in Gas Turbine Blade Repair by Laser Welding

Ettore Gandini, Franco Agnesone, Federica Taricco, Leonardo Arrighi

GT 1997; V004T12A011doi:https://doi.org/10.1115/97-GT-365

Topics: Blades , Gas turbines , Laser welding , Maintenance , Alloys , Damage , Filler metals , Testing , Airfoils , Base metals

High Temperature Braze Repair for Compressor Blades

Hans van Esch, Ernst Herren

GT 1997; V004T12A012doi:https://doi.org/10.1115/97-GT-372

Topics: Blades , Compressors , High temperature , Maintenance , Airfoils , Corrosion , Fatigue , Fatigue strength , Gas turbines , Mechanical properties

Life Assessment of Gas Turbine Components Using Nondestructive Inspection Techniques

Kurt Walter, Wayne Greaves

GT 1997; V004T12A013doi:https://doi.org/10.1115/97-GT-373

Topics: Gas turbines , Nondestructive evaluation , Inspection , Blades , Compressors , Corrosion , Evaluation methods , Failure , Mechanical testing , Oxidation

A Study of Fatigue Crack Growth Behavior of HAYNES^® 242™ Alloy

Laxminarayana Garimella, Peter K. Liaw, George Y. Lai, Dwaine L. Klarstrom

GT 1997; V004T12A014doi:https://doi.org/10.1115/97-GT-374

Topics: Alloys , Fatigue cracks , Fracture (Materials) , Fatigue , Heat treating (Metalworking) , Scanning electron microscopy , Vacuum

Coating Life Prediction Under Cyclic Oxidation Conditions

Kwal S. Chan, N. Sastry Cheruvu, Gerald R. Leverant

GT 1997; V004T12A015doi:https://doi.org/10.1115/97-GT-389

Topics: Coatings , Oxidation , Diffusion (Physics) , Aluminum , Corrosion , Platinum , Blades , Diffusion coatings , Failure , Mechanical properties

Influence of Cooling Hole Design on In-Service Coating Degradation

Thomas J. Carr, John Dworak

GT 1997; V004T12A016doi:https://doi.org/10.1115/97-GT-423

Topics: Coating processes , Coatings , Cooling , Design , Blades , Combustion , Cycles , Metals , Temperature , Testing

The Effect of Microstructural Differences on NA₂SO₄-Induced Corrosion of Superalloy CMSX-4 at High Temperatures

Ming Li, Vimal H. Desai, N. Sastry Cheruvu

GT 1997; V004T12A017doi:https://doi.org/10.1115/97-GT-424

Topics: Corrosion , High temperature , Superalloys , Casting , Heat treating (Metalworking) , Corrosion resistance , Crystals , Blades , Heat , Aircraft engines

Development of a Corrosion Resistant Directionally Solidified Material for Land Based Turbine Blades

N. S. Cheruvu

GT 1997; V004T12A018doi:https://doi.org/10.1115/97-GT-425

Topics: Corrosion , Turbine blades , Temperature , Turbines , Blades , Mechanical properties , Alloys , Cooling , Creep , Flow (Dynamics)

Corrosion Resistant Single Crystal Superalloys for Industrial Gas Turbine Application

G. L. Erickson

GT 1997; V004T12A019doi:https://doi.org/10.1115/97-GT-426

Topics: Corrosion , Crystals , Industrial gases , Superalloys , Turbines , Alloys , Casting , Creep , Density , Engines

Extensive Industrial Gas Turbine Experience With Second Generation Single Crystal Alloy Turbine Blades

W. D. Brentnall, J. M. Aurrecoechea, C. M. Rimlinger, K. Harris, G. L. Erickson, J. B. Wahl

GT 1997; V004T12A020doi:https://doi.org/10.1115/97-GT-427

Topics: Alloys , Crystals , Industrial gases , Turbine blades , Turbines , Engines , Coatings , Airfoils , Bills of materials , Blades

Turbine Airfoil Manufacturing Technology

Charles S. Kortovich, Robert M. Garlock, Craig R. Hayes

GT 1997; V004T12A021doi:https://doi.org/10.1115/97-GT-428

Topics: Airfoils , Manufacturing technology , Turbines , Casting , Sulfur , Alloys , Crystals , Databases , Design , Desulfurization

Design of a High Efficiency Industrial Turbine Blade Utilizing Third Generation Single Crystal Alloy CMSX®-10

Michael D. Fitzpatrick, William D. Brentnall, Andrew Meier, Gary L. Erickson, Gary DeBoer

GT 1997; V004T12A022doi:https://doi.org/10.1115/97-GT-429

Topics: Alloys , Crystals , Design , Turbine blades , Turbines , Blades , Casting , Cooling , Advanced materials , Aerodynamics

Land Based Turbine Casting Initiative

Boyd A. Mueller, Allen R. Price, Kenneth S. Murphy, Gregory B. Bell

GT 1997; V004T12A023doi:https://doi.org/10.1115/97-GT-430

Topics: Casting , Turbines , Sulfur , X-rays , Alloys , Crystals , Gas turbines , Inspection , Aircraft , Cross section (Physics)

Failure Mechanisms of Coating Systems Applied to Advanced Turbine Components

Joseph A. Daleo, Donald H. Boone

GT 1997; V004T12A024doi:https://doi.org/10.1115/97-GT-486

Topics: Coating processes , Coatings , Failure mechanisms , Turbine components , Temperature , Turbines , Alloys , Base metals , Cooling systems , Engine design

Thermal Spray Manufacturing Issues in Coating IGT Hot Section Components

P. Sahoo, T. Carr, R. Martin, F. Dinh

GT 1997; V004T12A025doi:https://doi.org/10.1115/97-GT-487

Topics: Coatings , Manufacturing , Sprays , Turbines , Blades , Corrosion , Design , Engines , Gas turbines , Industrial gases

Characterization of Plasma Sprayed and Electron Beam-Physical Vapor Deposited Thermal Barrier Coatings

Z. Mutasim, C. Rimlinger, W. Brentnall

GT 1997; V004T12A026doi:https://doi.org/10.1115/97-GT-531

Topics: Electrons , Plasmas (Ionized gases) , Thermal barrier coatings , Vapors , Coatings , Bond strength , Ceramics , Chemistry , Industrial gases , Nickel alloys

Characterization of Mechanical Properties of Aluminized CoCrAlY Coatings in Advanced Gas Turbine Blades Using a Small Punch Testing Method

Y. Sugita, A. Ito, S. Sakurai, T. E. Bloomer, J. Kameda

GT 1997; V004T12A027doi:https://doi.org/10.1115/97-GT-532

Topics: Blades , Coatings , Gas turbines , Mechanical properties , Testing , Coating processes , Ductility , Temperature , Augers , Brittleness

Ceramics

Development and Fabrication of Silicon Nitride Components for Ceramic Gas Turbine

Keisuke Makino, Ken-Ichi Mizuno, Toru Shimamori

GT 1997; V004T13A001doi:https://doi.org/10.1115/97-GT-067

Topics: Ceramics , Gas turbines , Manufacturing , Silicon nitride ceramics , Turbine blades , Turbines , Nozzles , Combined heat and power , High temperature , Oxidation

Experimental Assessment of Fiber Reinforced Ceramics for Combustor Walls

D. Filsinger, S. Münz, A. Schulz, S. Wittig, G. Andrees

GT 1997; V004T13A002doi:https://doi.org/10.1115/97-GT-154

Topics: Combustion chambers , Fiber reinforced ceramics , Gas turbines , Oxidation , Ceramics , Composite materials , Flames , Gas flow , High temperature , Brittleness

Ceramic Vane Demonstration in an Industrial Turbine

Richard A. Wenglarz, Satish M. Calcuttawala, J. Edward Pope

GT 1997; V004T13A003doi:https://doi.org/10.1115/97-GT-155

Topics: Ceramics , Turbines , Engines , Stress , Temperature , Airfoils , Fracture (Materials) , Fracture (Process) , Fracture toughness , High temperature

Testing of a Full Scale, Low Emissions, Ceramic Gas Turbine Combustor

K. Smith, A. Fahme

GT 1997; V004T13A004doi:https://doi.org/10.1115/97-GT-156

Topics: Ceramics , Combustion chambers , Emissions , Gas turbines , Testing , Combustion , Nitrogen oxides , Design , Solar energy , Turbines

Development and Investigation of Ceramic Parts for Gas-Turbine Engines

Youry A. Nozhnitsky, Youlia A. Fedina, Anatoly D. Rekin, Nickolai I. Petrov

GT 1997; V004T13A005doi:https://doi.org/10.1115/97-GT-157

Topics: Ceramics , Engines , Gas turbines , Carbon , High temperature , Bearings , Combustion chambers , Generators , Heat , Mechanical testing

Reliability of a Conceptual Ceramic Gas Turbine Component Subjected to Static and Transient Thermomechanical Loading

Paul S. DiMascio, Robert M. Orenstein, Harindra Rajiyah

GT 1997; V004T13A006doi:https://doi.org/10.1115/97-GT-284

Topics: Ceramics , Gas turbines , Reliability , Thermomechanics , Transients (Dynamics) , Silicon nitride ceramics , Creep , Design , Temperature , Bending (Stress)

Ceramic Stationary Gas Turbine Development Program: Fourth Annual Summary

Mark van Roode, William D. Brentnall, Kenneth O. Smith, Bryan D. Edwards, John McClain, Jeffrey R. Price

GT 1997; V004T13A007doi:https://doi.org/10.1115/97-GT-317

Topics: Ceramics , Gas turbines , Engines , Testing , Design , Blades , Combined heat and power , Industrial ceramics , Manufacturing , Silicon nitride ceramics

Failure Probability Prediction of Fast-Fractured NT451 SiAlON Diesel Exhaust Valves

Andrew A. Wereszczak, Timothy P. Kirkland, Mattison K. Ferber, James M. Corum, Alonso Peralta

GT 1997; V004T13A008doi:https://doi.org/10.1115/97-GT-318

Topics: Diesel , Exhaust systems , Failure , Probability , Valves , Fracture (Materials) , Fracture (Process) , Machining , Geometry , Bending (Stress)

Creep Life Prediction of Ceramic Components Subjected to Transient Tensile and Compressive Stress States

Osama M. Jadaan, Lynn M. Powers, John P. Gyekenyesi

GT 1997; V004T13A009doi:https://doi.org/10.1115/97-GT-319

Topics: Compressive stress , Creep , Industrial ceramics , Transients (Dynamics) , Failure , Damage , Stress , Rupture , Ceramics , Design

Effect of Machining Conditions on the Strength Distributions of Ground Ceramics

Wataru Kanematsu, Yukihiko Yamauchi, Shoji Ito

GT 1997; V004T13A010doi:https://doi.org/10.1115/97-GT-320

Topics: Ceramics , Machining , Fracture (Materials) , Grinding , Failure , Failure mechanisms , Polishing , Probability , Silicon carbide ceramics , Stress

Status of Silicon Nitride Component Fabrication Processes, Material Properties, and Applications

John P. Pollinger

GT 1997; V004T13A011doi:https://doi.org/10.1115/97-GT-321

Topics: Manufacturing , Materials properties , Silicon nitride ceramics , Nozzles , Turbomachinery , Wheels , Aircraft , Blades , Combustion chambers , Energy generation

HIPed Silicon Nitride Components for AGATA — A European Gas Turbine for Hybrid Vehicles

Robert Lundberg

GT 1997; V004T13A012doi:https://doi.org/10.1115/97-GT-322

Topics: Gas turbines , Hybrid electric vehicles , Silicon nitride ceramics , Combustion chambers , Turbines , Wheels , Glass , Automobiles , Creep , Emissions

Research Into Mechanism of Formation of Alumo-Boron-Nitride Ceramics: A Structural Material for GTE Parts

V. V. Grishaev, A. V. Soudarev, G. P. Okatova

GT 1997; V004T13A013doi:https://doi.org/10.1115/97-GT-323

Topics: Boron , Ceramics , Aluminum , Compression , Engines , Gas turbines , Heat , High temperature , Shrinkage (Materials) , Vacuum

Oxidation Induced Stress-Rupture of Fiber Bundles

Edgar Lara-Curzio

GT 1997; V004T13A014doi:https://doi.org/10.1115/97-GT-332

Topics: Fibers , Oxidation , Rupture , Stress , Failure , Gages , Temperature effects

Oxidation Behavior of Ceramics for Gas Turbines in Combustion Gas Flow at 1500°C

Y. Etori, T. Hisamatsu, I. Yuri, Y. Yasutomi, T. Machida, K. Wada

GT 1997; V004T13A015doi:https://doi.org/10.1115/97-GT-355

Topics: Ceramics , Combustion gases , Flow (Dynamics) , Gas turbines , Oxidation , Gas flow , Weight (Mass) , Sintering , Silicon , Corrosion

Program of Development of Metal-Ceramic Stationary Gas-Turbine 2.5 MW Unit and the Initial Results of Its Implementation

A. V. Soudarev, V. V. Grishaev, B. V. Soudarev, V. J. Podgorets, A. S. Molchanov, A. A. Sourjaninov

GT 1997; V004T13A016doi:https://doi.org/10.1115/97-GT-356

Topics: Ceramics , Gas turbines , Metals , Energy engineering , Nickel titanium alloys

Analysis of the Temperature Profile of Ceramic Composite Materials Exposed to Combined Conduction-Radiation Between Concentric Cylinders

Andrés Tremante, Freddy Malpica

GT 1997; V004T13A017doi:https://doi.org/10.1115/97-GT-390

Topics: Ceramic composites , Cylinders , Heat conduction , Radiation (Physics) , Temperature profiles , Ceramics , Composite materials , Compressors , Control systems , Differential equations

Development of Ultra High Temperature Ceramic Composites for Gas Turbine Combustors

Magnus Holmquist, Robert Lundberg, Tony Razzell, Olivier Sudre, Ludovic Molliex, Jan Adlerborn

GT 1997; V004T13A018doi:https://doi.org/10.1115/97-GT-413

Topics: Ceramic composites , Combustion chambers , Gas turbines , High temperature , Composite materials , Fibers , Combustion , Crystal whiskers , Crystals , Engineering prototypes

Computer-Aided Manufacturing of Laminated Engineering Materials (CAM-LEM) and its Application to the Fabrication of Ceramic Components Without Tooling

James D. Cawley

GT 1997; V004T13A019doi:https://doi.org/10.1115/97-GT-534

Topics: Computer-aided manufacturing , Industrial ceramics , Manufacturing , Tooling , Ceramics , Design , Gas turbines , Composite materials , Engineering prototypes , Rapid prototyping

Structures and Dynamics

A Comparison of Experimental Rotordynamic Coefficients and Leakage Characteristics Between Hole-Pattern Gas Damper Seals and a Honeycomb Seal

Zeping Yu, Dara W. Childs

GT 1997; V004T14A001doi:https://doi.org/10.1115/97-GT-009

Topics: Dampers , Honeycomb structures , Leakage , Damage , Damping , Design , Drilling , Manufacturing , Plastics , Pressure

Prevention of Low-Frequency Vibration of High-Capacity Steam Turbine Units by Squeeze-Film Damper

H. Kanki, Y. Kaneko, M. Kurosawa, T. Yamamoto

GT 1997; V004T14A002doi:https://doi.org/10.1115/97-GT-011

Topics: Dampers , Steam turbines , Vibration , Damping , Rotors , Turbines , High pressure (Physics) , Countermeasures , Design , Machinery

Imbalance Response of a Test Rotor Supported on Squeeze Film Dampers

Luis San Andrés, Daniel Lubell

GT 1997; V004T14A003doi:https://doi.org/10.1115/97-GT-012

Topics: Dampers , Rotors , Damping , Vibration , Aircraft , Bearings , Cavitation , Databases , Disks , Engineering design processes

Rotordynamic Modeling of an Actively Controlled Magnetic Bearing Gas Turbine Engine

B. M. Antkowiak, F. C. Nelson

GT 1997; V004T14A004doi:https://doi.org/10.1115/97-GT-013

Topics: Gas turbines , Magnetic bearings , Modeling , Rotors , Dynamic models , Dynamics (Mechanics) , Finite element analysis , Sensors , Simulation , Transfer functions

Flux Density and Air Gap Effects on Rotor Power Loss Measurements in Planar Radial Magnetic Bearings

P. E. Allaire, M. E. F. Kasarda, E. H. Maslen, G. T. Gillies, L. K. Fujita

GT 1997; V004T14A005doi:https://doi.org/10.1115/97-GT-017

Topics: Density , Magnetic bearings , Rotors , Eddies (Fluid dynamics) , Eddy currents (Electricity) , Magnetic induction , Drag (Fluid dynamics) , Heat , Kinetic energy

Calibration of an 8-Pole Planar Radial Magnetic Actuator

Roger L. Fittro, Dan O. Baun, Eric H. Maslen, Paul E. Allaire

GT 1997; V004T14A006doi:https://doi.org/10.1115/97-GT-018

Topics: Actuators , Calibration , Poles (Building) , Currents , Frequency response , Force measurement , Uncertainty , Bearings , Circuits , Clearances (Engineering)

Characterization of Contact Kinematics and Application to the Design of Wedge Dampers in Turbomachinery Blading: Part I — Stick-Slip Contact Kinematics

B. D. Yang, C. H. Menq

GT 1997; V004T14A007doi:https://doi.org/10.1115/97-GT-019

Topics: Dampers , Design , Kinematics , Stick-slip , Turbomachinery , Wedges , Blades , Friction , Damping , Stiffness

Characterization of Contact Kinematics and Application to the Design of Wedge Dampers in Turbomachinery Blading: Part II — Prediction of Forced Response and Experimental Verification

B. D. Yang, C. H. Menq

GT 1997; V004T14A008doi:https://doi.org/10.1115/97-GT-020

Topics: Dampers , Design , Kinematics , Turbomachinery , Wedges , Friction , Blades , Damping , Stiffness , Algebra

Computation of Multi-Passage Cascade Flows With Overset and Deforming Grids

Ismail H. Tuncer, Wolfgang Sanz

GT 1997; V004T14A009doi:https://doi.org/10.1115/97-GT-021

Topics: Cascades (Fluid dynamics) , Computation , Flow (Dynamics) , Algorithms , Blades , Compressors

A Probabilistic Approach to Aircraft Turbine Rotor Material Design

Gerald R. Leverant, David L. Littlefield, R. Craig McClung, Harry R. Millwater, Justin Y. Wu

GT 1997; V004T14A010doi:https://doi.org/10.1115/97-GT-022

Topics: Aircraft , Design , Rotors , Turbines , Disks , Titanium alloys , Alloys , Computer software , Fatigue cracks , Fracture (Materials)

An Introduction to Harmonic Wavelet Analysis of Machine Vibrations

Jose I. Bonel-Cerdan, Jorgen L. Nikolajsen

GT 1997; V004T14A011doi:https://doi.org/10.1115/97-GT-058

Topics: Machinery , Vibration , Wavelets , Condition monitoring , Signals , Computation , Corrective actions , Emission spectroscopy , Failure , Fast Fourier transforms

Effective Automatic Expert Systems for Dynamic Predictive Maintenance Applications

Michael A. Flanagan, Carsten Andersson, Peter Surland

GT 1997; V004T14A012doi:https://doi.org/10.1115/97-GT-064

Topics: Expert systems , Maintenance , Machinery , Artificial neural networks , Computer simulation , Computers , Decision making , Emission spectroscopy , Monitoring systems , Spectroscopy

Non Linear Behaviour of Oil Film Bearings and its Relevance in Force Identification Procedures

Nicolò Bachschmid, Riccardo Dellupi

GT 1997; V004T14A013doi:https://doi.org/10.1115/97-GT-070

Topics: Bearings , Rotors , Computer simulation , Errors , Steady state , Vibration

Rotor Design in Industrial Gas Turbines

Stefan S. Florjancic, Jörg Pross, Urban Eschbach

GT 1997; V004T14A014doi:https://doi.org/10.1115/97-GT-075

Topics: Design , Industrial gases , Rotors , Turbines , Transients (Dynamics) , Bearings , Blades , Circuits , Cooling , Disks

Nonlinear Separated Inviscid–Viscous Analysis of Oscillating Cascade Aerodynamics Using an Inverse Integral Method

James M. Wolff, Sanford Fleeter

GT 1997; V004T14A015doi:https://doi.org/10.1115/97-GT-085

Topics: Aerodynamics , Cascades (Fluid dynamics) , Airfoils , Boundary-value problems , Unsteady flow , Boundary layer turbulence , Boundary layers , Composite materials , Flat plates , Flow (Dynamics)

Reduction of Unsteady Blade Loading by Beneficial Use of Vortical and Potential Disturbances in an Axial Compressor With Rotor Clocking

S. T. Hsu, Andrew M. Wo

GT 1997; V004T14A016doi:https://doi.org/10.1115/97-GT-086

Topics: Blades , Compressors , Rotors , Stators , Chords (Trusses) , Delays , Flow (Dynamics) , Suction , Wakes

A Fast Method for the Prediction of Dynamic Stall Onset on Turbomachinery Blades

K. D. Jones, M. F. Platzer

GT 1997; V004T14A017doi:https://doi.org/10.1115/97-GT-101

Topics: Airfoils , Blades , Boundary layers , Delays , Navier-Stokes equations , Pressure , Turbomachinery , Turbulence

A Numerical Approach to Unstalled and Stalled Flutter Phenomena in Turbomachinery Cascades

Stefan Weber, Hannes Benetschik, Dieter Peitsch, Heinz E. Gallus

GT 1997; V004T14A018doi:https://doi.org/10.1115/97-GT-102

Topics: Flutter (Aerodynamics) , Turbomachinery , Blades , Compressors , Turbulence , Algebra , Algorithms , Cascades (Fluid dynamics) , Damping , Design

Casing Distortion Control Using Pseudo Flanges

John A. Eastman

GT 1997; V004T14A019doi:https://doi.org/10.1115/97-GT-103

Topics: Blades , Finite element analysis , Flanges , Gas turbines , Hardware , Industrial gases , Solid modeling , Stators , Turbines

Touchdown Bearing Development for a Magnetic Bearing System Used in a High Temperature Gas Turbine

Francis P. Marchand, Jr.

GT 1997; V004T14A020doi:https://doi.org/10.1115/97-GT-104

Topics: Bearings , Gas turbines , High temperature , Magnetic bearings , Design , Stress , Silicon nitride ceramics , System failures

Three Dimensional Unsteady Pressure Measurements for an Oscillating Turbine Blade

D. L. Bell, L. He

GT 1997; V004T14A021doi:https://doi.org/10.1115/97-GT-105

Topics: Pressure measurement , Turbine blades , Blades , Test facilities , Ducts , Oscillations , Pressure , Pressure transducers , Probes , Unsteady flow

Finite Element Analysis of Thermomechanical Contact of an Elastomeric O-Ring Seal

Baojiu Lin, David W. Nicholson

GT 1997; V004T14A022doi:https://doi.org/10.1115/97-GT-106

Topics: Finite element analysis , Seals , Thermomechanics , Constitutive equations , Elastomers , Pressure , Aircraft engines , Compression , Computation , Deformation

A Probabilistic Approach to Life Management for Auxiliary Power Units

Don Eastman, Rick Elgin, Beilene Hao

GT 1997; V004T14A023doi:https://doi.org/10.1115/97-GT-107

Topics: Aerospace industry , Cracking (Materials) , Databases , Design , Failure , Fatigue , Fatigue failure , Fatigue life , Fracture (Process) , Gas turbines

Quantification of Thermal-Structural Uncertainties in Engine Combustor Composite Liners

Shantaram S. Pai, Christos C. Chamis

GT 1997; V004T14A024doi:https://doi.org/10.1115/97-GT-108

Topics: Combustion chambers , Composite materials , Engines , Uncertainty , Stress , Electromagnetic scattering , Shear modulus , Structural elements (Construction) , Temperature gradient , Thermal expansion

The Design of Fabricated Ducts to Avoid Gas Induced High Cycle Fatigue

R. Eaton, J. Platt, S. Gallimore

GT 1997; V004T14A025doi:https://doi.org/10.1115/97-GT-109

Topics: Design , Ducts , High cycle fatigue , Turbines , Failure , Testing , Engines , Fatigue life , Finite element analysis , Flow (Dynamics)

Evaluation of Gas Turbine Reliability Effects Using the Sustainable Capacity Methodology

W. S. Chmilar

GT 1997; V004T14A026doi:https://doi.org/10.1115/97-GT-110

Topics: Gas turbines , Reliability , Sustainability , Design , Stress , Compressors , Cost benefit analysis , Electricity (Physics) , Maintenance , Pipeline systems

Friction Damper Effects on Airfoil Aeromechanics

Patrick D. Markham, Sanford Fleeter

GT 1997; V004T14A027doi:https://doi.org/10.1115/97-GT-111

Topics: Airfoils , Dampers , Friction , Stability , Design , Blades , Damping , Engines , Linear systems , Optimization

Zero Clearance Auxiliary Bearings for Magnetic Bearing Systems

H. Ming Chen, James Walton, Hooshang Heshmat

GT 1997; V004T14A028doi:https://doi.org/10.1115/97-GT-112

Topics: Bearings , Clearances (Engineering) , Magnetic bearings , Failure , Shock (Mechanics) , Transients (Dynamics) , Rollers , Rotors , Engineering prototypes , Analytical design

Nonlinear Dynamic Simulation of an Active Magnetic Bearing System With Non-Symmetric Coordinate Coupling Forces

Horst Ecker, Josiah D. Knight, Lan Wu

GT 1997; V004T14A029doi:https://doi.org/10.1115/97-GT-113

Topics: Magnetic bearings , Simulation , Equations of motion , Impulse (Physics) , Magnets , Rotors , Stress , Degrees of freedom

A Magnetic Bearing Suspension System for High Temperature Gas Turbine Applications: Part III — Magnetic Actuator Development

William P. Kelleher, Anthony S. Kondoleon

GT 1997; V004T14A030doi:https://doi.org/10.1115/97-GT-114

Topics: Actuators , Gas turbines , High temperature , Magnetic bearings , Suspension systems , Bearings , Design , Ceramics , Copper , Manufacturing

Optimization of Friction Damper Weight, Simulation and Experiments

Gabor Csaba, Magnus Andersson

GT 1997; V004T14A031doi:https://doi.org/10.1115/97-GT-115

Topics: Dampers , Friction , Optimization , Simulation , Weight (Mass) , Design , Blades , Particle spin , Rotation , Spin (Aerodynamics)

The Maximum Transient Resonance Response of Rotating Blades With Regard to Centrifugal Force and Non-Linear Damping Effects

Horst D. Irretier

GT 1997; V004T14A032doi:https://doi.org/10.1115/97-GT-116

Topics: Centrifugal force , Damping , Resonance , Rotating blades , Transients (Dynamics) , Blades , Fluid dynamics , Friction , High cycle fatigue , Machinery

A Coupled Mode Analysis of Unsteady Multistage Flows in Turbomachinery

Peter D. Silkowski, Kenneth C. Hall

GT 1997; V004T14A033doi:https://doi.org/10.1115/97-GT-186

Topics: Flow (Dynamics) , Turbomachinery , Blades , Reflection , Spin (Aerodynamics) , Spinning (Textile) , Airfoils , Boundary-value problems , Cascades (Fluid dynamics) , Computational methods

Dynamic Behavior of Geared Rotors

T. N. Shiau, J. S. Rao, J. R. Chang, Siu-Tong Choi

GT 1997; V004T14A034doi:https://doi.org/10.1115/97-GT-187

Topics: Rotors , Dampers , Excitation , Vibration , Chaos , Gravity (Force) , Torsion , Whirls

Improved Reliability of Bladed Disks due to Friction Dampers

Walter Sextro, Karl Popp, Ivo Wolter

GT 1997; V004T14A035doi:https://doi.org/10.1115/97-GT-189

Topics: Dampers , Disks , Friction , Reliability , Blades , Centrifugal force , Damping , Dry friction , Geometry , Manufacturing

Non-Contact Vibration Measurements of Mistuned Coupled Blades

Ulrich Schaber

GT 1997; V004T14A036doi:https://doi.org/10.1115/97-GT-190

Topics: Blades , Vibration measurement , Vibration , Errors , Gas turbines , Measurement systems , Probes , Resonance , Strain gages , Turbomachinery

An Influence of Shroud Design on the Dynamic and Aeroelastic Behavior of Bladed Disc Assemblies

G. Jacquet-Richardet, F. Moyroud, T. H. Fransson

GT 1997; V004T14A037doi:https://doi.org/10.1115/97-GT-191

Topics: Design , Disks , Symmetry (Physics) , Damping , Manufacturing , Mode shapes , Modeling

Stability Analysis for Unsymmetrical Shaft With Flexible Bladed-Disk

Samer Masoud, Naim Khader

GT 1997; V004T14A038doi:https://doi.org/10.1115/97-GT-201

Topics: Disks , Stability , Springs , Stiffness , Bearings , Blades , Cantilevers , Dynamics (Mechanics) , Equations of motion , Inertia (Mechanics)

Computation of Unsteady Flows Around Oscillating Blades Using Linear and Nonlinear Harmonic Euler Methods

Wei Ning, Li He

GT 1997; V004T14A039doi:https://doi.org/10.1115/97-GT-229

Topics: Blades , Computation , Unsteady flow , Flow (Dynamics) , Perturbation theory , Stress

Shock Analysis for a Homopolar, Permanent Magnet Bias Magnetic Bearing System

Lawrence A. Hawkins

GT 1997; V004T14A040doi:https://doi.org/10.1115/97-GT-230

Topics: Magnetic bearings , Permanent magnets , Shock (Mechanics) , Bearings , Clearances (Engineering) , Control systems , Design , Gas turbines , Machine testing , Machinery

A Study of Integrally Augmented State Feedback Control for an Active Magnetic Bearing Supported Rotor System

George T. Flowers, Gyorgy Szasz, Victor S. Trent, Michael E. Greene

GT 1997; V004T14A041doi:https://doi.org/10.1115/97-GT-231

Topics: Magnetic bearings , Rotors , State feedback , Control equipment , Feedback , Pole placement

Rotordynamic Impact of Swirl Brakes on Labyrinth Seals With Smooth or Honeycomb Stators

K. Kwanka

GT 1997; V004T14A042doi:https://doi.org/10.1115/97-GT-232

Topics: Brakes , Excitation , Flow (Dynamics) , Honeycomb structures , Power density , Rotors , Stability , Stators , Turbomachinery , Vibration

Investigation of the Solidity and the Blade Vibration Behaviour of Unshrouded Centrifugal Compressor Impellers With Different Aerodynamic Design

H. Hasemann, G. Weser, D. Hagelstein, M. Rautenberg

GT 1997; V004T14A043doi:https://doi.org/10.1115/97-GT-233

Topics: Blades , Compressor impellers , Design , Vibration , Computation , Finite element analysis , Geometry , Impellers , Optimization , Compressors

Reducing Lateral Vibrations of a Rotor Passing Through Critical Speeds by Acceleration Scheduling

Knox T. Millsaps, Gregory L. Reed

GT 1997; V004T14A044doi:https://doi.org/10.1115/97-GT-234

Topics: Rotors , Vibration , Disks , Lumped parameter models

A Numerical Study of Flutter in a Transonic Fan

Kousuke Isomura, Michael B. Giles

GT 1997; V004T14A045doi:https://doi.org/10.1115/97-GT-235

Topics: Flutter (Aerodynamics) , Shock (Mechanics) , Blades , Computational fluid dynamics , Chords (Trusses) , Excitation , Fans , Flow (Dynamics) , Mach number , Oscillations

Crack Initiation in a Coated and an Uncoated Nickel-Base Superalloy Under TMF Conditions

Peter K. Johnson, María Arana, Koldo M. Ostolaza, Johan Bressers

GT 1997; V004T14A046doi:https://doi.org/10.1115/97-GT-236

Topics: Aircraft engines , Blades , Cycles , Damage , Density , Failure , Fatigue , Fracture (Materials) , Metallography , Nickel

A Plastic Fracture Mechanics Analysis of Small Case B Fatigue Cracks Under Multiaxial Loading Conditions

Y. Wang, J. Pan

GT 1997; V004T14A047doi:https://doi.org/10.1115/97-GT-237

Topics: Fatigue cracks , Fracture mechanics , Fracture (Materials) , Finite element analysis , Deformation , Fatigue life , Hardening , Plane strain

Theory and Methodology of Optimally Measuring Vibratory Strains in Closely Spaced Modes

M.-T. Yang, J. H. Griffin

GT 1997; V004T14A048doi:https://doi.org/10.1115/97-GT-238

Topics: Blades , Errors , Gages , Mechanical properties , Mode shapes , Optimization , Strain measurement , Stress

The Effects of Fatigue Cracks on Free Torsional Vibration of Shafts

H.-Y. Yen, M.-H. Herman Shen

GT 1997; V004T14A049doi:https://doi.org/10.1115/97-GT-249

Topics: Fatigue cracks , Vibration , Fracture (Materials) , Displacement , Boundary-value problems , Equations of motion , Free vibrations , Stress , Variational principles

Prediction of Turbine Blade Vibratory Response due to Upstream Vane Distress

Josef Panovsky, Scott M. Carson

GT 1997; V004T14A050doi:https://doi.org/10.1115/97-GT-250

Topics: Turbine blades , Blades , Computational fluid dynamics , Engines , Excitation , Flow (Dynamics) , Crack propagation , Fracture (Materials) , High pressure (Physics) , Stress

Time Dependent Crack Initiation and Growth in Ceramic Matrix Composites

Matthew R. Begley, Brian N. Cox, Robert M. McMeeking

GT 1997; V004T14A051doi:https://doi.org/10.1115/97-GT-275

Topics: Ceramic matrix composites , Fracture (Materials) , Fibers , Cracking (Materials) , Fracture (Process) , Approximation , Creep , High temperature , Relaxation (Physics) , Stress

Vibration Analysis of Rotating Cambered Helicoidal Turbomachine Blades

J. S. Rao, C. V. Ramakrishnan, K. Gupta, K. K. Rao

GT 1997; V004T14A052doi:https://doi.org/10.1115/97-GT-299

Topics: Blades , Turbomachinery , Vibration analysis , Shells , Displacement , Finite element analysis , Stress

The Analysis and Resolution of a Fatigue Failure of a Low Pressure Turbine Blade Caused by the Excitation of a Bladed Disc Mode of Vibration

Malcolm C. Staddon, Paul R. Box, Barry Barnett, Tony Horton, Geoff H. Ballans

GT 1997; V004T14A053doi:https://doi.org/10.1115/97-GT-359

Topics: Disks , Excitation , Fatigue failure , Pressure , Resolution (Optics) , Turbine blades , Vibration , Blades , Strain gages , Design

Analysis of Interfacial Cracks in a TBC/Superalloy System Under Thermo-Mechanical Loading

S. Q. Nusier, G. M. Newaz

GT 1997; V004T14A054doi:https://doi.org/10.1115/97-GT-391

Topics: Fracture (Materials) , Superalloys , Thermomechanics , Temperature , Deflection , Delamination , Pressure , Residual stresses , Boundary-value problems , Ceramics

Transient Thermoelastohydrodynamic Study of Tilting-Pad Journal Bearings Under Dynamic Loading

Pascal Monmousseau, Michel Fillon, Jean Frêne

GT 1997; V004T14A055doi:https://doi.org/10.1115/97-GT-400

Topics: Dynamic testing (Materials) , Journal bearings , Transients (Dynamics) , Steady state , Bearings , Stress , Blades , Boundary-value problems , Deformation , Film thickness

Direct Prediction of the Effects of Mistuning on the Forced Response of Bladed Disks

Marc P. Mignolet, Wei Hu

GT 1997; V004T14A056doi:https://doi.org/10.1115/97-GT-404

Topics: Disks , Blades , Approximation , Errors , Modeling , Resonance , Simulation results , Steady state , Vibration

Ceramic Coating Edge Failure due to Thermal Expansion Interference

Herman A. Nied

GT 1997; V004T14A057doi:https://doi.org/10.1115/97-GT-410

Topics: Ceramic coatings , Failure , Thermal expansion , Stress , Ceramics , Finite element analysis , Manufacturing , Metallic composites , Metals , Spallation (Nuclear physics)

Physics of Airfoil Clocking in Axial Compressors

Karen L. Gundy-Burlet, Daniel J. Dorney

GT 1997; V004T14A058doi:https://doi.org/10.1115/97-GT-444

Topics: Airfoils , Compressors , Physics , Wakes , Rotors , Stators , Aerodynamics , Blades , Turbomachinery , Unsteady flow

A Metal Matrix Composite Damage and Life Prediction Model

Jalees Ahmad, Unnikrishnan Santhosh, Sandra Hoff

GT 1997; V004T14A059doi:https://doi.org/10.1115/97-GT-445

Topics: Damage , Metal matrix composites , Fibers , Composite materials , Fracture (Materials) , Fracture (Process) , Constitutive equations , Deformation , Failure , Finite element analysis

Life Assessment of Gas Turbine Blades and Vanes

John K. Hepworth, John D. Wilson, James M. Allen, George H. Quentin, George Touchton

GT 1997; V004T14A060doi:https://doi.org/10.1115/97-GT-446

Topics: Blades , Gas turbines , Damage , Creep , Engines , Fracture (Materials) , Stress , Temperature distribution , Boundary-value problems , Combined cycles

Identification of the Modal Parameters of a Flexibly Supported Casing

N. S. Feng, Eric J. Hahn

GT 1997; V004T14A061doi:https://doi.org/10.1115/97-GT-447

Topics: Accuracy and precision , Gas turbines , Inertia (Mechanics) , Rotors , Vibration

Proposed Forcing Mechanisms and Non-Linear Effects on Subsynchronous Vibrations in High Performance Turbomachinery

M. F. White, S. H. Chan

GT 1997; V004T14A062doi:https://doi.org/10.1115/97-GT-448

Topics: Turbomachinery , Vibration , Damping , Bearings , Rotors , Blades , Excitation , Flow (Dynamics) , Fluid-dynamic forces , Linear systems

Experimental Determination of Rotor Foundation Parameters for Improved Critical Speed Predictions

Jiankang Xu, John M. Vance

GT 1997; V004T14A063doi:https://doi.org/10.1115/97-GT-449

Topics: Rotors , Bearings , Mechanical admittance , Computers , Concretes , Damping , Finite element model , Modeling , Steel , Transfer functions

Bird Strike Investigations in the Development Process of a Transonic Fan Blisk

Jörg D. Frischbier

GT 1997; V004T14A064doi:https://doi.org/10.1115/97-GT-482

Topics: Aircraft , Analytical methods , Blades , Cantilevers , Cross section (Physics) , Experimental design , Failure , Geometry , Modeling , Rotors

Rotordynamic Instability From an Anti-Swirl Device

John Vance, Steven B. Handy

GT 1997; V004T14A065doi:https://doi.org/10.1115/97-GT-498

Topics: Brakes , Dampers , Damping , Design , Flow (Dynamics) , Guide vanes , High temperature , Rotors , Turbomachinery , Whirls

Resonance Vibration of Mistuned Bladed Discs in Stationary Operations

Romuald Rządkowski

GT 1997; V004T14A066doi:https://doi.org/10.1115/97-GT-499

Topics: Disks , Resonance , Vibration , Excitation , Airfoils , Blades , Compressible flow , Computer simulation , Geometry , Stress

A Bernoulli-Euler Stiffness Matrix Approach for Vibrational Analysis of Spinning Linearly Tapered Beams

S. M. Hashemi, M. J. Richard, G. Dhatt

GT 1997; V004T14A067doi:https://doi.org/10.1115/97-GT-500

Topics: Spin (Aerodynamics) , Spinning (Textile) , Stiffness , Finite element analysis , Finite element methods , Shapes

An Experimental Investigation of Vibration Localization in Bladed Disks: Part I — Free Response

Marlin J. Kruse, Christophe Pierre

GT 1997; V004T14A068doi:https://doi.org/10.1115/97-GT-501

Topics: Disks , Vibration , Blades , Density , Dynamic response , Finite element analysis , Mode shapes , Modeling

An Experimental Investigation of Vibration Localization in Bladed Disks: Part II — Forced Response

Marlin J. Kruse, Christophe Pierre

GT 1997; V004T14A069doi:https://doi.org/10.1115/97-GT-502

Topics: Disks , Vibration , Blades , Excitation , Dynamic response , Engines , Mode shapes , Piezoelectric actuators , Traveling waves

Radial Planar Magnetic Bearing Analysis With Finite Elements Including Rotor Motion and Power Losses

R. D. Rockwell, Jr., P. E. Allaire, M. E. F. Kasarda

GT 1997; V004T14A070doi:https://doi.org/10.1115/97-GT-503

Topics: Finite element analysis , Magnetic bearings , Rotors , Magnetic induction , Eddies (Fluid dynamics) , Eddy currents (Electricity) , Electric fields , Electrical conductivity , Finite element model , Magnetic materials

Controls, Diagnostics and Instrumentation

Thickness Measurement of MCrAlY High-Temperature Coatings by Frequency Scanning Eddy Current Technique

Giampiero Antonelli, Marco Ruzzier, Fiorenzo Necci

GT 1997; V004T15A001doi:https://doi.org/10.1115/97-GT-001

Topics: Coatings , Eddies (Fluid dynamics) , Eddy currents (Electricity) , High temperature , Thickness measurement , Quality control , Base metals , Blades , Chemical properties , Electromagnetic fields

A High Temperature Assessment of Air-Cooled Unsteady Pressure Transducers

Derek G. Ferguson, Paul C. Ivey

GT 1997; V004T15A002doi:https://doi.org/10.1115/97-GT-006

Topics: High temperature , Pressure transducers , Cooling , Transducers , Water , Control systems , Finite element analysis , Flow (Dynamics) , Heat transfer , Pressure

Loading Software to Engine Controls in the Field

Scott F. Beecher, Bret G. Lynch

GT 1997; V004T15A003doi:https://doi.org/10.1115/97-GT-016

Topics: Computer software , Engines , Computers , Wings , Cables , Laptop computers , Public utilities , Aircraft , Control systems , Flight

ARX Linear Model Set-Up for Fault Diagnosis of Gas Turbine Sensors

R. Bettocchi, P. R. Spina

GT 1997; V004T15A004doi:https://doi.org/10.1115/97-GT-027

Topics: Fault diagnosis , Gas turbines , Sensors , Modeling , Machinery , Physical laws , Reliability , Time series

Generic 1D Dynamic Modeling of a Gas Generator Engine

A. Solomon

GT 1997; V004T15A005doi:https://doi.org/10.1115/97-GT-028

Topics: Dynamic modeling , Engines , Generators , Surges , Dynamic models , Optimization , Compressors , Design , Geometry , Physics

A Magnetic Bearing Suspension System for High Temperature Gas Turbine Applications: Control System Design

James R. Scholten

GT 1997; V004T15A006doi:https://doi.org/10.1115/97-GT-029

Topics: Control systems , Design , Gas turbines , High temperature , Magnetic bearings , Suspension systems , Actuators , Simulation , Bearings , Rotors

Real-Time Health Monitoring and Diagnostics for Gas Turbine Engines

Michael J. Roemer, Ben Atkinson

GT 1997; V004T15A007doi:https://doi.org/10.1115/97-GT-030

Topics: Engines , Finite element analysis , Gas turbines , Maintenance , Pattern recognition , Vibration

Identification of Gas Turbine Dynamics: Time-Domain Estimation Problems

David C. Hill

GT 1997; V004T15A008doi:https://doi.org/10.1115/97-GT-031

Topics: Dynamics (Mechanics) , Gas turbines , Errors , Poles (Building) , Engines , Flow (Dynamics) , Fuels , Transfer functions

Experimental Results of an Active Tip Clearance Control System for a Centrifugal Compressor

Duane Mattern, Link Jaw, Mark Henry, Bob Fagan

GT 1997; V004T15A009doi:https://doi.org/10.1115/97-GT-032

Topics: Clearances (Engineering) , Compressors , Control systems , Actuators , Blades , Capacitance , Compressor impellers , Design , Displacement , Electric current

Fault Mode Analysis Based on Compositional Modeling

Howard Winston, Sharayu Tulpule

GT 1997; V004T15A010doi:https://doi.org/10.1115/97-GT-034

Topics: Modeling , Simulation , Failure , Failure mechanisms , Gas turbines , Design methodology

Incorporating Neural Networks Into Gas Turbine Performance Diagnostics

K. Kanelopoulos, A. Stamatis, K. Mathioudakis

GT 1997; V004T15A011doi:https://doi.org/10.1115/97-GT-035

Topics: Artificial neural networks , Gas turbines , Architecture , Engines , Flaw detection , Modeling , Sensors

Blade Fault Recognition Based on Signal Processing and Adaptive Fluid Dynamic Modelling

A. Stamatis, N. Aretakis, K. Mathioudakis

GT 1997; V004T15A012doi:https://doi.org/10.1115/97-GT-197

Topics: Blades , Dynamic modeling , Fluids , Signal processing , Flow (Dynamics) , Signals , Cascades (Fluid dynamics) , Deformation , Design methodology , Dynamic models

High Temperature Proximity Measurement in Aero and Industrial Turbomachinery

A. G. Sheard, S. G. O’Donnell, J. F. Stringfellow

GT 1997; V004T15A013doi:https://doi.org/10.1115/97-GT-198

Topics: Distance measurement , High temperature , Turbomachinery , Turbines , Disks , Clearances (Engineering) , Combustion chambers , Critical points (Physics) , Displacement , Engines

Measurements of Aerodynamic Wall Shear Stress With Heated Thin Film Gauges

M. R. D. Davies, J. E. Fitzgerald, J. T. Duffy, F. K. O’Donnell

GT 1997; V004T15A014doi:https://doi.org/10.1115/97-GT-211

Topics: Gages , Shear stress , Thin films , Calibration , Pipe flow , Pressure gradient , Air flow , Aluminum , Blades , Cascades (Fluid dynamics)

Metallurgical Analysis of Temperature Monitored Gas Turbine Blades

Rudy A. Rooth, Klaas S. Agema, Wiebren Hiemstra

GT 1997; V004T15A015doi:https://doi.org/10.1115/97-GT-212

Topics: Blades , Gas turbines , Metallurgical analysis , Temperature , Radiation (Physics) , Temperature measurement , Creep , Optical quality control , Resolution (Optics) , Service life (Equipment)

A Review of Analysis Techniques for Blade Tip-Timing Measurements

S. Heath, M. Imregun

GT 1997; V004T15A016doi:https://doi.org/10.1115/97-GT-213

Topics: Blades , Rotors , Vibration , Manufacturing , Probes , Disks , Engineering standards , Lasers , Steam turbines , Strain gages

Model Based Fuzzy Logic Sensor Fault Accommodation

Timothy A. Healy, Laura J. Kerr, Louis J. Larkin

GT 1997; V004T15A017doi:https://doi.org/10.1115/97-GT-222

Topics: Fuzzy logic , Sensors , Aircraft , Control systems , Engines , Gas turbines , Simulation

Real Time Thermodynamic Transient Model for Three Spool Turboprop Engine

C. Crainic, R. Harvey, A. Thompson

GT 1997; V004T15A018doi:https://doi.org/10.1115/97-GT-223

Topics: Engines , Transients (Dynamics) , Computers , Dynamics (Mechanics) , Thermodynamics , Transient heat transfer

Developing Centrifugal Compressor Train Optimization Models for Performance Evaluation

Steven M. Summers

GT 1997; V004T15A019doi:https://doi.org/10.1115/97-GT-241

Topics: Compressors , Optimization , Performance evaluation , Trains , Computer software , Flow (Dynamics) , Machinery , Pressure , Equations of state , Temperature

Active Stabilization of Axial Compressors With Circumferential Inlet Distortion

C. M. van Schalkwyk, J. D. Paduano, E. M. Greitzer, A. H. Epstein

GT 1997; V004T15A020doi:https://doi.org/10.1115/97-GT-279

Topics: Compressors , Flow (Dynamics) , Transfer functions , Design , Feedback , Geometry , Modeling , Steady state

Experiments in Active Control of Stall on an Aeroengine Gas Turbine

Christopher Freeman, Alexander G. Wilson, Ivor J. Day, Malcolm A. Swinbanks

GT 1997; V004T15A021doi:https://doi.org/10.1115/97-GT-280

Topics: Combustion chambers , Compressors , Control systems , Data acquisition , Engines , Fuels , Gas turbines , Pressure , Pressure transducers , Transients (Dynamics)

Stall Inception and the Prospects for Active Control in Four High Speed Compressors

I. J. Day, T. Breuer, J. Escuret, M. Cherrett, A. Wilson

GT 1997; V004T15A022doi:https://doi.org/10.1115/97-GT-281

Topics: Compressors , Stall inception , Control systems , Aircraft engines , Design , Signals

A Fast-Response High Spatial Resolution Total Temperature Probe Using a Pulsed Heating Technique

D. R. Buttsworth, T. V. Jones

GT 1997; V004T15A023doi:https://doi.org/10.1115/97-GT-301

Topics: Heating , Probes , Resolution (Optics) , Temperature , Gages , Thin films , Convection , Transients (Dynamics) , Cylinders , Flow (Dynamics)

Contaminants in a Gas Turbine Fuel System and Thermal Shock

Timothy D. Newbound, Richard. S. Norek

GT 1997; V004T15A024doi:https://doi.org/10.1115/97-GT-307

Topics: Fuel systems , Gas turbines , Thermal shock , Filters , Gaseous fuels , Damage , Fracture (Materials) , Particulate matter , Turbines , Coating processes

Development of a Programmable Logic Controller Based Fuel Control System for the G.E. LM-1600 Gas Turbine

Dan A. King, Jim Patrick

GT 1997; V004T15A025doi:https://doi.org/10.1115/97-GT-314

Topics: Control systems , Fuels , Gas turbines , Programmable controllers , Compressors , Actuators , Design , Engines , Hardware , Model development

Instrumentation Systems for a Continuous Flow Turbine Rotor

Mark R. D. Davies, Catherine M. Byrne, Paul Dillon

GT 1997; V004T15A026doi:https://doi.org/10.1115/97-GT-315

Topics: Flow (Dynamics) , Instrumentation , Rotors , Turbines , Bridges (Structures) , Gages , Pressure , Blades , Boundary layers , Design

Characterizing the Effects of Air Injection on Compressor Performance for Use in Active Control of Rotating Stall

Robert L. Behnken, Mina Leung, Richard M. Murray

GT 1997; V004T15A027doi:https://doi.org/10.1115/97-GT-316

Topics: Compressors , Axial flow , Flow (Dynamics) , Rotors , Compression , Control equipment , Performance characterization

Integrated Control of Rotating Stall and Surge in High-Speed Multi-Stage Compression Systems

K. M. Eveker, D. L. Gysling, C. N. Nett, O. P. Sharma

GT 1997; V004T15A028doi:https://doi.org/10.1115/97-GT-352

Topics: Compression , Surges , Annulus , Compressors , Flow (Dynamics) , Axial flow , Control equipment , Robustness , Rotors , Valves

Modeling of Industrial Pumping System Dynamics

Ammar A. Al-Nahwl, Martin B. Graf

GT 1997; V004T15A029doi:https://doi.org/10.1115/97-GT-353

Topics: Modeling , System dynamics , Compressors , Turbines , Fluids , Inertia (Mechanics) , Control equipment , Dynamics (Mechanics) , Stability , Surges

Operating Experience of the First Solar^® Taurus 70S Mechanical Drive Installation

A. James Hoshizaki

GT 1997; V004T15A030doi:https://doi.org/10.1115/97-GT-354

Topics: Mechanical drives , Solar energy , Turbines , Compressors , Gas turbines , Emissions , Exhaust systems , Natural gas distribution , Testing , Testing performance

High-Temperature Surface Measurements of Turbine Engine Components Using Thermographic Phosphors

Sami Alaruri, Andy Brewington

GT 1997; V004T15A031doi:https://doi.org/10.1115/97-GT-368

Topics: Gas turbines , High temperature , Phosphors , Calibration , Combustion chambers , Gas flow , Lasers , Temperature

Direct Full Surface Skin Friction Measurement Using Nematic Liquid Crystal Techniques

D. R. Buttsworth, S. J. Elston, T. V. Jones

GT 1997; V004T15A032doi:https://doi.org/10.1115/97-GT-397

Topics: Liquid crystals , Skin friction (Fluid dynamics) , Equilibrium (Physics) , Calibration , Laminar flow , Molecular dynamics , Molecular rotation , Physics , Shear stress

Unsteady Total Temperature Measurements Downstream of a High Pressure Turbine

D. R. Buttsworth, T. V. Jones, K. S. Chana

GT 1997; V004T15A033doi:https://doi.org/10.1115/97-GT-407

Topics: High pressure (Physics) , Temperature measurement , Turbines , Temperature , Probes , Flow (Dynamics) , Heat transfer , Wind tunnels , Calibration , Compressible flow

Active Stabilization of Rotating Stall and Surge in a Transonic Single Stage Axial Compressor

H. J. Weigl, J. D. Paduano, L. G. Fréchette, A. H. Epstein, E. M. Greitzer, M. M. Bright, A. J. Strazisar

GT 1997; V004T15A034doi:https://doi.org/10.1115/97-GT-411

Topics: Compressors , Surges , Design , Rotors , Dynamics (Mechanics) , Feedback , Flow (Dynamics) , Mach number , Stall inception , Control equipment

One-Dimensional Predictive Emission Monitoring Model for Gas Turbine Combustors

K. K. Botros, M. J. de Boer, G. R. Price, G. Kibrya

GT 1997; V004T15A035doi:https://doi.org/10.1115/97-GT-414

Topics: Combustion chambers , Emissions , Gas turbines , Nitrogen oxides , Flames , Flow (Dynamics) , Annulus , Combustion , Computer software , Convection

Advances in Thin Film Sensor Technologies for Engine Applications

Jih-Fen Lei, Lisa C. Martin, Herbert A. Will

GT 1997; V004T15A036doi:https://doi.org/10.1115/97-GT-458

Topics: Engines , Thin film sensors , Ceramics , High temperature , NASA , Platinum , Sensors , Strain gages , Thermocouples , Advanced materials

Turbine Tip Clearance Measurement System Evaluation on an Industrial Gas Turbine

S. J. Gill, M. D. Ingallinera, A. G. Sheard

GT 1997; V004T15A037doi:https://doi.org/10.1115/97-GT-466

Topics: Clearances (Engineering) , Industrial gases , Measurement systems , Turbines , Gas turbines , Machinery , Turbine blades , Probes , Vehicles

Development of High Temperature Gas Sensor Technology

Gary W. Hunter, Liang-Yu Chen, Philip G. Neudeck, Dak Knight, C. C. Liu, Q. H. Wu, H. J. Zhou

GT 1997; V004T15A038doi:https://doi.org/10.1115/97-GT-494

Topics: High temperature , Sensors , Engines , Emissions , Air pollution control , Gases , Hydrogen , Manufacturing , Materials science , Micromachining

Turbine Testing With High-Line, Low Differential Pressure Measurement

Blair R. Chalpin

GT 1997; V004T15A039doi:https://doi.org/10.1115/97-GT-527

Topics: Airfoils , Calibration , Errors , Leakage , Machinery , Pressure , Pressure measurement , Pressure transducers , Testing , Transducers

Education

Creating Global Mechanical Engineers Through New Education-Industry Partnerships

John R. Lloyd, Ronald C. Rosenberg

GT 1997; V004T16A001doi:https://doi.org/10.1115/97-GT-046

Topics: Education , Mechanical engineers , Students , Mechanical engineering , Mechanical engineering education , Mentoring , Undergraduate students

AGTSR: A Unique Gas Turbine Consortium

Daniel B. Fant, Lawrence P. Golan

GT 1997; V004T16A002doi:https://doi.org/10.1115/97-GT-047

Topics: Gas turbines , Aerodynamics , Combustion , Cycles , Energy / power systems , Engineering students , Feedback , Fuels , Heat transfer , Internships

Some Applications of the Monte Carlo Method to Gas Turbine Performance Simulations

Joachim Kurzke

GT 1997; V004T16A003doi:https://doi.org/10.1115/97-GT-048

Topics: Engineering simulation , Gas turbines , Monte Carlo methods , Simulation , Engines , Pressure , Control systems , Design , Electromagnetic scattering , Errors

The International Engineering Student Exchange Program at the University of Waterloo

Joseph H. G. Howard, Herbert C. Ratz

GT 1997; V004T16A004doi:https://doi.org/10.1115/97-GT-065

Topics: Engineering students , Collaboration

A Three-Dimensional Turbine Engine Analysis Compressor Code (TEACC) for Steady-State Inlet Distortion

Alan Hale, Walter O’Brien

GT 1997; V004T16A005doi:https://doi.org/10.1115/97-GT-124

Topics: Compressors , Gas turbines , Steady state , Blades , Rotors , Design , Flow (Dynamics) , Modeling , NASA , Rotation

Real-Time Fault Identification for Developmental Turbine Engine Testing

Donald J. Malloy, Mark A. Chappell, Csaba Biegl

GT 1997; V004T16A006doi:https://doi.org/10.1115/97-GT-141

Topics: Gas turbines , Testing , Engines , Condition monitoring , Cycles , Sensors , Calibration , Computers , Steady state , Transients (Dynamics)

Performance Deterioration Modeling in Aircraft Gas Turbine Engines

Anthony V. Zaita, Greg Buley, Glen Karlsons

GT 1997; V004T16A007doi:https://doi.org/10.1115/97-GT-278

Topics: Aircraft , Gas turbines , Modeling , Engines , Compressors , Design , Erosion , Simulation models , Steady state , Turbines

Acoustically Controlled Combustor NO_x

Peter J. Vermeulen, Venkataramanayya Ramesh

GT 1997; V004T16A008doi:https://doi.org/10.1115/97-GT-303

Topics: Acoustics , Combustion chambers , Nitrogen oxides , Design , Stress , Aerodynamics , Air flow , Exhaust systems , Gas turbines , Pipes

Developing a Cooperative International Program in Graduate Education and Research

Juan Oliveras, Lloyd E. Barrett, Ronald D. Flack

GT 1997; V004T16A009doi:https://doi.org/10.1115/97-GT-313

Topics: Bearings , Education , Engineers , Flow (Dynamics) , Gas turbines , Petrochemicals , Rotordynamics , Students , Turbomachinery

A One Dimensional, Time Dependent Inlet / Engine Numerical Simulation for Aircraft Propulsion Systems

Doug Garrard, Milt Davis, Jr., Steve Wehofer, Gary Cole

GT 1997; V004T16A010doi:https://doi.org/10.1115/97-GT-333

Topics: Aircraft propulsion , Computer simulation , Engines , Gas turbines , Flow (Dynamics) , Simulation , Compressors , Computers , Momentum , NASA

IGTI Scholar Award

Flutter and Resonant Vibration Characteristics of Engine Blades: An IGTI Scholar Paper

A. V. Srinivasan

GT 1997; V004T17A001doi:https://doi.org/10.1115/97-GT-533

Topics: Blades , Engines , Flutter (Aerodynamics) , International Gas Turbine Institute , Resonance , Vibration , Gas turbines , Governments , Power stations , Reliability