SAE Fatigue Design and Evaluation Committee Meeting

Unconfirmed Minutes

Kelly Donaldson (as a substitute for chairman Christoph Leser and co-chair Ray Thompson, who both could not attend) moderated the meeting.

 Rainflow standard – Mark Pompetzki suggested to take the established rainflow standard and expand it to handle expanded formats.

Time history format – It was officially suggested and moved in the planning meeting that we adopt the MTS RPC file format as a standard. The question was raised as to whether we need an ASCII standard.

Statistical analysis of data –

No efforts are currently undertaken at Virginia Tech.

Darrell has forwarded copy of thesis of Jason Roth to Christoph Leser. Any SAE member can request reprints from Christoph.

Art Page pointed out that he has given Darrell a 7 pass history of automotive data about 2 years ago.

It was suggested that we have an MP3 presentation at the next meeting.

It was suggested that Christoph give a presentation at a future meeting that describes ARMA using some realistic ground vehicle time histories.

ATV Contributions:

At the previous meeting there was some discussion about the need to instrument and measure the loads generated by the operator was conducted. These would include the seat, handle bars and foot pegs. Zhengxian Bai will investigate doing this. There was no information available from Zhengxian.

It was discussed that customer correlation is important and has three primary components; 1) road, 2) ballast, 3) driver characteristics. We will recommend that when we eventually publish the ATV project, that using good customer correlated loads input is important.

New Business:

Several items were brought up and discussed.

1. Presentation topics for future meetings;

• Data Validation – what is state-of-the-art
• Correlation – what aspects are important? - the model says displacement is x at point a, the test says displacement is y at point a….
• Data Characterization

• ARMA
• MP3

1. Division may want to look at taking a leading role in methods/techniques for predicting analytical loads based on previous loads. How might these drive simulation models? Art Page will give a 15-minute presentation on this topic at the next meeting. We also would like a presentation from the modeling side to discuss how this information is used as an input. Art said he would also be willing to discuss this at the next meeting.

 The meeting was adjourned.