Document ID: chunk:federal_register_of_legislation:F2015C00542:reg:52:p1
Version: federal_register_of_legislation:F2015C00542
Segment Type: reg
Provision Reference: reg 52 (pt 1/6)
Character Range: 82446–85263

52  01 1628

 The above approval mark affixed to a vehicle shows that the vehicle type concerned has been approved in the Netherlands (E4) pursuant to Regulations Nos. 43 and 52. The approval numbers indicate that, at the date when the respective approvals were given, Regulation No. 43 included the 01 series of amendments and Regulation No. 52 included the 01 series of amendments.

Annex 3

  General test conditions

              1. Fragmentation Test

              1.1. The glass pane to be tested shall not be rigidly secured; it may however be fastened on an identical glass pane by means of adhesive tape applied all round the edge.

              1.2. To obtain fragmentation, a hammer of about 75 g or some other appliance giving equivalent results shall be used. The radius of curvature of the point shall be 0.2 ± 0.05 mm.

              1.3. One test shall be carried out at each prescribed point of impact.

              1.4. The examination of the fragments shall be made using any method validated on its accuracy of the counting itself and on its ability to find the correct location where the minimum and the maximum counting shall be done.

               Permanent recording of the fragmentation pattern shall start within 10 seconds and shall end within 3 minutes after the impact. The technical service shall keep the permanent recordings of the fragmentation pattern.

              2. Ball-Impact Tests

              2.1. 227 g ball test

              2.1.1. Apparatus

              2.1.1.1. Hardened-steel ball with a mass of 227 g ± 2 g and a diameter of approximately 38 mm.

              2.1.1.2. Means for dropping the ball freely from a height to be specified, or a means for giving the ball a velocity equivalent to that obtained by the free fall. When a device to project the ball is used, the tolerance on velocity shall be ±1 per cent of the velocity equivalent to that obtained by the free fall.

              2.1.1.3. Supporting fixture, such as that shown in Figure 1, composed of steel frames, with machined borders 15 mm wide, fitting one over the other and faced with rubber gaskets about 3 mm thick and 15 mm wide and of hardness 50 IRHD.

               The lower frame rests on a steel box about 150 mm high. The test piece is held in place by the upper frame, the mass of which is about 3 kg. The supporting frame is welded onto a sheet of steel of about 12 mm thick resting on the floor with an interposed sheet of rubber about 3 mm thick and of hardness 50 IRHD.

Figure 1
       Support for ball tests

              2.1.2. Test conditions

               Temperature:   20 °C ± 5 °C

               Pressure:  860 to 1,060 mbar

               Relative humidity:  60 ± 20 per cent

              2.1.3. Test piece

               The test piece