SAE Fatigue Design And Evaluation Committee Meeting – Mini-Minutes

April 15-17, 2002

Ford Research Laboratories – Dearborn, MI

Hosts: J. Bonnen, R. Chernenkoff, C.-C. Chu, A. Conle

 

These are NOT official minutes. Full minutes will be distributed at a later date.

 

The fall 2002 meeting will be held at North Dakota State University on September 30 – October 2, 2002.  Host: Prof. Alan Kallmeyer.

 Monday, April 15, 2002

Members of the FD&E Executive Committee met with representatives of the SAE Troy, MI office to discuss the role of SAE in serving the needs of the FD&E committee (i.e. meeting support, publications, short course, etc.).  Several FD&E members listed the contributions of the FD&E committee to SAE over the last 25 years.  The SAE representatives said that FD&E was a unique committee in that it covers several areas within the SAE structure, i.e. professional development, engineering meetings, standards.    The SAE representatives requested permission to observe the committee meeting on Tuesday, April 16, 2002.  The Executive Committee agreed.  SAE will contact Chairman John Hakala with suggestions on they can serve the FD&E committee by the next meeting at NDSU.

 

Tuesday, April 16, 2002

SAE had three representatives on site to observe the FD&E meeting and help with registration.

Main Committee Meeting:  Chairman John Hakala called the meeting to order. Local arrangements were reviewed by Russ Chernenkoff.  John Bonnen made a call for papers for the "Fatigue Research and Applications" session at the 2003 SAE Congress.

Henry Fuchs Student Award: The presentation was made by Paul D. Samuel – University of Maryland. The title of his presentation was "Planetary Gearbox Diagnostics".

The Surface Enhancement Division did not meet during the Spring 2002 FD&E Committee Meeting.

Structural Analysis Division –  Mary Wickham, Chairperson.  The minutes from the October meeting were approved.  The following presentations were made:

"Structural Durability Analysis of an ATV"  D. Keniray discussed the structural durability analysis of the Honda ATV frame with the objective being to correlate measured strains and make life predictions.  FEDEM simulation model was constructed.

"Optimum Shape Design for Fatigue Application – Notched and Welded Components."  G. Glinka discussed reducing a Kt in a welded structure by weld shape optimization.

Material Properties Division    John Bonnen, Chairperson.  The minutes from the October meeting were approved.  The following presentations were made:

"Effect of Frequency and Mean Stress on the Fatigue Behavior of Short Glass Fiber Reinforce Nylon,"  Alan Kallmeyer showed that strength increased as strain rate increased during tensile tests and fatigue life decreased as frequency increase during fatigue tests (temperature effect?).

"Short Crack Growth Under Mixed-Mode Loading," H. Zhang observed short crack growth rates and paths of SAE 1045 using four point bending specimens with smooth and notched surfaces.

"Impact of  Strain Life Confidence Bands on the Cyclic Stress-Strain Curve," – J. Bonnen.

"Update on High Mean Stress Project," R. Stephens is working with Caterpillar on mean stress in bolts.

Fatigue Life Prediction Division – Al Conle, Chairperson.  The minutes from the October meeting were approved.

The following presentations were made:

"A Method for Determining Reliability-based Strain-life Curves," C. Williams

"Fatigue and Deformation of Case-Hardened Components," F. Yin analyzed several models to predict fatigue life of case-hardened components.

"Benchmarking Fatigue Software on Automotive Components and Improvements in Bending-Torsion Predictions," H. Dannbauer discussed differences in fatigue life prediction methods using real world examples – notched shafts and truck wheel.

 

Road Load Data Acquisition Division – Christoph Leser, Chairperson.  The minutes from the October meeting were approved.  The following presentations were made:

"Progress Report on an ATV Loads Model," University of Toledo

"An Exhaust System Load Cell, Design Parameters and Application Scenario,"  G. Grenier discussed the development of a light weight load cell for loads analysis of an exhaust system from a paper model > computer model > prototype.

"Automated Road Load Data Analysis for Verification of Data Integrity,"  C. Leser discussed anomaly detection software.

C. Leser announced there was one disapproval for the balloted Rainflow Standard.

Component Testing Division – Paul Lubinski, Chairperson.  The minutes of the October meeting were approved.  The following presentations were made:

"Calculation of Creep Strains in Notches Using Neuber-type Approach, " University of Waterloo.

 

Dynamic Stiffness Method for Determining Fatigue Dammage in Spot-Welded Components," D-G Shang discussed the measurement of dynamic response frequencies during fatigue damage of spot welds.

Correlation of Fatigue Crack Growth for Different R-ratios Using DK+max Parameters," S. Dinda.

Wednesday, April 17, 2002

 

Special Technical Session

 

Residual Stress Measurements in Automotive Powertrain Components

Mike Brauss,  Proto Manufacturing, LTD

 

Military Packaging

Tom Burmeister,  U.S. Army -TACCOM

 

Fatigue Performance of Corroded Reinforced Concrete Beams Repaired with Fibre Reinforced Polymers

Dr. Sobhy Masoud,  University of Waterloo

 

LCF Life of a Centrifugal Compressor at Elevated Temperature

Neil Craft,  Williams International

 

VIRTTEX Technology - simulator

Jeff Greenberg, Ford Motor Company

Friction Stir Joining -- Basic Principles and Potential Applications

Prof. Bill Yuh J. Chao,  University of South Carolina

 

Divisional planning sessions were held concurrently in two rooms.  The future work of the five divisions will be coordinated by the chairperson and task group leaders.  Documentation of future work plans will be included in the full minutes from the division chairs.

 

Respectfully submitted by:   Russ Chernenkoff  SAE FD&E Vice-Chair