MADE Meeting Minutes
February 24, 1998
Phoenix, AZ
Attendance
Paul Russell - Hewlett-Packard
Carles Vinas - Hewlett-Packard
Bill Kipp - Lansmont
Dick Sheehan - 3M
Derek Haines - Compaq
Jorge Marcondes - SJSU
Denny Stover - Dow Plastics
Ron Johnson - Intel
Julian Kim - Sony
Kevin Howard - Hewlett-Packard
Greg Hoshal - IST
Overview
Paul Russell and Jorge Marcondes gave the group a general
overview of the MADE progress since the last meeting held at
TransPack '97.
Data Results of Alpha Phase
- Six round trips were recorded by both units; 2 files were lost.
- Looked at drops above 10 inches (equivalent drop height).
- Examined same time stamped events
- There was disagreement between units
- Alpha Phase
- First blush was that we have a problem.
Side by side recorders were showing a wide
variance in recorded events. Recorder
manufacturer became involved to analyze files
and came back with more differences.
- Issue was that the manufacturer were looking at
different parts of an event in what was termed an
"Event Storm." This occured because the "window"
recorded did not agree completely between units
(although the units were triggered by the same
event, the recorded wave forms started and ended
at different times, sometimes missing important
parts of an event).
- Conclusion
- Waveform good agreement between units.
- Recorders software analysis did not agree.
- System analysis tools are different so events didn't map
together
- Real events - almost no free fall events
happened, only impacts
- no flat line in distribution, always
activity
- Lansmont - Based on the findings, Lansmont is moving
forward with an independent research study to
understand how time / acceleration can translate
in to usable lab testing.
- To keep MADE on track and speed up progress,
Lansmont offered 12 Saver units to be used in
the Beta phase. These units can be used until
the end of the year at no cost. Lansmont will
also provide funds for the analysis of the
collected data.
- The group accepted the generous offer. IST EDR
3 units will still be used in Beta, as they
become available, and IST offered to analyze
those files.
Finalize Alpha - The group concluded that Alpha phase still
needs to be concluded on characterizing the
differences seen by both recorder units.
ISTA - Interested in partnering with the MADE task group.
- They can add resources and have carriers in their membership.
- They have a process in place to register companies for
the File Naming Protocol.
Package System Calibration Standard needs to be finalized by the
Test Plan Committee.
Next Meeting
- ISTA Conference - April 16 - Orlando, FL