ISO3917:1999 Automotive Safety Test Standard

1 Subject content and scope of application 　　 This standard specifies the radiation resistance, high temperature, humidity, combustion and simulated weather resistance test methods of safety glass for road vehicles. This standard applies to the safety requirements of safety glass for road vehicles (hereinafter referred to as safety glass). Such safety glass includes products processed from various types of glass or combined with glass and other materials.　　　　 Reference Standard 　　 This standard uses the following standards by way of reference. The latest revisions and supplements or version changes of the standards were not reflected in a timely manner. However, all parties who have adopted the standard encourage the application of the latest version as much as possible, as shown below. For standards not given time, the latest time shall prevail. ISO and IEC members are responsible for the registration of existing valid international standards. ISO 3536:1999　　ISO 3537:1999　　ISO 3538:1997　　ISO 3795:1989　　ISO 4892-1:1999　　ISO 4892-2:1999　　ISO 4892-4:1999　　　ISO 15082:1999　　　　ISO 15082:1999　　　　　　　　　　　　　　　　　　　　　　　　ISO 4892-2:1999　　ISO 4892-4:1999　　　Given in. Except for special regulations, the test should be carried out under the following conditions: 　　-- .Temperature: 20℃±5℃　　--. Air pressure: 86kPa-106 kPa (860mbar to 1060 mbar)　　-- .Relative humidity: 60%±20 %　　　　 Test items and applications For certain types of safety glass, if the test results can be predicted based on some of its known properties, all the tests specified in this standard are not required.　　　　Radiation Resistance Test　　6.1 Test Purpose 　　In order to determine whether the safety glass will have obvious discoloration or decrease in transmittance after a certain period of time of irradiation.　　6.2 device 　　 6.2.1 irradiation light source 　　 ozone-free quartz tube type medium pressure mercury vapor arc lamp. The axis of the lamp housing should be vertical. The nominal size of the lamp is 360mm long, 9.5mm in diameter, 300mm±14mm in arc length, and its working power is 750W±50W.　　 Any other irradiation light source equivalent to the lamp specified above can be used. In order to check the equivalence of alternative light sources, comparison is required. The method is to measure the energy emitted in the range of wavelength 300nm-450nm, and filter out other wavelengths with a suitable filter. Therefore, filters should be added when using alternative light sources.　　 For safety glass whose service conditions do not have a good correlation with this test, the test conditions must be reconsidered.　　 6.2.2 Power transformer and capacitor 　　 can provide the arc lamp (6.2.1) with a minimum starting peak voltage of 1100V and a working voltage of 500V±50V.　　 6.2.3 The sample fixing and rotating device rotates around the irradiation source set on the uranium core at a speed of 1 r/min-5 r/min to ensure uniform irradiation. 6.3 Sample size: 76mm×300mm　　 6.4 Test procedure Before irradiation, measure the transmittance of three test pieces according to ISO 3538, protect a part of each sample from irradiation, and then place the sample Place it on the device 230mm away from the lamp axis and make it parallel to the lamp axis in the 300mm length direction. Keep the sample temperature at 45±5°C throughout the test.　　 The side of the sample facing the lamp should be the side facing the outside when loading the vehicle. For 6.2.1 type lamps, the irradiation time is 100h.　　 Measure the transmittance of the irradiated area of u200bu200beach sample after irradiation.　　6.5 Expression of results 　　Compare the transmittance of the sample before and after irradiation of the same material. The change is expressed as a percentage.　　 Discoloration evaluation: 　　--- place the sample on a white background and compare the difference between the irradiated area and the shaded area; 　　---or measure the three primary color coordinates of the sample before and after irradiation, and calculate the color difference according to the International Commission on Illumination (CIE).　　　　7 heat resistance test　　7.1 test purpose 　　 evaluate whether the appearance quality of safety glass changes significantly after being subjected to high temperature for a certain period of time.　　7.2 Test procedure 　　 Heat one or more samples with a size of at least 300mm×300mm to 100 ℃ 0-2 ℃ for 2h, and then let the sample cool to room temperature naturally.　　 If the two outer surfaces of the safety glass are made of inorganic materials, the sample can be vertically immersed in boiling water at 100 ℃ 0-2 ℃ for the specified time during the test. Take care to avoid excessive thermal shock.　　 If the sample is cut from a product, one side of the sample should be a part of one side of the product.　　7.3 Expression of results 　　 According to the above 7.2 test, observe the bubbles and other defects generated in the sample to evaluate the high temperature resistance of the safety glass.　　 Defects within 15mm from the non-cutting edge, 25mm from the cutting edge, or 10mm from any cracks that may occur, will not be considered.　　 If the crack of the sample has grown to the extent that it confuses the test results, the sample shall be discarded, and another sample shall be replaced for testing.　　　　Humidity Resistance Test　　8.1 Test Purpose 　　To determine whether the safety glass can withstand the action of atmospheric moisture for a certain period of time. 8.2 Test procedure Place one or more samples with a size of at least 300mm×300mm vertically in a closed container for 2 weeks. The temperature of the container is maintained at 50℃±2℃ and the relative humidity is (95%±4). %.　　There should not be any condensation on the surface of the sample under the above conditions.　　 If several samples are tested at the same time, a proper gap should be left between the samples.　
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