Document ID: chunk:federal_register_of_legislation:F2024L01742:body:0:p12
Version: federal_register_of_legislation:F2024L01742
Segment Type: other
Provision Reference: 
Character Range: 35781–39394

acceleration, expressed in m/s2.

     2.                               The criterion is measured according to clause 7.6.2 and by the acceleration period, expressed in ms.

 2.                                     Femur Injury Criterion (FIC)

     1.                               This criterion is determined by the compression force, expressed in kN, transmitted axially on each femur of the 'Hybrid III'.

     2.                               The criterion is measured according to clause 7.6.3 and by the duration of the compression force, expressed in ms.

 3.                                     Sternum Injury Criterion (SIC)

     1.                               This criterion is determined by the compression deflection of the sternum relative to the spine.

     2.                               The criterion is measured in accordance with clause 7.6.4, expressed in mm.

 1.                                       SEAT BACK AND SEAT RESTRAINING DEVICE STRENGTH

     1.                                 Requirements

         1.                           A 530 Nm moment about the 'Seating Reference Point' for each occupant position for which the 'Seat' is designed must be applied to the upper cross member in a 'Rearward' longitudinal direction, unless it is demonstrated that 'Seat' assemblies such as rear 'Seat' backs are supported by a vehicle body member capable of withstanding the nominated force.

     2.                                 Testing

         1.                           Testing to ensure 'Seat' backs meet the 530 Nm requirement must be undertaken by:

             1.                     a force applied horizontally; or

             2.                     a force applied normal to the 'Seat' back; or

             3.                     a force applied longitudinally and 'Rearward' to the upper part of the 'Seat' back frame through a component simulating the back of a 'Manikin'.

         2.                           If deflection of the 'Seat' back causes the moment arm to change, the force should be adjusted to ensure that the moment value of 530 Nm is achieved.

         3.                           Except as provided in clause 10.2.4, hinged 'Seats' or 'Seat' backs must be equipped with a self-locking device for restraining the hinged 'Seat' or 'Seat' back and a release control for releasing that restraining device to preclude the possibility of impact forces acting on unrestrained hinged 'Seats' or 'Seat' backs.

         4.                           The requirements set out in clause 10.2.3 do not apply to a 'Seat' having a back that is adjustable only for the comfort of its occupants.

         5.                           If non-self-locking auxiliary latches are provided they must be unlatched during all testing so that only the restraining device and hinges are taking the test forces.

         6.                           Where 'Seats' are mounted on hinged covers, e.g. engine covers, and the 'Seat' assembly can withstand the test forces without tilting of the hinged cover and without any latches being latched, then the latches need not be self-locking.

 2.                                       ANCHORAGES AND SASH GUIDES

     1.                                 Provision and Location

         1.                           A 'Sash Guide' must be provided for each seating position to be fitted with a 'Lap-Sash Belt'.

         2.                           The location of seatbelt 'Anchorages' must be such that the locations of their appropriate 'Anchor Points' and 'Sash Guides' meet the requirements