Ms Tylko presented an ISO WorldSID 50th Task Group update (PSI-06-08).

Ms Tylko explained that material changes are required for a number of dummies, not just WorldSID. A replacement for the Ureol used for the WorldSID 50th head skull and pelvis iliac wings has been identified and is in production at Humanetics ATD. A suitable replacement has not yet been identified for the Hyperlast foam used in the pelvis flesh. All dummy families will require vinyl flesh changes in the next 2-4 years. It is the expectation of the ISO group that a suitable replacement material should not significantly change the dummy performance and the ISO task group will be coordinating a limited number of biofidelity tests to confirm this for each replacement material.

Ms Tylko explained that the upper front edge of the WorldSID 50th and 5th pelvis flesh can sometimes interfere with the lower abdominal rib when the dummy is in an upright seating position/posture. Several organisations have run pendulum and sled tests with and without WorldSID 50th pelvis flesh interference to investigate the influence interference could have on the magnitude and repeatability of the lower abdominal rib deflection responses. The no interference condition was created by cutting away some of the WorldSID 50th pelvis flesh. Results showed that this made less than 2-3mm difference to the deflections and there was no increase in repeatability for the modified cut away pelvis. The ISO task group is therefore recommending the WorldSID 50th pelvis not be changed.

Ms Tylko advised that pelvis tests on newer dummies typically produce results close to the edge of the corridor. The corridor will be modified so that the population of dummies produce results close to the middle of the corridor. It is not unusual to modify corridors to suit the dummy population. The current version of the dummy is build level E. Build level F will be available soon and will include the updated pelvis iliac/skull material. However, build level F will not include 2D-IRTRACC or a replacement material for Hyperlast foam. The current 2D-IRTRACC design has had some durability and data quality issues. A new 2D-IRTRACC exists, but needs to undergo durability testing first and will therefore not be included in build level F.

Mr Jensen advised that the ISO Task Group was not intending to develop a single rib certification test. Single rib certification tests have been investigated previously for other dummies, but can be problematic and would not necessarily make the dummy better. Data will be collected and used to narrow the WorldSID 50th pelvis certification corridors.

Ms Tylko explained that the ISO seating procedure for the WorldSID 50th male dummy is likely to take at least 12 months to progress through the ISO ballot process. It may be possible for the draft document to be circulated to members of the pole side impact GTR informal group.

Ms Versailles was concerned about referencing a standard that needs to be purchased in the GTR. Ms Versailles explained that NHTSA must put documents referenced in FMVSS standards on file at the federal register and that these are accessible under freedom of information.