Document ID: chunk:federal_register_of_legislation:F2012C00535:front:0:p40
Version: federal_register_of_legislation:F2012C00535
Segment Type: other
Provision Reference: 
Character Range: 110657–113788

The mass of the body section, expressed as a percentage of the unladen mass of the vehicle, shall be specified by the manufacturer.
7.1.4                                The energy to be absorbed by the body section, expressed as a percentage of the total energy which would be absorbed by a complete vehicle, shall be specified by the manufacturer.
7.1.5                                The percentage of total energy described in clause 7.1.4 shall not be less than the percentage of total mass described in clause 7.1.3.
7.1.6                                The test conditions specified in clause 6.1.6 and in clauses 8.2.1 to 8.2.6 shall apply.
7.2                                      TEST PROCEDURE
7.2.1                                The test procedures shall be the same as the procedure described in clause 6., except that the body section described above shall be used instead of a complete vehicle.
8.                                          PENDULUM TEST ON A BODY SECTION
8.1                                      ENERGY LEVEL AND DIRECTION OF IMPACT
8.1.1                                The energy to be transmitted to a particular body section shall be the sum of the energies declared by the manufacturer to be allocated to each of the cross-sectional rings included in that particular body section.
8.1.2                                The appropriate proportion of the energy prescribed in figure 3 and clause 8.1.3 shall be applied to the body section by the pendulum such that at the moment of impact the direction of motion of the pendulum makes an angle of 25o   (+0o; -5o) to the central longitudinal vertical plane of the body section. The precise angle within this range may be specified by the vehicle manufacturer.

Figure 3

         8.1.3                                CALCULATION OF TOTAL ENERGY (E*)

         If the fall of the centre of gravity (h) is determined by graphical method (figure 3) E* may be taken to be given by the formula:

         E* = 0.75 M.g.h. (Nm)

         Alternatively, E* may be calculated by the formula:

         where:
         M =  the unladen mass of the vehicle (kg)
         g =  9.8 m/s2
         W =  the overall width of the vehicle (m)
         Hs = the height of the centre of gravity of the unladen vehicle (m)
         H = the height of the vehicle (m)

8.2                                      TEST CONDITIONS
8.2.1                                A sufficient number of tests shall be carried out for the test facility conducting the test to be satisfied that the requirement specified in clause 2.1 has been met.
8.2.2                                For the purposes of the test body sections shall have sections of the normal structure fitted between the pillars in relation to the floor, underframe, sides and roof. Sections of such items as luggage racks, ventilation ducting, etc. where fitted, shall also be included.
8.2.3                                Every door and opening window of the body section shall be closed and latched but not locked. Windows and glazed bulkheads or screens may be glazed or unglazed at the applicant's discretion.