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WorldSID Prototype Dummy Biomechanical Responses.

D Cesari1, S Compigne, R Scherer

  • 1WorldSID Tri-Chair Committee.

Stapp Car Crash Journal
|April 27, 2007
PubMed
Summary
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The WorldSID prototype dummy shows promise for side impact testing, achieving a "fair" biofidelity rating and excellent repeatability. This advanced dummy aims to exceed current standards in automotive safety evaluations.

Area of Science:

  • Biomedical Engineering
  • Automotive Safety
  • Crash Test Technology

Background:

  • The WorldSID (Worldwide Side Impact Dummy) is an advanced anthropometric test device representing a mid-sized adult male.
  • Existing side impact dummies have limitations in accurately replicating human responses during collisions.
  • The International Organization for Standardization (ISO) Technical Report 9790 defines response corridors for evaluating dummy biofidelity.

Purpose of the Study:

  • To present the biomechanical testing results of the first WorldSID prototype dummy.
  • To evaluate the biofidelity and repeatability of the WorldSID prototype against established ISO standards.
  • To assess the potential for a pre-production version to achieve "good" to "excellent" biofidelity ratings.

Main Methods:

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  • The WorldSID prototype underwent rigorous testing, including drop tests, pendulum impacts, and sled tests.
  • Biomechanical responses of the dummy's head, neck, thorax, abdomen, and pelvis were evaluated.
  • Biofidelity rating was calculated using the ISO weighted biomechanical test response procedure.

    • Main Results:

    • The WorldSID prototype achieved a biofidelity rating of 6.15, corresponding to an ISO biofidelity classification of "fair".
    • The dummy demonstrated good repeatability, with a global coefficient of variation of 3.30% in pendulum and rigid sled tests.
    • These results indicate a positive potential for the WorldSID dummy in side impact evaluations.

    Conclusions:

    • The WorldSID prototype exhibits promising biofidelity and excellent repeatability, meeting key evaluation criteria.
    • Further modifications are anticipated for the pre-production version to enhance its performance on the ISO biofidelity scale.
    • The WorldSID dummy has the potential to surpass the performance of current side impact dummies in automotive safety research.