Document ID: chunk:federal_register_of_legislation:F2015C00542:reg:1:p17
Version: federal_register_of_legislation:F2015C00542
Segment Type: reg
Provision Reference: reg 1 (pt 17/43)
Character Range: 189546–192250

secondary characteristics
 No secondary characteristic is involved.
3.2. Headform test on a complete windscreen
3.2.1. Number of test pieces
 Four test pieces from the smallest-developed-area series and four samples from the largest-developed-area series selected in accordance with the provisions of Annex 13, shall be tested.
3.2.2. Test method
3.2.2.1. The method used shall be that described in Annex 3. paragraph 3.1.
3.2.2.2. The drop height shall be 1.5 m +0/-5 mm.
3.2.3. Interpretation of results
3.2.3.1. This test shall be deemed to have given a satisfactory result if the following conditions are fulfilled:
3.2.3.1.1. The test piece breaks displaying numerous circular cracks centred approximately on the point of impact, the cracks nearest to the point of impact being not more than 80 mm from it;
3.2.3.1.2. The layers of glass shall remain adhering to the plastics-material interlayer. One or more partial separation from the interlayer with a distance of less than 4 mm in breadth, on either side of the crack, is permitted outside a circle of
60 mm in diameter centred on the point of impact.
3.2.3.1.3. On the impact side:
3.2.3.1.3.1. The interlayer shall not be laid bare over an area of more than 20 cm2,
3.2.3.1.3.2. A tear in the interlayer up to a length of 35 mm is allowed.
3.2.3.2. A set of test pieces submitted for approval shall be considered satisfactory from the point of view of the headform test if all the tests give a satisfactory result.
4. Mechanical strength test
4.1. Indices of difficulty of the secondary characteristics
 No secondary characteristic is involved.
4.2. 2,260 g ball test
4.2.1. Twelve square test pieces of 300 mm  mm side shall be subjected to testing.
4.2.2. Test method
4.2.2.1. The method used shall be that described in Annex 3, paragraph 2.2.
4.2.2.2. The height of drop (from the underface of the ball to the upper face of the test piece) shall be 4 m            mm.
4.2.3. Interpretation of results
4.2.3.1. The test shall be deemed to have given a satisfactory result if the ball does not pass through the glazing within five seconds after the moment of impact.
4.2.3.2. A set of test pieces submitted for approval shall be considered satisfactory from the point of view of the 2,260 g ball test if at least eleven of the twelve tests have given a satisfactory result.
4.3. 227 g ball test
4.3.1. Indices of difficulty of the secondary characteristics
 No secondary characteristic is involved.
4.3.2. Number of test pieces
 Twenty square test pieces of 300 mm         mm side shall be subjected to testing.
4.3.3. Test method
4.3.3.1. The method used shall be that described in Annex 3, paragraph 2.1.
 Ten test pieces shall be tested at