Document ID: chunk:federal_register_of_legislation:F2015C00542:reg:1:p32
Version: federal_register_of_legislation:F2015C00542
Segment Type: reg
Provision Reference: reg 1 (pt 32/43)
Character Range: 229801–232714

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 side 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 piece and 4 per cent after 100 cycles on the inner surface of the test piece.

              6.1.3.2. In the case of glazing of class M, the abrasion test shall be considered to have given a satisfactory result if the total light scatter after abrasion does not exceed 10 per cent after 500 cycles on the outer surface of the test piece and 4 per cent after 100 cycles on the inner surface of the test piece.

              6.1.3.3. For sun roofs, no abrasion test is required.

              6.1.4. A set of test pieces for approval shall be considered satisfactory if one of the following conditions is met:

                  (a) All test pieces meet the requirements or

                  (b) One test piece having failed, a repeat of the tests on a new set of test pieces gives a satisfactory result.

              6.2. Test of resistance to simulated weathering

              6.2.1. Indices of difficulty and test method

               The requirements of Annex 3, paragraph 6.4., shall apply. The total ultraviolet radiant exposure with the long arc xenon lamp shall be 500 MJ/m2. During irradiation the test pieces shall be exposed to water spray in continuous cycles. During a cycle of 120 minutes the test pieces are exposed to light without water spray for 102 minutes and to light with water spray for 18 minutes.

              6.2.1.1. Other methods giving equivalent results shall be allowed.

              6.2.2. Number of test pieces

               Three flat test pieces 130 mm x 40 mm cut from a flat sheet sample shall be subjected to testing.

              6.2.3. Interpretation of results

              6.2.3.1. The