Presentation from Asada-san, Japan (GTR7-06-06):

New study with three BioRID IIg dummies, compared with previous study with two dummies. New sled (no-HR test) had a smoother sled response visually. A comparison of sled pulse and dummy measurements with the old and new sleds was presented. The oldest of the three dummies (with new jacket) used with the new sled showed some differences compared to the two newer dummies. In the future seat tests will be undertaken to determine whether this gives a difference in seat tests.

The new no-HR certification test was compared with seat tests to compare the kinematics. The shape of the neck was reported to be different at time of peak pot values, with the neck much straighter in seat tests, largely due to the head restraint limiting rearward motion of the head. Therefore, use of the head restraint certification tests was recommended.

It is not known what caused the difference between dummy 095 and dummies 102 and 115. Dummies 095 and 102 are JARI dummies that have both been used in many seat tests; dummy 115 is brand new and has therefore not been used for seat testing. The two older dummies had previously been maintained using the old sled test. It was noted that only dummy 115 is definitely fully compliant with the design and maintenance checklists, but 095 and 102 should be compliant with the significant amendments. Action Asada-san to check dummies 095 and 102 against the design and maintenance checklists.