WorldSID Advanced Harmonised Dummy for Side Impact

1. WorldSIDAdvanced Harmonised Dummyfor Side Impact Martin Page C.E.E.S.A.R. (representing LAB) On behalf of the WorldSID Task Group Presentation to the GRSP December 2001

2. 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 Presentation to the GRSP December 2001

3. Project Organisation ISO TC22 / SC12 / WG5 Working Group - Anthropomorphic Test Devices IHRA WorldSID Task Group Co-ordination World-wide governments Project Manager Design Team European Advisory Group Americas Advisory Group Asia-Pacific Advisory Group Presentation to the GRSP December 2001

4. 1998 1999 2000 2001 2002 2003 2004 Set up programme and develop specifications Pre-production dummy evaluation Final specifications Prototype evaluation Release into public domain Prototype development Production dummy development Pre-production dummy development Project Timeline Presentation to the GRSP December 2001

5. 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 Milestones Presentation to the GRSP December 2001

6. 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 … Milestones (cont’d) Presentation to the GRSP December 2001

7. Next Steps • Re-testing of modified prototype • Development of pre-production dummy • Sale of approx. 9 pre-prod’n dummies to finance development • Comprehensive evaluation of pre-prod’n dummies around the world • Final development • Release of final design into public domain Presentation to the GRSP December 2001

8. Description of Dummy advanced design Presentation to the GRSP December 2001

9. 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 Presentation to the GRSP December 2001

10. Head • One-piece polymer skull • Seamless skin • Frontal & lateral biofidelity Instrumentation core Neck shroud Presentation to the GRSP December 2001

11. Outer rib 75mm deflection IR-TRACC rear Inner rib Thorax, Shoulder, Abdomen Presentation to the GRSP December 2001

12. New concept for de-coupling of pelvis and thorax Load cell Lumbar Spine Presentation to the GRSP December 2001

13. Pelvis no hidden load paths rear Sacro-iliac load cells lumbar load cell Femur neck load cells pubic load cell Presentation to the GRSP December 2001

14. Lower Extremities • Femoral neck load cell • DAS module box • Knee rotation sensor • Knee contact load cells • Leg load cell • Fully instrumented • Specific design Presentation to the GRSP December 2001

15. 3-axis Shoulder LC • 6-axis Universal Arm LC • 2-axis Elbow LC (Mx,My) • Triaxial Accelerometer • Elbow Angular Sensor Upper Extremity Half arm Instrumented arm Presentation to the GRSP December 2001

16. 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. Presentation to the GRSP December 2001

17. 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. Presentation to the GRSP December 2001

18. 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< 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 Presentation to the GRSP December 2001

19. Summary – Prototype Biofidelity Evaluation Bendjellal et al, ESV 13 • Excellent Biofidelity: 8,6£ B< 10,0 • Good Biofidelity: 6,5£ B< 8,6 • Fair Biofidelity: 4,4£ B< 6,5 Presentation to the GRSP December 2001

20. 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 Presentation to the GRSP December 2001

21. Repeatability • Biofidelity evaluation indicates good repeatablity Durability • Over 100 biofidelity tests + 2 full scale tests - • only minor damage Presentation to the GRSP December 2001

22. 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 Presentation to the GRSP December 2001