Document ID: chunk:federal_register_of_legislation:F2005L03992:body:0:p19
Version: federal_register_of_legislation:F2005L03992
Segment Type: other
Provision Reference: 
Character Range: 48772–51374

zone shall be 1,500 ± 10 mm wide and 500 ± 5 mm high.
    2.1.3. The ground clearance of the collision zone shall be 300mm ± 5 mm measured in static condition before impact.
    2.1.4. There shall be six deformable elements, divided into two rows of three elements.  All the elements shall have the same width (500 ± 5 mm) and the same height (250 ± 3 mm);  the elements of the upper row shall be 440 ± 5 mm deep and those of the lower row 500 ± 5 mm deep.
    2.2. Material characteristics
     The material of the impactor must be an aluminium honeycomb.  Other materials can be used if equal results as described in paragraph 2.3. have been proved to the satisfaction of the Technical Service.  In any case the type of impactor must be indicated in the test report.
    2.3. Deformation characteristics
    2.3.1. Deviation from the limits of the force-deflection corridors characterising the rigidity of the impactor - as defined in this annex, figure 2 - may be allowed provided that:
    2.3.1.1. the deviation occurs after the beginning of the impact and before the deformation of the impactor is equal to 150 mm;
    2.3.1.2. the deviation does not exceed 50 per cent of the nearest instantaneous prescribed limit of the corridor;
    2.3.1.3. each displacement corresponding to each deviation does not exceed 35 mm of the deflection, and the sum of these displacements does not exceed 70 mm (see figure 2) and
    2.3.1.4. the sum of the energy derived from deviating outside the corridor does not exceed 5 per cent of the gross energy for that block.
    2.3.2. Parts 1 and 3 are identical.  Their rigidity is such that their force-deflection curves fall within the hatched area of figure 2, graph 2a.
    2.3.3. Parts 5 and 6 are identical.  Their rigidity is such that their force-deflection curves fall within the hatched area of figure 2, graph 2d.
    2.3.4. The rigidity of part 2 is such that its force-deflection curve falls within the hatched area of figure 2, graph 2b.
    2.3.5. The rigidity of part 4 is such that its force-deflection curve falls within the hatched area of figure 2, graph 2c.
    2.3.6. The force-deflection of the impactor as a whole shall fall within the hatched area of figure 2, graph 2e.
    2.3.7. The force-deflection curves shall be verified by a test detailed in annex 5 - appendix, consisting of an impact of the assembly against a dynamometric barrier at 35  2 km/h.
    2.3.8. The dissipated energy [1/ ] against parts 1 and 3 during the test shall be equal to 10  2 kJ for each of these parts.
    2.3.9. The dissipated energy against parts 5 and