Document ID: chunk:federal_register_of_legislation:F2015C00542:reg:1:p39
Version: federal_register_of_legislation:F2015C00542
Segment Type: reg
Provision Reference: reg 1 (pt 39/43)
Character Range: 250154–253182

test 227 g ball test

              5.1. Indices of difficulty of the secondary characteristics:

               No secondary characteristic is involved.

              5.2. Number of test pieces

               Ten flat test pieces of the outer component sheet or ten finished parts of size
              300 mm x 300 mm (+10/-0 mm) shall be subjected to testing.

              5.3. Test method

              5.3.1. The method used shall be that prescribed in Annex 3, paragraph 2.1.

               Impact will be on the outer side of the test window

              5.3.2. The height of drop for the various thickness values of the outer component of the window is given in the table below:

Outer sheet thickness (mm)  Height of drop (m)
< 3                         2
  4                         3
  5                         4
> 6                         5

              For intermediate values of thickness in the interval between 3 mm and 6 mm the height of drop shall be interpolated.

              5.4. Interpretation of results

              5.4.1. The ball test shall be considered to have given a satisfactory result if the following conditions are met:

               (a) The ball does not penetrate the test piece

               (b) The test piece does not break into separate pieces.

              5.4.2. A set of test pieces submitted for approval shall be considered satisfactory from the point of view of the 227 g ball test if one of the following conditions is met:

              5.4.2.1. Eight or more separate tests give a satisfactory result at the drop height.

              5.4.2.2. Three or more tests having given an unsatisfactory result, a further series of tests carried out on a new set of test pieces gives satisfactory results.

              5.5. 227 g ball test at -18 °C ± 2 °C

              5.5.1. To minimize the temperature change of the test piece, the test shall be performed within 30 seconds of the removal of the test piece from the conditioning appliance.

              5.5.2. The test method shall be that described in paragraph 5.3. of this annex, except that the test temperature is -18 °C ± 2 °C.

              5.5.3. Interpretation of results as in paragraph 5.4. of this annex.

              6. Test resistance to the environment

              6.1. Test of resistance to abrasion

              6.1.1. Indices of difficulty and test method

               The requirements of Annex 3, paragraph 4., shall apply; the test is performed for either 1,000, 500 or 100 cycles to measure abrasion of the surface of the product.

              6.1.2. Three flat square test pieces of 100 mm for each type of surface shall be subjected to testing.

              6.1.3. Interpretation of results

              6.1.3.1. In the case of glazing of class L, the abrasion test shall be considered to have given a satisfactory result if the total light scatter after abrasion does not exceed 2 per cent after 1,000 cycles on the outer surface of the test sample and 4 per cent