ISO TC22/SC12/WG5 set up a Task Group to develop an advanced, biofidelic, globally acceptable side impact dummy known as WorldSID. The WorldSID TG has developed the dummy to meet the biofidelity requirements in ISO TR 9790. The European Commission (EC) project SID-2000 contributed to the design of the WorldSID head, neck, thorax and pelvis. The follow-on EC project, SIBER, has evaluated the repeatability, reproducibility, sensitivity and biofidelity of the WorldSID prototype and pre-production dummy (PPD). This paper presents the results of the SIBER evaluation of the shoulder, thorax and abdomen of the WorldSID PPD, including temperature sensitivity, biofidelity and impact configuration sensitivity tests. The WorldSID PPD was found to be sensitive to temperature at the thorax and, particularly, the shoulder. It was also found that the dummy generated a noticeable amount of heat internally, from the thorax instrumentation and internal data acquisition system. It is recommended that both the ambient and internal temperature are specified for full-scale testing. The thorax met or was close to meeting the IHRA biofidelity requirements, but exceeded the ISO requirements in the same test condition. The abdomen was found to be too stiff and it is recommended that the stiffness of the WorldSID abdomen ribs is reduced. Earlier test work with the WorldSID prototype had indicated that the rib compression instrumentation was not capable of measuring correctly rib compression in oblique loading conditions. This was confirmed by the results of HyGe sled testing, which examined lateral and oblique impacts in a representative vehicle environment with additional thorax rib instrumentation. Additional tests with an isolated WorldSID rib are also presented. These showed that the measured rib compression markedly underestimates the actual compression in oblique loading conditions. It is recommended that the WorldSID thoracic compression instrumentation is revised to ensure the correct measurement of rib compression in oblique loading conditions up to plus or minus 30 degrees from lateral.

Want to know more about this project?