In the EC FP6 Integrated Project APROSYS, the first WorldSID small female prototype was developed and evaluated by BASt, FTSS, INRETS, TRL and UPM-INSIA. Results were presented at the ESV 2007 conference (Been et al., 2007). A concern was raised that the current chest deflection measurement system, IR-Traccs, registered flat top responses and sometimes may not register the peak deflection. This was believed to be related to forward deformation of the ribs relative to the spine and associated extension of the IR-Traccs. In the mean time an update version of the dummy, called Revision1, was developed to address the issues found in the first evaluation round.
To improve oblique thorax loading sensitivity, a two-dimensional chest deflection sensor, the 2D IRTracc was developed. Measuring the angle between the spine box and the IR-Tracc enables the displacement of the most lateral point on the rib rib to be calculated in the XY (transverse) plane. To evaluate the new system, FTSS conducted single rib unit tests on a drop tower under pure lateral and oblique test conditions. The compression and rotation data were analysed to find the displacement of the most lateral part of the rib, and the rib deformation in the impact area. In addition, TRL subjected a complete Revision1 prototype dummy to oblique thorax pendulum tests and LAB conducted full dummy static deployment airbag tests under various impact angles and impact severities.
The 2D IR-Tracc proved to be very useful in understanding phenomena taking place under various lateral and oblique impact conditions that could not have been understood with the current (1D) compression sensor alone. The reduced sensitivity of the conventional IR-Tracc (Dy rib) to oblique impact was confirmed in this study. The calculated lateral displacement Y offered a simple and straightforward parameter to improve the sensitivity to oblique impacts, as compared to the current single axis deflection sensor.
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|2002||Maltese MR, Eppinger RH, Rhule HH, Donnelly BR, Pintar FA, Yoganandan N. Response corridors of human surrogates in lateral impacts. Stapp Car Crash J. 2002;46:321-351. SAE 2002-22-0017.|
|2007||Been B, Meijer R, Bermond F, Bortenschlager K, Hynd D, Martinez L, Ferichola G. WorldSID small female side impact dummy specifications and prototype evaluation. In: Proceedings of the 20th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 18-21, 2007; Lyon, France.|
|2007||Yoganandan N, Pintar FA, Gennarelli TA, Martin PG, Ridella SA. Chest injuries and injury mechanisms in oblique lateral impacts. In: Proceedings of the 2007 International IRCOBI Conference on the Biomechanics of Impact. September 19-21, 2007; Maastricht, The Netherlands.311-324.|
|2011||Sunnevång C, Subit D, Kindig M, Lessley D, Lamp J, Boström O, Kent R. Response of the worldwide side impact dummy (WorldSID) to localized constant-speed impacts. In: 55th Annual Proceedings, Association for the Advancement of Automotive Medicine (AAAM). October 3-5, 2011; Paris, France.231-241.|
|2013||Humm JR, Yoganandan N, Pintar FA, Rudd RW. Influence of pelvis flesh on abdomen deflections in the WorldSID in side impact sled tests. In: Proceedings of the 23rd International Technical Conference on the Enhanced Safety of Vehicles (ESV). May 27-30, 2013; Seoul, South Korea.|
|2017||Ikeda M, Mae H. Comparison of thorax responses between WorldSID-5th and SID-IIs in lateral and oblique impacts. In: Proceedings of the 25th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 5-8, 2017; Detroit, MI.|
|2014||Carroll J, Seidl M, Waagmeester K, Lemmen P, Burleigh M, Koschdon K, Lakshminarayana A, Schnottale B, Eggers A, Visvikis C. Side impact shoulder for the Q10 dummy: design and evaluation. In: Proceedings of the 2014 International IRCOBI Conference on the Biomechanics of Injury. September 10-12, 2014; Berlin, Germany.318-331.|
|2009||Petitjean A, Trosseille X, Petit P, Irwin A, Hassan J, Praxl N. Injury risk curves for the worldSID 50th male dummy. Stapp Car Crash J. 2009;53:443-476. SAE 2009-22-0016.|
|2010||Trosseille X, Petitjean A. Sensitivity of the WorldSID 50th and ES-2re thoraces to loading configuration. Stapp Car Crash J. 2010;54:259-287. SAE 2010-22-0013.|
|2012||Petitjean A, Trosseille X, Praxl N, Hynd D, Irwin A. Injury risk curves for the WorldSID 50th male dummy. Stapp Car Crash J. October 2012;56:323-347.|
|2013||Yoganandan N, Humm JR, Arun MWJ, Pintar FA. Oblique lateral impact biofidelity deflection corridors from post mortem human surrogates. Stapp Car Crash J. November 2013;57:427-440.|