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GB 9656-2021: Safety technical specification for glazing materials used in power-driven vehicles Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB 9656: Historical versions
GB 9656-2021: Safety technical specification for glazing materials used in power-driven vehicles---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB9656-2021 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 43.040.60 T 26 Replacing GB 9656-2003 Safety technical specification for glazing materials used in power-driven vehicles Issued on. APRIL 30, 2021 Implemented on. JANUARY 01, 2023 Issued by. State Administration for Market Regulation; Standardization Administration of the PRC. Table of ContentsForeword... 4 1 Scope... 6 2 Normative references... 6 3 Terms and definitions... 7 4 Classification... 11 5 Technical requirements... 11 6 Test methods... 19 7 Determination rules... 21 Appendix A (Normative) Determination of the windscreen test area... 23 Appendix B (Normative) Individual determination rules for inspection items.. 33 Bibliography... 401 ScopeThis Standard specifies the terms and definitions, classification, technical requirements, test methods, and determination rules related to the safety features of glazing materials used in power-driven vehicles. This Standard applies to glazing materials used in power-driven vehicles including categories M, N, O, as well as category L vehicles with cabs, and special vehicles for agriculture and forestry. This Standard does not apply to glazing materials used in lighting, signaling devices and instrument panels of power-driven vehicles. Note. See GB/T 15089 for the classification of category L, M, N and O vehicles.2 Normative referencesThe following documents are indispensable for the application of this document. For the dated references, only the editions with the dates indicated are applicable to this document. For the undated references, the latest edition (including all the amendments) are applicable to this document. GB/T 5137.1 Test methods of safety glazing materials used on road vehicles - Part 1.Mechanical properties tests GB/T 5137.2 Test methods of safety glazing materials used on road vehicles - Part 2.Optical properties tests GB/T 5137.3 Test methods of safety glazing materials used on road vehicles - Part 3.Radiation, high temperature, humidity, fire and simulated weathering resistance tests GB/T 5137.5 Test methods of safety glazing materials used on road vehicles - Part 5.Resistant-to-chemical and resistant-to-temperature changes test GB/T 31849-2015 Film mounted motor vehicle glass QC/T 1119-2019 Automobile safety glass terminology3 Terms and definitionsThe terms and definitions defined in QC/T 1119-2019 and the following ones apply to this document. For ease of use, some terms and definitions in QC/T 1119-2019 are listed repeatedly below. 3.1 Power-driven vehicle A wheeled vehicle which is driven or towed by a power unit and running on the road for people to ride or to transport objects and perform special engineering operations. 3.2 Safety glazing material A transparent material, used in vehicles, which is processed or compounded by inorganic materials and/or organic materials. It can effectively reduce the possibility of personal injury; has a certain field of view, strength and durability. [QC/T 1119-2019, definition 2.1.1] 3.3 Glazing materials used in power-driven vehicles Safety glazing materials installed on power-driven vehicles to provide the driver and occupants with an observation field of view, daylighting, separation of compartment space, or other functions. 3.4 Tempered safety glass A safety glazing material which is made of single-layer glass through special heat treatment to increase its mechanical strength and be able to control its fragmentation state after being broken. [QC/T 1119-2019, definition 2.1.4] 3.5 Laminated safety glass A safety glazing material which is made of two or more layers of glass glued with one or more intermediate layers. [QC/T 1119-2019, definition 2.1.5] 3.6 Glass-plastic safety glazing material It is composed of one or more layers of inorganic materials and one or more layers of organic materials. The side facing passengers after installation is made of organic materials. [QC/T 1119-2019, definition 2.1.2]4 Classification4.1 According to the production processing technology and/or material, glazing materials used in power-driven vehicles are classified into laminated safety glass, tempered safety glass, insulating safety glazing unit, glass-plastic safety glazing material, rigid plastic glazing pane, and safety glazing faced with plastic material. 4.2 According to the application location, glazing materials used in power-driven vehicles are classified into windscreen and glass panes other than windscreen.5 Technical requirements5.1 General 5.1.1 Laminated safety glass, glass-plastic safety glazing material, and tempered safety glass are suitable for any part of power-driven vehicles. When tempered safety glass is used for the windscreen, it is only suitable for vehicles with a design speed of less than 40 km/h. Insulating safety glazing unit and rigid plastic glazing pane are suitable for any part other than the windscreen. 5.1.2 Laminated safety glass, tempered safety glass or insulating safety glazing unit used for substrates of safety glazing faced with plastic material shall comply with the relevant provisions of this Standard. 5.1.3 The safety technical requirements for glazing materials used in power- driven vehicles include visual field safety requirements, strength safety requirements, damage safety requirements, and environmental durability safety requirements. 5.2 Visual field safety requirements 5.2.1 Visible light transmittance 5.2.1.1 The visible light transmittance of the windscreen shall meet the requirements of Table 1.The visible light transmittance of the glass panes other than windscreen used for the driver’s vision area shall not be less than 70%. 5.2.2 Secondary image deviation 5.2.2.1 The deviation of the secondary image of the windscreen shall meet the requirements of Table 2.For the part where the 100 mm area inward from the window opening enters the area I or the expanded area A, the maximum deviation of the secondary image shall not be greater than 25'. 5.2.2.2 No inspection is performed for the 25 mm area inward from the window opening or the inner edge of the black border. This area cannot enter area I or the expanded area A. For the windscreen with a separation column in the center, the 35 mm area adjacent to the separation column will not be inspected. 5.2.3 Optical distortion 5.3 Strength safety requirements 5.3.1 Human head model impact performance 5.3.2 Penetration resistance For the laminated safety glass and glass-plastic safety glazing material for the windscreen, within 5 s after the impact, the steel ball shall not penetrate the specimen. 5.3.3 Impact resistance 5.3.3.1 For laminated safety glass for windscreen, the specimen after impact shall meet the following requirements. 5.4 Damage safety requirements6 Test methods6.1 General If the inspection item does not affect the performance of the specimen, the specimen can be used to continue the test of other items. When using a special test piece for testing, the test piece shall be produced with the same thickness, the same material, and the same process conditions as the product. 6.2 Tests of visual field safety performance 6.2.1 Visible light transmittance According to the method specified in GB/T 5137.2, carry out the test. When the product is used as the sample, measure the flat part of the test area. For the head-up display windscreen product, measure the flat and thicker part of the test area. 6.2.2 Optical distortion According to the method specified in GB/T 5137.2, carry out the test. When the position of the window opening cannot be clearly indicated on the surface of the windscreen, the edge of the windscreen shall prevail. 6.2.3 Secondary image deviation According to the method specified in GB/T 5137.2, carry out the test. When the position of the window opening cannot be clearly indicated on the surface of the windscreen, the edge of the windscreen shall prevail. 6.3 Tests of strength safety performance 6.3.1 Human head model impact performance According to the method specified in GB/T 5137.1, carry out the test. For laminated safety glass, glass-plastic safety glazing material, and insulating safety glazing unit, carry out a human head model impact test without deceleration measurement. For rigid plastic glazing pane, carry out a human head model impact test with deceleration measurement. 6.3.2 Penetration resistance According to the method specified in GB/T 5137.1, carry out the test. 6.3.3 Impact resistance According to the method specified in GB/T 5137.1, carry out the test. Rigid plastic glazing pane is only subjected to low temperature test. 6.4 Tests of damage safety performance 6.5 Tests of environmental durability safety performance 6.5.1 Wear resistance According to the method specified in GB/T 5137.1, carry out the test. For products with a thickness of more than 20 mm, a flat test piece made of the material of the surface to be ground of the product can be used as the specimen. The condition of the surface to be ground of the specimen shall be the same as that of the product. For safety glazing faced with plastic material, a 100 mm×100 mm film is attached to a 3 mm flat glass of the same size with a visible light transmittance of (89±1)%, to make specimens. The number of specimens is 3 pieces. The equipment and procedures of the test shall meet the requirements of GB/T 5137.1.The surface to be ground is the film surface. The number of revolutions is 100 r. 6.5.2 Heat resistance According to the method specified in GB/T 5137.3, carry out the test. 6.5.3 Radiation resistance According to the method specified in GB/T 5137.3, test the laminated safety glass and glass-plastic safety glazing material. And calculate the ratio of visible light transmittance after the test to the visible light transmittance before the test, expressed as a percentage, accurate to one decimal place. According to the method specified in 6.10 of GB/T 31849-2015, test the safety glazing faced with plastic material. 6.5.4 Humidity resistance 6.5.5 Resistant-to-temperature changes According to the method specified in GB/T 5137.5, carry out the test. 6.5.6 Simulated weathering resistance According to the method specified in GB/T 5137.3, carry out the test. And calculate the ratio of visible light transmittance after the test to visible light transmittance before the test, expressed as a percentage, accurate to one decimal place. 6.5.7 Volatile organic compounds According to the method specified in Appendix C of GB/T 31849-2015, carry out the test.7 Determination rules7.1 Individual determination The individual determination of each safety performance inspection item shall be carried out in accordance with the provisions of Appendix B. 7.2 Comprehensive determination When all the safety performance meets the requirements, the safety performance of the product is determined as conformity; otherwise it is nonconformity. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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