Evaluation of the new certification test procedures Christian Gehre 2011-05-31

Evaluation of the new certification test Evaluation of the new certification test proceduresprocedures

Christian Gehre

2011-05-31

Christian Gehre, PDB

EVAluation PC Version 2.5.9.17

time [ms]00 20 40 60 80 100 120 140 160 180

mo

me

nt [

Nm

]1

51

05

00-5

-10

-15

-20

Upper neck moment MyUpper neck moment My

• Poor reproducibility of the BioRID in sled tests• Acceptable reproducibility in the “old” certification test

“Old” certification test could not distinguish between dummy specimen

EVAluation PC Version 2.5.9.14

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Nm

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Hard bucket seat, 16 kph pulse “Old” certification test

Dummy D006Dummy D007

Christian Gehre, PDB

Test matrixTest matrixDummy D006 & D007Dummy D006 & D007

w/o head rest, standard probe

Hard bucket seat

Adjustment of the dummy

w/o head rest, standard probe

w/ head rest, standard probe

jacket test, standard probe

Hard bucket seat

w/o head rest, standard probe

w/ head rest, standard probe

w/ head rest, heavy probe

Status

Adjustment

Verification

Christian Gehre, PDB

Results certification testsResults certification testsUpper neck moment MyUpper neck moment My

Standard probe Heavy probe

w/ Head restNo difference

between dummiesNo difference

between dummies

w/o Head restNo difference

between dummies

Torso jacketNo difference

between dummies

Dummy artefactDummy artefact

Christian Gehre

2011-05-31

Christian Gehre, PDB

Dummy artefactsDummy artefactsDesign of the dummyDesign of the dummy

Upper torso jacket bolts Inner plates

Christian Gehre, PDB

Dummy artefactsDummy artefactsKinematicsKinematics

Hard bucket seat

Vehicle seat

Load path shoulder to spine Interaction between bolts and plates (hard bucket seat)

w/ bolts

w/o bolts

Christian Gehre, PDB

EVAluation PC Version 2.5.9.17

time [ms]00 20 40 60 80 100 120 140 160 180

forc

e [N

]1

50

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05

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-50

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0

EVAluation PC Version 2.5.9.17

time [ms]00 20 40 60 80 100 120 140 160 180

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nt [

Nm

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61

28

400

-4

Dummy artefactsDummy artefactsResults – Testing (dummy D078)Results – Testing (dummy D078)

• Positive neck force is mainly caused by the load applied via the upper torso jacket bolts incl. the interaction with the inner shoulder plates– Change of Nkm by 11% and of NIC by 2%

Baselinew/o upper torso jacket bolts

Upper neck Fx Upper Neck My

Head contact

EndEnd