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TEGID-09. 3 rd Meeting of the IWG GTR No. 7 Draft Status Report of the BioRID TEG. Bernd Lorenz (BASt) Chairman Geneva,17 th May 2010. Meetings. 22 nd January 2010: last official Global BioRID User (WebEX) Meeting (GBUM) chaired by Mike Beebe (Denton)

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3 rd meeting of the iwg gtr no 7 draft status report of the biorid teg

TEGID-09

3rd Meeting of the IWG GTR No. 7 Draft Status Report of the BioRID TEG

Bernd Lorenz (BASt)

Chairman

Geneva,17th May 2010


Meetings
Meetings

  • 22nd January 2010: last official Global BioRID User (WebEX) Meeting (GBUM) chaired by Mike Beebe (Denton)

  • 3rd February: joint with IWG GTR No. 7 - Tokyo

  • 15th of March: WebEX meeting (hosted by Denton)

  • 28th April: WebEX Meeting (hosted by FTSS)

  • Next WebEX meeting 22nd June


Issues under discussion research
Issues under Discussion / Research

  • Neck forces Fx (GM, Denton)

  • Harmonized Drawings (Denton and FTSS)

  • Improved certification procedure and corridors (Denton and FTSS)

  • Spine set-up for different seat back angles (Japan, PBD)

  • Repeatability and Reproducibility (Ford, PDB et al.)


Progress reached so far 1
Progress reached so far (1)

Neck Forces Fx (issue raised by GM)

  • An issue was raised with regard to rising neck forces Fx during a test series. Investigations of Denton came to the conclusion that wrongly a HIII scull cap was mounted (interference with the cable wiring).

    -> Denton will come up with a solution how to avoid the mounting of a wrong scull cap on the BioRID (technical bulletin).


Progress reached so far 2
Progress reached so far (2)

Harmonization of Drawings (Denton/FTSS)

  • Most parts have been analyzed/discussed and agreement was reached on tolerances etc.

  • It is expected that Denton and FTSS will finish the common work on harmonized drawings by end of June (?).


Progress reached so far 3
Progress reached so far (3)

Improved certification procedure and corridors (Denton, FTSS et al.)

Background: the (old) standard certification procedure does not sufficiently differentiate between dummies and has no surrogate for a head restraint as limitation for the head rotation motion during certification impact. For the generation of the pulse a foam was used what could cause some problems (R&R, due to different batches etc.)

  • New certification sled(s) designed, built and tested

  • Foam replaced by spring-damper-system

  • Artificial head restraint added

  • First ideas of certification corridors proposed by Denton on the basis of tested different BioRIDs

  • Further testing/improvement in progress


Progress reached so far 4
Progress reached so far (4)

Spine set-up for different seat back angles (Japan, PBD)

Background: at present the BioRID is designed/used for dynamic tests at torso angles/seat back angles around 25 degree. For some cars (e.g. Vans) the torso/seat design angle lays around 20 degree or even steeper. For regulatory purposes dynamic testing at design angle is appropriate.

  • New spine adjustment tool provided by Denton

  • Tests performed by PDB and Japan

  • At steeper torso angle interaction of the jacket

  • Further work is needed


Progress reached so far 5
Progress reached so far (5)

Repeatability and Reproducibility (Denton, Ford, PDB et al.)

Several issues identified which seems to influence R & R

  • Issues: jacket (e.g. stiffness), cable exit at head, friction of steel ropes, lower spine?

  • Differences might be identified by new certification procedure(s) for components

  • General issue if results are presented/compared: are we talking about the same dummy status/built level/up-grade?


General remarks outlook
General remarks / Outlook

  • Attendance at the WebEx meetings is good

  • Fruitful discussions and in general good support by the attending organisations

  • Testing/research/further investigations in progress

  • Group seems to be able to propose a schedule/time line to make the BioRID ready for regulation by Autumn this year


3 rd meeting of the iwg gtr no 7 draft status report of the biorid teg

Thank you for your attention!

Bernd Lorenz

lorenz@bast.de