Document ID: chunk:federal_register_of_legislation:F2015C00542:reg:1:p40
Version: federal_register_of_legislation:F2015C00542
Segment Type: reg
Provision Reference: reg 1 (pt 40/43)
Character Range: 252966–255978

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 after 100 cycles on the inner surface of the test sample.

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

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

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

                  (a) All samples meet the requirements or

                  (b) One sample having failed, a repeat of the tests on a new set of samples 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 the outer skin of the window shall be subjected to testing.

              6.2.3. Interpretation of results

              6.2.3.1. The resistance to the simulated weathering shall be considered to have given a satisfactory result if:

              6.2.3.1.1. The light transmittance measured in accordance with Annex 3, paragraph 9.1 does not fall below 95 per cent of the pre-weathering value. Additionally, for windows which are required for driver visibility the value shall not fall below 70 per cent.

              6.2.3.1.2. No bubbles or other visible decompositions, discolorations, milkiness or crazing shall occur during weathering.

              6.2.4. A set of test pieces submitted for approval shall be considered satisfactory from the point of view of the resistance to simulated weathering if one of the following conditions is met:

              6.2.4.1. All test pieces have given a satisfactory result.

              6.2.4.2. One test piece having given an unsatisfactory result, a further series of tests carried out on a new set of test pieces gives satisfactory results.

              6.3. Cross-cut test

              6.3.1. Indices of difficulty and test method

               The requirements of Annex 3, paragraph 13., shall apply only to coated products.

              6.3.2.