Document ID: chunk:federal_register_of_legislation:F2012C00357:front:0:p35
Version: federal_register_of_legislation:F2012C00357
Segment Type: other
Provision Reference: 
Character Range: 92963–95618

the buckle is connected to a rigid part, the load shall be applied at the same angle as the one formed by the buckle and the rigid end during the dynamic test.  A load shall be applied at a speed of 400  20 mm/min to the geometric centre of the buckle‑release button along a fixed axis running parallel to the initial direction of motion of the button.  During the application of the force needed to open the buckle, the buckle shall be held by a rigid support.  The load quoted above shall not exceed the limit indicated in paragraph 6.2.2.5. above.  The point of contact of the test equipment shall be spherical in form with a radius of 2.5 mm + 0.1 mm.  It shall have a polished metal surface.

           7.8.3. The buckle‑opening force shall be measured and any failure of the buckle noted.

           7.8.4. After the buckle‑opening test, the components of the belt assembly or of the restraint device which have undergone the tests prescribed in paragraph 7.7. above shall be inspected and the extent of the damage sustained by the belt assembly or restraint device during the dynamic test shall be recorded in the test report.

           7.9. Additional tests on safety‑belts with pre‑loading devices

           7.9.1. Conditioning

           The pre‑loading device may be separated from the safety‑belt to be tested and kept for 24 hours at a temperature of 60° + 5 °C.  The temperature shall then be raised to 100° + 5 °C for two hours.  Subsequently it shall be kept for 24 hours at a temperature of ‑30° + 5 °C.  After being removed from conditioning, the device shall warm up to ambient temperature.  If it has been separated it shall be fitted again to the safety‑belt.

           7.10. Test report

           7.10.1. The test report shall record the results of all the tests in paragraph 7 above and in particular the trolley speed, the maximum forward displacement of the manikin, the place ‑ if it can be varied ‑ occupied by the buckle during the test, the buckle‑opening force, and any failure or breakage.  If by virtue of paragraph 7.7.1. the anchorages prescribed in Annex 6 to this Regulation have not been respected, the test report shall describe how the belt assembly or the restraint system was installed and shall specify important angles and dimensions.  The report shall also mention any distortion or breakage of the buckle that has occurred during the test.  In the case of a restraint system the test report shall also specify the manner of attaching the vehicle structure to the trolley, the position of the seats, and the inclination of the seat backs.  If the forward displacement of the manikin has exceeded the