WorldSID Advanced Harmonised Dummy for Side Impact

Presentation to the GRSP December 2001

WorldSIDWorldSIDAdvanced Harmonised DummyAdvanced Harmonised Dummy

for Side Impactfor Side Impact

Martin Page C.E.E.S.A.R. (representing LAB)Martin Page C.E.E.S.A.R. (representing LAB)On behalf of the WorldSID Task GroupOn behalf of the WorldSID Task Group


Background: The WorldSID Background: The WorldSID ProjectProject

• Project under auspices of ISO TC22/SC12/WG5Project under auspices of ISO TC22/SC12/WG5• Goal to replace all existing adult side impact Goal to replace all existing adult side impact

dummies with a single, highly biofidelic model dummies with a single, highly biofidelic model acceptable to all usersacceptable to all users

• Government, industry & researchers working Government, industry & researchers working togethertogether

• Large choice of instrumentationLarge choice of instrumentation


Project OrganisationProject Organisation

WorldSID Task Group

ISO TC22 / SC12 / WG5 Working Group -

Anthropomorphic Test Devices

IHRA

Project

Manager

DesignTeam

European

Advisory Group Asia-Pacific

Advisory Group Americas

Advisory Group

World-widegovernments

Co-ordination


Project TimelineProject Timeline

1998 2000 2001 2002 2003 20041999

Set up programme anddevelop specifications

Prototypedevelopment

Prototypeevaluation

Pre-productiondummydevelopment

Pre-productiondummyevaluation

Productiondummydevelopment

Finalspecifications

Releaseintopublicdomain


MilestonesMilestones

• June1997 ISO/TC22/SC12/WG5 resolutionJune1997 ISO/TC22/SC12/WG5 resolutionfollowed by creation of Task Group & followed by creation of Task Group &

regional groupsregional groups

• Oct.1998Oct.1998 Project Manager contractedProject Manager contracted• Jan.1999Jan.1999 Request for Quote for dummy Request for Quote for dummy

designdesign• Mar.1999Mar.1999 presentation of conceptspresentation of concepts

then creation of Design Teamthen creation of Design Team

• Sep.1999Sep.1999 completion of design completion of design specificationspecification

• June2000June2000 sign off of dummy designsign off of dummy design

• June1997 ISO/TC22/SC12/WG5 resolutionJune1997 ISO/TC22/SC12/WG5 resolutionfollowed by creation of Task Group & followed by creation of Task Group &

regional groupsregional groups

• Oct.1998Oct.1998 Project Manager contractedProject Manager contracted• Jan.1999Jan.1999 Request for Quote for dummy Request for Quote for dummy

designdesign• Mar.1999Mar.1999 presentation of conceptspresentation of concepts

then creation of Design Teamthen creation of Design Team

• Sep.1999Sep.1999 completion of design completion of design specificationspecification

• June2000June2000 sign off of dummy designsign off of dummy design


Milestones (cont’d)Milestones (cont’d)

• Sep.2000Sep.2000 assembly of prototypeassembly of prototype• Dec.2000Dec.2000 delivery of prototypedelivery of prototype• Dec.2000Dec.2000 first crash tests and WorldSID first crash tests and WorldSID

WorkshopWorkshop• Jan.2001Jan.2001 evaluation of prototype evaluation of prototype

biofidelitybiofidelity• Jun.2001Jun.2001 identification of initial identification of initial

modificationsmodificationsfollowed by application of modificationsfollowed by application of modifications

……


Next StepsNext Steps

• Re-testing of modified prototypeRe-testing of modified prototype• Development of pre-production dummyDevelopment of pre-production dummy• Sale of approx. 9 pre-prod’n dummies to Sale of approx. 9 pre-prod’n dummies to

finance developmentfinance development• Comprehensive evaluation of pre-prod’n Comprehensive evaluation of pre-prod’n

dummies around the worlddummies around the world• Final developmentFinal development• Release of final design into public domainRelease of final design into public domain


Description of DummyDescription of Dummy

advanced designadvanced design


AnthropometryAnthropometry•50th percentile male50th percentile male

overall height:overall height: 1753 mm1753 mmseated height:seated height: 911 mm911 mmtotal mass: total mass: 77,3 kg77,3 kg

•Complies with UMTRI anthropometryComplies with UMTRI anthropometrydata for adult crash test dummiesdata for adult crash test dummies

BiofidelityBiofidelity•Goal: ‘Good’ to ‘Excellent’ on ISO TR9790 scaleGoal: ‘Good’ to ‘Excellent’ on ISO TR9790 scale

AnthropometryAnthropometry•50th percentile male50th percentile male

overall height:overall height: 1753 mm1753 mmseated height:seated height: 911 mm911 mmtotal mass: total mass: 77,3 kg77,3 kg

•Complies with UMTRI anthropometryComplies with UMTRI anthropometrydata for adult crash test dummiesdata for adult crash test dummies

BiofidelityBiofidelity•Goal: ‘Good’ to ‘Excellent’ on ISO TR9790 scaleGoal: ‘Good’ to ‘Excellent’ on ISO TR9790 scale


HeadHead

Neck shroud Neck shroud

• One-piece polymer skull• Seamless skin• Frontal & lateral biofidelity

• One-piece polymer skull• Seamless skin• Frontal & lateral biofidelity

Instrumentationcore


Thorax, Shoulder, AbdomenThorax, Shoulder, Abdomen

IR-TRACCIR-TRACC

rearrear

Outer ribOuter rib

Inner ribInner rib

75mmdeflection75mmdeflection


Lumbar SpineLumbar Spine

• New concept for de-coupling of pelvis and thorax• New concept for de-coupling of pelvis and thorax

Load cellLoad cell


PelvisPelvis

rear

Sacro-iliac Sacro-iliac load cellsload cells

lumbar lumbar load cellload cell

Femur neck Femur neck load cellsload cells

pubic pubic load cellload cell

no hiddenno hiddenload pathsload paths


Lower ExtremitiesLower Extremities•Fully instrumentedFully instrumented

•Specific designSpecific design

• Femoral neck load cellFemoral neck load cell• DAS module boxDAS module box

• Knee rotation sensorKnee rotation sensor

• Knee contact load cellsKnee contact load cells

• Leg load cellLeg load cell


Upper ExtremityUpper Extremity

Half armHalf arm

InstrumentedInstrumentedarmarm

• 3-axis Shoulder LC3-axis Shoulder LC

• 6-axis 6-axis UniversalUniversal Arm LCArm LC• 2-axis Elbow LC 2-axis Elbow LC (Mx,My)(Mx,My)• Triaxial Triaxial AccelerometerAccelerometer• Elbow Angular Elbow Angular SensorSensor


Optional In-DummyOptional In-DummyData AcquisitionData Acquisition

• 7 DAS modules in dummy

• 0ver 200 channels available

• Signalconditioningmoved to the sensor.

• Distributed, modulardata acquisition.

• Drastically reduced wirebundles inside dummy.

• Umbilical from dummy is

for power, com, and trigger.


BiofidelityBiofidelity

• Evaluation of prototypeEvaluation of prototype• All ISO TR 9790 tests performedAll ISO TR 9790 tests performed• Testing by Transport Canada & Medical Testing by Transport Canada & Medical

College Wisconsin (sponsored NHTSA)College Wisconsin (sponsored NHTSA)• Tests on right and left sideTests on right and left side• 3 tests per side3 tests per side• Reported at 2001 Stapp Conference:Reported at 2001 Stapp Conference: WorldSID prototype Dummy Biomechanical ResponsesWorldSID prototype Dummy Biomechanical Responses, Cesari et al., Cesari et al.


ISO Rating ISO Rating (from TR 9790)(from TR 9790)

• Response completely inside corridor B = 10• Response within one corridor width outside corridor B = 5• Response more than one corridor width outside corridor B = 0• Mean score for each body segment• After weighting body segments, mean of body segments =

overall B

• Excellent Biofidelity: 8,6 B 10,0• Good Biofidelity: 6,5 B 8,6• Fair Biofidelity: 4,4 B 6,5• Marginal Biofidelity: 2,6 B 4,4• Unacceptable Biofidelity: 0,0 B 2,6

• Response completely inside corridor B = 10• Response within one corridor width outside corridor B = 5• Response more than one corridor width outside corridor B = 0• Mean score for each body segment• After weighting body segments, mean of body segments =

overall B

• Excellent Biofidelity: 8,6 B 10,0• Good Biofidelity: 6,5 B 8,6• Fair Biofidelity: 4,4 B 6,5• Marginal Biofidelity: 2,6 B 4,4• Unacceptable Biofidelity: 0,0 B 2,6


Summary – Prototype Biofidelity EvaluationSummary – Prototype Biofidelity EvaluationSegment Score Rating

Head 10 Excellent

(Head – frontal)

(5) (Fair)

Neck 3,61 Marginal

Shoulder 5,2 Fair

Thorax 6,77 Good

Abdomen 6,33 Fair

Pelvis 4,21 Marginal

Full dummy 6,13 Fair

•Excellent Biofidelity: 8,6 B 10,0

•Good Biofidelity: 6,5 B 8,6

•Fair Biofidelity: 4,4 B 6,5

ScoreEurosid

ScoreBiosid

3.3 3.3

5 4.6

4.3 5.7

5.9 4.1

4.2 5

3.5 5.5

4.44 4.64

Bendjellal et al, ESV 13Bendjellal et al, ESV 13


Summary of ResultsSummary of Results

• Head: good lateral biofidelity – frontal response is second priority but only minor modification to meet objective

• Neck: - difficult to meet both lateral and frontal responserequirements - Response influenced by shoulder– More work to be done

• Shoulder: to be stiffened – should easily meet objective• Thorax: meets objective• Abdomen: objective should be met after modification• Pelvis: appears to be too stiff

- Check bone/flesh mass distribution- Design may be incompatible with TR 9790 sled tests with

padding

• Head: good lateral biofidelity – frontal response is second priority but only minor modification to meet objective

• Neck: - difficult to meet both lateral and frontal responserequirements - Response influenced by shoulder– More work to be done

• Shoulder: to be stiffened – should easily meet objective• Thorax: meets objective• Abdomen: objective should be met after modification• Pelvis: appears to be too stiff

- Check bone/flesh mass distribution- Design may be incompatible with TR 9790 sled tests with

padding


RepeatabilityRepeatability

• Biofidelity evaluation indicates good Biofidelity evaluation indicates good repeatablityrepeatablity

DurabilityDurability

• Over 100 biofidelity tests + 2 full scale tests - Over 100 biofidelity tests + 2 full scale tests -

only minor damageonly minor damage


SummarySummary

• The performance of the WorldSID prototype The performance of the WorldSID prototype dummy has been very promisingdummy has been very promising

• Development work is continuingDevelopment work is continuing

• Final dummy release into public domain and Final dummy release into public domain and launch of production dummy expected on launch of production dummy expected on schedule in 2004schedule in 2004

Documents

WorldSID Advanced Harmonised Dummy for Side Impact