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
The fall 2002 meeting will be held at North Dakota
State University on September 30 – October 2, 2002.
Host: Prof. Alan Kallmeyer.
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".
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.
"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.
LCF
Life of a Centrifugal Compressor at Elevated Temperature
Friction Stir Joining -- Basic Principles and
Potential Applications
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