Presentation by Mr Bon-Hwan Koo on behalf of Mr Jongsoo Kim (GTR7-07-08):

The results of seat tests at 16 and 20 km/h, using KNCAP protocol, performed in 2009-2010 were presented. The 20 km/h pulse had the peak scaled up, but had the same duration as the 16 km/h pulse.

It was reported that the CV for head and T1 accelerations was <7; there was a high CV for upper neck Fx, lower Fz and upper neck My at 20 km/h, and for lower neck My at both pulses. Other outputs had a CV <10. Upper neck Fz and lower neck Fx were acceptable as were the kinematics.

The study concluded that, in general, the CV was larger at 16 km/h than at 20 km/h, and that head rotation angle, T1 x and Head x accelerations seem appropriate for a GTR. It was reported that other seat models will be tested. Tests will be run with Hybrid III to try and correlate the Hybrid III 12 degree criterion with BioRID measurements.

The data from this study are available for the informal group.

It was noted that the tests were performed in 2009-2010, and it was asked whether the dummy has been checked against the latest checklists to determine whether the dummy was up the current specification. Mr Koo indicated that Mr Kim would be able to advise on this point.

Action all to email questions to Mr Kim at KATRI:
· The neck shear forces were negative, as per the NHTSA tests with a high seat back rotation angle, whereas they were positive in the PDB tests. What was the seat recline angle in the tests?
· Was the repeatability of T1 angle assessed when setting up the dummy?
· A description of the seat back contour would be useful, similar to that in the PDB presentation.