Preliminary Program

First International Conference
on
FATIGUE DAMAGE IN STRUCTURAL MATERIALS

Tara Hyannis Hotel
Hyannis (on Cape Cod), Massachusetts
September 22-27, 1996

Organizers

A.K. Vasudevan
Office of Naval Research

J.C. Cammett
Naval Aviation Depot

T. Nicholas
Wright Patterson AFB

C.A. Bigelow
FAA Technical Center

Engineering Foundation
345 East 47th Street
New York, NY 10017
1-212-705-7836; Fax: 1-212-705-7441
E-mail: engfnd@aol.com
World Wide Web: http://www.engfnd.org/engfnd

Sunday, September 22, 1996

3:00 pm - 6:30 pm Registration

5:00 pm - 6:30 pm Opening Reception

6:30 pm - 8:30 pm Dinner


 INVITED OVERVIEW TALKS                                                              
* INVITED TALKS:     30 minutes presentation + 15 minutes discussion                 
  REGULAR TALKS:     20 minutes presentation + 10 minutes discussion                 
                                                                                     
All authors are required to bring their manuscripts to the Conference
(Collected by Barbara Hickernell) for publication in the International 
Journal of Fatigue.         
                                                                                     
*  INVITED TALKS:     15 total typed pages + graphs, tables                          
   REGULAR TALKS:     8 total typed pages + graphs,  tables                           
                                                                                     
 Journal instructions for the authors are enclosed                                   

Monday, September 23, 1996

7:00 am - 8:15 am Breakfast

8:15 am - 8:30 am WELCOME ADDRESS
Conference Organizers

SESSION I: OVERVIEW TALKS
Chair: Dr. Catherine A. Bigelow
FAA, NJ

8:30 am - 9:15 am *1. Issues in Aircraft Maintenance & Repairs
U. Goranson
Boeing Airplane Company, Seattle, WA

9:15 am - 10:00 am *2. Alloy Microstructures in Design
J. Hall
AlliedSignal Engine Group, Phoenix, AZ

10:00 am - 10:30 am Coffee Break

10:30 am - 11:15 am *3. Fatigue Issues in Design
R. Delaneuville
Pratt & Whitney, FL

11:15 am - 11:45 am 4. Challenges & Issues in Life Prediction
A. K. Vasudevan, ONR, Arlington, VA.
J. T. Cammett, NADEP, Cherry Point, NC
C. A. Bigelow, FAA, Atlantic City International Airport, NJ
T. Nicholas, WPAFB, Dayton, OH

12:00 noon - 1:15 pm Lunch

1:15 pm - 2:00 pm *5. Fretting Fatigue in Engineering Alloys
T. C. Lindley
Imperial College of Science & Technology, London, UK

2:00 pm - 2:30 pm 6. Role of Plasticity on Short & Long Fatigue Cracks
S. Suresh
MIT, Cambridge, MA

2:30 pm - 6:00 pm Ad hoc sessions/free time

6:00 pm - 7:30 pm Dinner

7:30 pm - SESSION II: FATIGUE CRACK INITIATION
Chair: Dr. H. Doker
DLR, Koln, Germany

7:30 pm - 8:00 pm 7. Effect of Grain Size on Cyclic Plasticity & Fatigue Crack Initiation in Nickel
D. J. Morrison & J. C. Moosbrugger
Clarkson University, Potsdam, NY

8:00 pm - 8:30 pm 8. Microstructural Fracture in Metal Fatigue
L. Lawson
Bradford, PA;
E. Y. Chen
GE Corporation R&D, Schnectady, NY;
M. Meshii
Northwestern University, Evanston, IL

8:30 pm - 9:00 pm 9. Fatigue Life Extension by Martensitic Transformation in an Austenitic Stainless Steel
Y. Yamabayashi, T. H. Myeong, M. Shimojo & Y. Higo
Tokyo Institute of Technology, Yokohama, Japan

9:00 pm - 10:00 pm Social Hour

Tuesday, September 24, 1996

7:30 am - 8:30 am Breakfast

8:30 am SESSION II: FATIGUE CRACK INITIATION (continued)
Chair: Dr. H. Doker
DLR, Koln, Germany

8:30 am - 9:00 am 10. Fatigue Microcrack Distributions & the Reliability of a Ni-base Superalloy
E. Y. Chen
GE Corporate R&D, Schnectady,NY ;
S. Sauer, University of Stuttgart, Germany;
M. Meshii, Northwestern University, Evanston, ILL.

9:00 am - 9:30 am 11. Dwell Sensitive Fatigue in a Near Alpha Titanium Alloy at Ambient Temperature
M. R. Bache1, M. Cope2, H. M. Davies1, W. J. Evans 1 & G. Harrison3
1. University of Wales, Swansea, UK; 2. Rolls Royce, Derby, UK & 3. Defence Research Agency, Hampshire, UK

9:30 am - 10:00 am 12. Damage Mechanisms of Single & Polycrystalline Ni-base Superalloys SC16 & IN738LC under High Temperature LCF Loading
W. Chen, A. Dudka, H.-J. Fecht
Technical University Berlin, Berlin, Germany;
R. P. Wahi
Hahn-Meitner-Institute Berlin GmbH, Berlin, Germany.

10:00 am - 10:30 am Coffee Break

10:30 am SESSION III: SHORT FATIGUE CRACKS
Chair: K.V. Jata
WPAFB, Dayton, Ohio

10:30 am - 11:00 am 13. Short Fatigue Cracks-Analysis & Implications
K. Sadananda
Naval Research Labs, Washington, DC;
A. K. Vasudevan
Office of Naval Research Labs, Arlington, VA

11:00 am - 11:30 am 14. Fatigue Performance of 6021 Aluminum Alloy
M. N. James
University of Plymouth, Devon, UK

11:30 am - 12:00 noon 15. Fatigue Growth of Small Corner Cracks in Aluminum 6061-T651
R. L. Carlson, D. L. Steadman, D. S. Dancila &
G. A. Kardomateas
Georgia Institute of Technology, Atlanta, GA

12:00 noon - 1:30 pm Lunch

1:30 pm - 2:00 pm 16. Mechanics Challenges in Small Fatigue Crack Growth
D. L. McDowell
Georgia Institute of Technology, Atlanta, GA

2:00 pm - 2:30 pm 17. On the Kinetics of Small Fatigue Crack Growth
Xu-Dong Li
The Open University, Milton Keynes, UK

2:30 pm - 3:00 pm 18. Effective-Strain Fatigue Life Data for Variable Amplitude Fatigue
T. H. Topper & T. Lam
University of Waterloo, Waterloo, Canada

3:00 pm - 3:30 pm Coffee Break

3:30 pm - SESSION IV: LONG FATIGUE CRACKS
Chair: T. Nicholas
WPAFB, Ohio

3:30 pm - 4:00 pm 19. Fatigue Crack Growth Threshold: Implications, Determination & Data Evaluation
H. Doker
German Aerospace Research Establishment, Koln, Germany

4:00 pm - 4:30 pm 20. Effect of Grain Size and Precipitate Microstructure on Long Fatigue Cracks
A. K. Vasudevan
ONR, Arlington, VA;
K. Sadananda
NRL, Washington, DC;
K. Rajan
RPI, Troy, NY

4:30 pm - 5:00 pm 21. Mixed Mode II-III Fatigue Threshold Behavior for Aluminum Alloys 2014-T6 & 7075-T6
A. K. Hellier, A. G. Crosky & A. A. Merati
The University of New South Wales, Sydney, Australia

5:00 pm - 5:30 pm 22. Physical Meaning of DKRP and Fatigue Crack Propagation in the Residual Stress Distribution Field
M. Toyosada, T. Niwa & J. Sakai
Kyushu University, Fukuoka, Japan

5:30 pm - 6:30 pm Ad hoc discussions/free time

6:30 pm - 8:00 pm Dinner

8:00 pm - 9:00 pm Social Hour

Wednesday, September 25, 1996

7:00 am - 8:30 am Breakfast

8:30 am SESSION IV: LONG FATIGUE CRACKS (continued)
Chair: T. Nicholas
WPAFB, OH

8:30 am - 9:00 am 23. Fatigue Crack Growth Mechanics & Mechanisms under Variable Amplitude Loading
N. Ranganathan
ENSMA, Futuroscope, France

9:00 am - 9:30 am 24. The Growth of Cracks in Ti-6Al-4V Plate under Combined High & Low Cycle Fatigue
B. E. Powell, M. Hawkyard & L. Grabowski
Portsmouth Polytechnic, Portsmouth, UK

9:30 am - 10:00 am 25. Unique Fatigue Threshold & Growth Properties of Welded Joints in Tensile Residual Stress Field
A. Ohta, N. Suzuki & Y. Maeda
National Research Institute of Metals, Tsukuba, Japan

10:00 am - 10:30 am Coffee Break

10:30 am - SESSION V: LONG FATIGUE CRACKS (continued)
Part I: Corrosion
Chair: T. Flournoy
FAA, Atlantic City, NJ

10:30 am - 11:00 am 26. Environmental Interactions with Fatigue Crack Growth in Alpha/Beta Titanium Alloys
W. J. Evans, M. Bache
University of Wales, Swansea, UK;
M. McElhone, L. Grabowski
Rolls Royce, Derby, UK

11:00 am - 11:30 am 27. Fatigue Crack Growth from Stage-I to Stage-II in a Corrosive Environment
R. Hamano
National Research Institute of Metals, Tsukuba, Japan

11:30 am - 12:00 noon 28. Fatigue Damage under Corrosion Environment
A. K. Vasudevan
ONR, Arlington, VA;
K. Sadananda
NRL, Washington, DC

12:00 noon - 1:30 pm Lunch

1:30 pm - 6:00 pm Ad hoc discussions/free time

6:00 pm - 7:30 pm Dinner

7:30 pm - Part 2: Crack Closure
Chair: K. Donaldson
MTS, MN

7:30 pm - 8:00 pm 29. Closure Measurement Techniques
J.K. Donald
Fracture Technology Associates, Bethlehem, PA

8:00 pm - 8:30 pm 30. Modeling of Roughness Induced Fatigue Crack Closure
Ana Maria Garcia & H. Sehitoglu
University of Illinois, Urbana, IL

8:30 pm - 9:00 pm 31. Characterization of Crack-Tip & Geometry Induced Closure
W. J. Evans
University of Wales, Swansea, UK;
S. H. Spence
British Aerospace, Lancershire, UK.

9:00 pm - 10:00 pm Social Hour

Thursday, September 26, 1996

7:00 am - 8:30 am Breakfast

8:30 am - SESSION VI: MICROSCOPY
Chair: A. Conli
Ford Motor Co., Dearborn, MI

8:30 am - 9:00 am 32. Observation of Fatigue Damage in Structural Steel by Scanning Atomic-Force Microscopy
Y. Nakai, S. Fukuhara & J. Ohnishi
Osaka University, Osaka, Japan

9:00 am - 9:30 am 33. Assessment of Flight Load Spectrum from Fracture Surface Topography
T. Kobayashi, C. G. Schmidt & D. A. Shockey
SRI International, Menlo Park, CA

9:30 am - 10:00 am Coffee Break

10:00 am SESSION VII: MODELING
Chair: G. Schneider
Sykorsky Aircraft, CT

10:00 am - 10:30 am 34. Cyclic Relaxation in Compression-Dominated Structure
E. J. Tuegel & C. L. Brooks
McDonnell Douglas Aerospace, St. Louis, MO

10:30 am - 11:00 am 35. Cumulative Fatigue Damage Modeling-Crack Nucleation & early Crack Growth
G. R. Halford
NASA Lewis Research Center, Cleveland, OH.

11:00 am - 11:30 am 36. Analytical Modeling for Life Extension of Aging Aircraft Equipment
R. A. Sire & S. W. Hopkins
Failure Analysis Associates, Menlo Park, CA.

11:30 am - 12:00 noon 37. Modeling of Cyclic Stress-Strain Behavior & Damage Mechanisms under Thermomechanical Fatigue Conditions
H. J. Maier & H.-J. Christ
Universitat-GH-Siegen, Siegen, Germany

12:00 noon - 1:30 pm Lunch

1:30 pm SESSION VII: MODELING (continued)
Chair: T. McKenna
ONR, VA

1:30 pm - 2:00 pm 38. Analysis & Prediction of Microstructural Effects on
Long-Term Fatigue Performance of an Aerospace Aluminum Alloy
P.E. Magnusen, R.J. Bucci, A.J. Hinkle
& J.R. Brokenbrough
Aluminum Company of America, Alcoa Center, PA.

2:00 pm - 2:30 pm 39. Microstructure Based Fatigue Life Predictions for Thick Plate 7050-T7451 Airframe Alloys
M. A. Przystupa
University of California, Los Angeles, CA;
R. J. Bucci, P. E. Magnusen & A. J. Hinkle.
Aluminum Company of America, Alcoa Center, PA

2:30 pm - 3:00 pm 40. Role of Crack Shape Short Crack Behavior in Ti- Alloys: Modeling & Experiments
K. S. Ravichandran
University of Utah, Salt Lake City, UT

3:00 pm - 3:30 pm Coffee Break

3:30 pm SESSION VIII: PROBABILITY & STATISTICS
Chair: R. Everett
Army-NASA, VA

3:30 pm - 4:00 pm 41. Probabilistic Mechanics Modeling of Fatigue Damage in Structural Metallic Materials
A.B.O. Soboyejo
MATENG Inc., Columbus, OH;
B. M. Rabeeh, S. I. Rokhlin & W. O. Soboyejo
The Ohio State University, Columbus, OH

4:00 pm - 4:30 pm 42. Stochastic Differential Equations in Modeling of Damage Evolution
L.L. Mishnaevsky
University of Stuttgart, Stuttgart, Germany

4:30 pm - 5:00 pm 43. Investigation of Prediction Errors at Variable Amplitude Fatigue
T. Svensson
Swedish National Testing & Research Institute, Boras, Sweden;
J. de Mare
Chalmers University of Technology, Gotenborg, Sweden

5:00 pm - 5:30 pm 44. Thickness Effects on the Fatigue Strength of Welded Steel Cruciforms
D. P. Kihl
David Taylor Model Basin CDNSWC, Bethesda, MD;
S. Sarkani
The George Washington University, Washington, DC;
J. E. Beach
David Taylor Model Basin CDNSWC, Bethesda, MD

5:30 pm - 7:30 pm Ad hoc sessions/free time

7:30 pm - 9:30 pm Conference Dinner

Friday, September 27, 1996

7:00 am - 8:30 am Breakfast

8:30 am SESSION IX: APPLICATIONS:
Chair: J. T Cammett
NADEP, Cherry Point, NC

8:30 am - 9:00 am 45. Fatigue Analysis and Local Stress-Strain Approach in Complex Vehicular Structures
F. A. Conle & C.-C. Chu
Ford Motor Company, Dearborn, MI

9:00 am - 9:30 am 46. Fatigue Life Prediction of Mutiaxially Loaded Structures in the Ground Vehicle Industry
C.-C. Chu
Ford Motor Company, Dearborn, MI

9:30 am SESSION X: APPLICATIONS (continued)
Chair: Dr. J. T. Cammett
NADEP, Cherry Hill, NC.

9:30 am - 10:00 am 47. Fatigue Crack Initiation & Growth in Riveted Specimens
Z.M. Conner, J. Dolbow, M.E. Fine, B. Moran &
N. Sukumar
Northwestern University, Evanston, IL

10:00 am - 10:30 am Coffee Break

10:30 am - 11:00 am 48. Benefits of Split Mandrel Coldworking of Large Fastener Holes
A. Leon & M. Weigel
West Coast Industries, Seattle, WA

11:00 am - 11:30 am 49. Fatigue Crack-Residual Stress Interactions at Cold Expanded Fastener Holes
L. Edwards, A.T. Ozdemir & D.Q. Wang
The Open University, Milton Keyes, UK

11:30 am - 1:00 pm SUMMARY/COMMENTS by
T. Nicholas, WPAFB, OH
M. Meshii, Northwestern University, IL
K. Sadananda, NRL, Washington, DC
C. Brooks, MACAIR, St. Louis, MO

1:00 pm Lunch and Adjournment