Document ID: chunk:federal_register_of_legislation:F2021C00450:body:0:p5
Version: federal_register_of_legislation:F2021C00450
Segment Type: other
Provision Reference: 
Character Range: 14378–17521

specified in clause 6.2.1, the testing of 'Seats' must meet the test requirements specified in clause 6.1 of this rule.
6.3.                                    Dynamic Test Conditions
6.3.1.                              Dynamic testing must be conducted at the vehicle 'Manufacturer's' choice either to clause 6.3.2 or 6.3.3.
6.3.2.                              Dynamic testing may be carried out in accordance with the dynamic test procedure of EEC Directive 74/408/EEC- "Strength of Seats and their Anchorages"  for front-facing 'Seats' which are not 'Folding Seats' and which do not incorporate any built-in seatbelt 'Anchorages'.
6.3.3.                              Alternatively, the following criteria must be met:
6.3.3.1.                        The acceleration pulse applied must be such that all the parts of the 'Seat' and supporting structure which anchors it to the vehicle have at least an acceleration of 20 times the acceleration due to gravity simultaneously in the same direction; and
6.3.3.1.1.                  any additional forces due to the loading of seatbelt 'Anchorages' or 'Child Restraint Anchorages' must be achieved simultaneously with the acceleration required in clause 6.3.3.1 above.
6.4.                                    Energy Dissipation Test
6.4.1.                              The 'Seat' must be firmly secured to the test bench, using the attachment parts provided by the 'Manufacturer' and in the same manner in which it is intended to be mounted in the vehicle with the 'Seat' back in the 'Manufacturer's' design position.
6.4.2.                              The dynamic testing equipment must consist of a rigid moving head having an effective mass of 6.8 + 0.1 kg. The portion of the moving head which contacts the 'Seat' back must be of spherical shape with a diameter of 165 mm.  The direction of impact from the rear towards the front must be situated in a vertical longitudinal plane and lie along a line at 45o downwards relative to the normal level vehicle attitude.
6.4.3.                              The moving head must impact the 'Seat' back at a velocity of not less than 6.69 m/s.
6.4.4.                              A transducer must be mounted on the moving head such that a complete deceleration time curve is obtained using an oscilloscope or other recording device.  The deceleration channel must have a frequency response flat to within + 5 per cent from one to 1000 Hz.
6.5.                                    Contactable Areas
6.5.1.                              Area 1
         In the case of separate 'Seats' without 'Head Restraints', this area shall include the rear part of the 'Seat' back between the longitudinal vertical planes situated at 100 mm on either side of the 'Seating Reference Plane' and above a plane perpendicular to the 'Torso Reference Line' 100 mm below the top of the 'Seat' back.

         In the case of bench 'Seats' without 'Head Restraints', this area shall extend between the longitudinal vertical planes situated at 100 mm on either side of the 'Seating Reference Plane' of each designated outboard seating position defined by the 'Manufacturer'