WorldSID Advanced Harmonised Dummy for Side Impact

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WorldSIDAdvanced Harmonised Dummyfor Side Impact
Martin Page C.E.E.S.A.R. (representing LAB) On
behalf of the WorldSID Task Group
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Background The WorldSID Project

• Project under auspices of ISO TC22/SC12/WG5
• Goal to replace all existing adult side impact
  dummies with a single, highly biofidelic model
  acceptable to all users
• Government, industry researchers working
  together
• Large choice of instrumentation

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Project Organisation
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Project Timeline
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Milestones

• June1997 ISO/TC22/SC12/WG5 resolution followed
  by creation of Task Group regional groups
• Oct.1998 Project Manager contracted
• Jan.1999 Request for Quote for dummy design
• Mar.1999 presentation of concepts
• then creation of Design Team
• Sep.1999 completion of design specification
• June2000 sign off of dummy design

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Milestones (contd)

• Sep.2000 assembly of prototype
• Dec.2000 delivery of prototype
• Dec.2000 first crash tests and WorldSID Workshop
• Jan.2001 evaluation of prototype biofidelity
• Jun.2001 identification of initial modifications
• followed by application of modifications

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Next Steps

• Re-testing of modified prototype
• Development of pre-production dummy
• Sale of approx. 9 pre-prodn dummies to finance
  development
• Comprehensive evaluation of pre-prodn dummies
  around the world
• Final development
• Release of final design into public domain

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Description of Dummy
advanced design
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• Anthropometry
• 50th percentile male
• overall height 1753 mm
• seated height 911 mm
• total mass 77,3 kg
• Complies with UMTRI anthropometry
• data for adult crash test dummies
• Biofidelity
• Goal Good to Excellent on ISO TR9790 scale

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(No Transcript)
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Thorax, Shoulder, Abdomen
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Lumbar Spine

• New concept for de-coupling of pelvis and thorax

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Pelvis
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Lower Extremities

• Fully instrumented
• Specific design

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Upper Extremity
Half arm
Instrumented arm
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Optional In-Dummy Data Acquisition

• 7 DAS modules in dummy
• 0ver 200 channels available
• Signal
• conditioning
• moved to the sensor.
• Distributed, modular
• data acquisition.
• Drastically reduced wire
• bundles inside dummy.
• Umbilical from dummy is for power, com, and
  trigger.

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Biofidelity

• Evaluation of prototype
• All ISO TR 9790 tests performed
• Testing by Transport Canada Medical College
  Wisconsin (sponsored NHTSA)
• Tests on right and left side
• 3 tests per side
• Reported at 2001 Stapp Conference
• WorldSID prototype Dummy Biomechanical
  Responses, Cesari et al.

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ISO Rating (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 lt 10,0
• Good Biofidelity 6,5 B lt 8,6
• Fair Biofidelity 4,4 B lt 6,5
• Marginal Biofidelity 2,6 B lt 4,4
• Unacceptable Biofidelity 0,0 B lt 2,6

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Summary Prototype Biofidelity Evaluation
Segment 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
Score Eurosid Score Biosid
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 13

• Excellent Biofidelity 8,6 B lt 10,0
• Good Biofidelity 6,5 B lt 8,6
• Fair Biofidelity 4,4 B lt 6,5

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Summary 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 response
• requirements
• - 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

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Repeatability

• Biofidelity evaluation indicates good repeatablity

Durability

• Over 100 biofidelity tests 2 full scale tests -
  
• only minor damage

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Summary

• The performance of the WorldSID prototype dummy
  has been very promising
• Development work is continuing
• Final dummy release into public domain and launch
  of production dummy expected on schedule in 2004