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ISCORMA-4 Program

Registration

Sheraton Cavalier Hotel, Calgary on the first floor

Monday, 27 August 2007 - 2:00 p.m. - 8:00 p.m.
Tuesday, 28 August 2007 - 7:00 a.m. – 5:00 p.m.
Wednesday, 29 August 2007 - 8:00 a.m. – 5:00 p.m.
Thursday, 30 August 2007 - 8:00 a.m. – 5:00 p.m.

Welcome Reception
Monday evening, 27 August 2007 6:00 p.m. to 8:00 p.m.
Sheraton Cavalier Hotel, Calgary, Alberta, Canada
Sheraton East/West Ballroom – 1st Floor

Welcome by Donald E. Bently - Chairman, ISCORMA-4

Welcome to Calgary - Representative - City of Calgary


Tuesday, 28 August 2007 | 9:30 a.m. – 11:30 a.m.

Room C: Mcknight Ballroom, 1st Floor

(T1C) KEYNOTE PRESENTATION
Session Co-Chairs:
D. E. Bently and J. T. Sawicki

"Experiences With Flutter Vibrations of Low-Pressure Steam Turbine Blades."
Dr. Neville Rieger

Paper copies of this presentation will be distributed during the ISCORMA-4 Conference.

Dr. Neville Rieger's presentation will not appear in the Proceedings Book but it will be included on the ISCORMA-4 CD.

LUNCH 11:30 a.m. to 1:30 p.m.

Tuesday, 28 August 2007 | 1:30 p.m. – 3:00 p.m.

Room A (Alberta)
Room B (Deerfoot)
Room C (McKnight)

(T2A) GENERAL ROTORDYNAMICS

Session Co-Chairs:
R.G. Kirk and
M. L. Adams

• (401) A Lateral Rotor Dynamic Calculation Method for Asynchronous Machines Considering Electromagnetic Forces by Analyzing the Calculated Rotor Orbit.
U. Werner

• (112) Analysis and Diagnosis of Vibration Induced Uneven Commutator Wear on a Commuter Jet APU.
M. L. Adams

• (511) High Temperature Turbine Applications Using Open Porous Metallic Foams With Thermal Barrier Coatings and Cooling Hole Arrays.
E. Kreutz, K. Walther, R. Poprawe, S. Angel, E. Ratte, W. Bleck, K. Bobzin,
E. Lugscheider, R. Nickel, K. Richardt, N. Bagcivan

(T2B) ADVANCED SEMINAR

Session Chair:
C. T. Hatch

• Phase and Vibration Vectors.
C. T. Hatch

• Data Plots.
C. T. Hatch

(T2C) DIAGNOSTICS

Session Co-Chairs:
J. T. Sawicki, G. C. Brito, Jr.

• (119) No Vibration – No Problem: Or Is There?
G. R. Thomas (presented by C. Sever)

• (414) Model Based Diagnostics of Rotating Machinery.
J. Iwaniec, J. Bednarz, T. Uhl, T. Barszcz

• (104) Dynamic Behavior of Large Rotating Electric Machines (Analysis With Simplified Analytical Mathematical Models).
G. C. Brito, Jr., K. B.Brol, K.A. Brol

COFFEE BREAK 3:00 p.m. to 3:15 p.m.

Tuesday, 28 August 2007 | 3:15 p.m. – 4:30 p.m.

Room A (Alberta)
Room B (Deerfoot)
Room C (McKnight)

(T3A) SEAL DYNAMICS

Session Co-Chairs:
G. Melani, R. G. Kirk

• (412) The Influence of Labyrinth Seal Design on Steam Turbine Rotor Stability: Parametric Study.
L. Prchlik, M. Wittner, T. Misek, P. Albl

• (307) CFD Results of Inlet and Reverse Pumping Flow for Common Labyrinth Seal Leak Path Geometries.
R. G. Kirk, Z. Guo

(T3B) ADVANCED SEMINAR

Session Chair:
C. Sever

• Fundamental Synchronous Rotor Response.
C. Sever

(T3C) ROTOR TO STATIONARY PART RUBBING

Session Co-Chairs:
H. Ulbrich, R. S. Norek

• (405) Experimental Studies of Rub Control With an Active Auxiliary Bearing.
H. Ulbrich, L. Ginzinger

• (503) The Influence of Linear and Nonlinear Modes on the Dry Friction Backward Whirl in Rotor/Stator Systems.
J. Jiang, X. Zhang


“DINNER WITH A VIEW” – Calgary Tower (OPTIONAL ACTIVITY)
5:15 p.m.– Meet in Hotel Lobby-Near Main Entrance
Coach Departs Promptly at 5:30 p.m.
(Tickets available at 60 USD per person)

Wednesday, 29 August 2007 | 9:00 a.m. – 10:30 a.m.

Room A (Alberta)
Room B (Deerfoot)
Room C (McKnight)

(W1A) TILTING PAD BEARINGS

Session Co-Chairs:
D. Fleming, M. Martyna

• (312) Frequency Effects on Linear Stiffness and Damping Coefficients of Tilting-Pad Journal Bearings.
W. Dmochowski

• (502) Stability of Tilting 5-Pad Journal Bearing.
S. Strzelecki, S. M. Ghoneam, Z. Towarekv

• (309) Non-Linear Model of a Tilting Pad Gas Journal Bearing for the Power MEMS Microturbine.
M. Martyna, Z. Kozanecki

(W1B) ADVANCED SEMINAR

Session Chair:
C. Sever

• The Art of Machinery Diagnostics.
C. Sever

(W1C) IDENTIFICATION

Session Co-Chairs:
J. T. Sawicki, T. Pumhöessel

• (115) Pattern Recognition Based Shaft Angle Encoder.
A. Pilat, J. T. Sawicki

• (410) Detection of Asymmetry in Flexible Rotating Systems From the Zeros of System Identified Models.
Y-H. Seo, C-W. Lee, K. C. Park

• (109) Application of Acoustic Impulse Response in Diagnostic Tests of Rotor Blade in Stationary Conditions.
A. Kotowski, P. Lindstedt (presented by Z. Gosiewski)

COFFEE BREAK 10:30 a.m. to 10:45 a.m.

Wednesday, 29 August 2007 | 10:45 a.m. – 11:45 a.m.

Room A (Alberta)
Room B (Deerfoot)
Room C (McKnight)

(W2A) PRESSURIZED BEARING

Session Co-Chairs:
A. Canning, V. Barzdaitis

• (313) A Rotordynamic Model for Use in High-Speed Gas Bearing Testing.
C. T. Hatch, R. G. Colwell, M. J. Murray, D. E. Bently

• (116) An Externally Water Pressurized Bearing in a Hydro Generating Set.
A. Canning

(W2B) ADVANCED SEMINAR

Session Chair:
A. Muszynska

• Fluid Induced Instability.
A. Muszynska

(W2C) BALANCING

Session Co-Chairs:
Z. Racic, J. Meagher

• (111) Field Balancing of a Generator Using a Model-Based Method.
P. Pennacchi, N. Bachschmid, A. Vania

• (118) The Effect of Applied High Speed Balancing Method on Flexible Generator Rotor Response in Operation.
Z. Racic, J. Hidalgo

LUNCH 11:45 a.m. to 2:00 p.m.


Wednesday, 29 August 2007 | 2:00 p.m. – 3:30 p.m

Room A (Alberta)
Room B (Deerfoot)
Room C (McKnight)

(W3A) BEARING DYNAMICS

Session Co-Chairs:
M. P. Proctor, J. M Temis

• (311) The Effect of Structural Distortion on the Fatigue Life of Large-Diameter Ball Bearing.
J. T. Sawicki, S. A. Johansson, J. H. Rumbarger, R. B. Sharpless

• (310) Elastohydrodynamic Contact Theory in Foil Gasdynamic Bearing Model.
J. M. Temis, M.J. Temis, A.B. Meshcheryakov

• (513) New Facility to Test Fluid Film Journal Bearings at the NASA Glenn Research Center in Cleveland, Ohio, USA.
F. Dimofte, N. M. Ene, R. F. Handschuh, T. G. Keith, Jr.

(W3B) ADVANCED SEMINAR

Session Co-Chairs:
C. Sever, C. T. Hatch

• Why Root Locus is Better Than Logarithmic Decrement.
C. Sever

• Externally Pressurized Bearings Versus Magnetic Bearings.
C. T. Hatch

(W3C) MODELING

Session Co-Chairs:
A. Muszynska, H. Ecker

• (416) Discrete Modeling of Rotors: Methods and Limitations.
A. Muszynska, D. I. G. Jones

• (512) Modeling and Non Linear Control of a Toothless Self-Bearing Motor.
A. F. Lynch, T. R. Grochmal, C. P. Forbrich

• (113) Simulation of the Effects of the Unbalanced Magnetic Pull in Four-Poles Slim Generators.
P. Pennacchi, L. Frosini

COFFEE BREAK 3:30 p.m. to 3:45 p.m.

Wednesday, 29 August 2007 | 3:45 p.m. – 5:15 p.m.

Room A (Alberta)
Room B (Deerfoot)
Room C (Ritz)

(W4A) VIBRATION CONTROL

Session Co-Chairs:
J. Liu, U. Werner

• (403) Vibration Controlled Determination of the Clutch Angle for Single-Shaft Couplings.
M. Humer, J. Rosendahl

• (402) Vibration Suppression of Washing/Spin-Dryer Machine Using Discontinuous Spring Characteristics.
J. Liu, Y. Ishida

• (303) The Control of Bearing Stiffness Using Shape Memory.
A. W. Lees, S. Jana, D. J. Inman, M. P. Cartmell

(W4B) ADVANCED SEMINAR

Session Chair:
C. Sever

• Transducer Selection for Experimentation and Machinery Protection.
C. Sever

(W4C) BLADE DYNAMICS

Session Co-Chairs:
R. Norek, F. Dimofte

• (501) Parametric Control of Blade Vibrations in Rotating Machinery.
T. Pumhöessel

• (413) Lateral Forced Vibration of Beam with Material Damping.
R. S. Norek

(A copy of this paper (413) will be distributed during the ISCORMA-4 Conference.

This paper by R. S. Norek will not appear in the Proceedings Book, however it will be included on the ISCORMA-4 CD.)


EVENING On Your Own


Thursday, 30 August 2007 | 9:00 a.m. – 10:30 a.m.

Room A (Alberta)
Room B (Deerfoot)
Room C (McKnight)

(Th1A) GEAR TRANSMISSION

Session Co-Chairs:
D. Fleming, H. Kanki

• (411) Modeling and Testing of Gear Power Transmission.
V. Barzdaitis, M. Bogdevicius, P. Mažeika, R. Didziokas

• (510) Vibration Transmission Through Bearings With Application to Gearboxes.
D. P. Fleming

• (404) Study on Diagnostic Indicators of Gear Tooth Crack Length and Location in a Virtual Gear Transmission.
P. Forte, C. Carmignani, G. Melani

(Th1B) ADVANCED SEMINAR

Session Chair:
C. Sever

• 13,000 Hp Induction Motor - A Balancing Case History.
C. Sever

(Th1C) STABILITY

Session Co-Chairs:
P. Forte, H. Ecker

• (114) High Speed Turbocharger Instability.
R. G. Kirk, A. A. Kornhauser, J. Sterling, A. Alsaeed

• (504) Experimental Study of Destabilizing Force in Centrifugal Compressor Impeller.
H. Kanki, K. Adachi, M. Jyoutoku

• (202) Stability Limits of a Self-Excited Torsional Vibration System.
H. Ecker, H. Springer

COFFEE BREAK 10:30 a.m. to 10:45 a.m.

Thursday, 30 August 2007 | 10:45 a.m. – 11:45 a.m.

Room A (Alberta)
Room B (Deerfoot)
Room C (Ritz)

(Th2A) IDENTIFICATION

Session Co-Chairs:
A. F. Lynch, M. L. Adams

• (105) Development of Mechanical Exciter for Dynamic Testing of Heavy Structures and Foundations.
K. Ramakrishna, G. V. Subba Rao, M. Ghosh, K. Saibabu

• (301) Stiffness and Damping Results from Perturbation Testing of Externally Pressurized Radial Gas Bearings.
C. T. Hatch, R. G. Colwell, M. J. Murray, J. B. Gillis, D. E. Bently

(Th2B) ADVANCED SEMINAR

Session Co-Chairs:
D. E. Bently, A. Muszynska

• Rotor-To-Stationary Part Rub and Its Diagnosis.
A. Muszynska

(Th2C) STABILITY

Session Co-Chairs:
P. Pennacchi, J. M. Krodkiewski

• (201) Stability Analysis of a High-Speed Seal Test Rotor with Marginal and Extended Squeeze-Film Dampers – Theoretical and Experimental Results.
M. P. Proctor, E. J. Gunter

• (203) Stability Improvement of a Rotor System by Means of Flexible Sleeve Fluid Film Bearing.
X. Yu, J. M. Krodkiewski

LUNCH BREAK 11:45 a.m. – 2:00 p.m.

Thursday, 30 August 2007 | 2:00 p.m. – 3:30 p.m.

Room A (Alberta)
Room B (Deerfoot)
Room C (McKnight)

(Th3A) ROTOR CRACKS

Session Co-Chairs:
A. W. Lees, J. Meagher

• (107) Low-Pressure Turbine Rotor Crack Influence on Dynamic State of Large Power Turbo-Set: Numerical Analysis.
S. Banaszek

• (407) Characterization and Modeling of Shaft Cracks and Rotating Asymmetries.
J. Meagher, X. Wu

• (415) Vibration Based Method for Shaft Crack Detection.
Z. Gosiewski, J. T. Sawicki

 

(Th3C) ROTATING MACHINERY DIAGNOSTICS

Session Co-Chairs:
S . Verichev, J. M. Temis

• (507) Investigation of Transient Response Under Shock Load in a High Speed Separator With Nonlinear Support Elements.
Y. Zhang

• (509) Dynamic Behavior of GTU Rotor-Bearings-Casing System.
J. M. Temis, V. Belyaev, E. Petrov, M. J. Temis, A. Egorov


FREE TIME 3:30 p.m. - 5:30 p.m.
Cocktail Hour Prior to Dinner 5:30 p.m. - 6:30 p.m.
Held in Sheraton East/West Ballroom - First Floor
Award Banquet 6:30 p.m.
Entertainment: Bel Canto String Duet



Friday, 31 August 2007 | 8:15 a.m. – 6:30 p.m.

Optional Activity (Tickets are Available for 120 USD)

All Day Tour to Banff, Lake Louise, and Moraine Lake
Lunch in Banff

Meeting in Lobby of Sheraton Cavalier Hotel, Calgary at 8:15 a.m.
Coach Departs Promptly at 8:30 a.m.
Return arrival at Hotel - 6:30 p.m.