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GB/T 5137.2-2020 English PDF (GB/T 5137.2-2002, GB/T 5137.2-1996)

GB/T 5137.2-2020_English: PDF (GB/T5137.2-2020)
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 5137.2-2020English245 Add to Cart 0--9 seconds. Auto-delivery Test methods of safety glazing materials used on road vehicles -- Part 2: Optical properties tests Valid GB/T 5137.2-2020
GB/T 5137.2-2002English85 Add to Cart 0--9 seconds. Auto-delivery Test methods of safety glazing materials used on road vehicles -- Part 2: optical properties tests Obsolete GB/T 5137.2-2002
GB/T 5137.2-1996English559 Add to Cart 4 days [Need to translate] Road vehicles--Safety glazing materials--Test methods for optical properties Obsolete GB/T 5137.2-1996
GB 5137.2-1987English239 Add to Cart 2 days [Need to translate] Road vehicles--Safety glasses--Test methods for optical properties Obsolete GB 5137.2-1987


BASIC DATA
Standard ID GB/T 5137.2-2020 (GB/T5137.2-2020)
Description (Translated English) Test methods of safety glazing materials used on road vehicles -- Part 2: Optical properties tests
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard T34
Classification of International Standard 43.040.60
Word Count Estimation 18,173
Date of Issue 2020-03-31
Date of Implementation 2021-02-01
Drafting Organization China National Building Materials Inspection and Certification Group Co., Ltd., Fuyao Glass Industry Group Co., Ltd., Nanjing Anda Glass Technology Co., Ltd., Jiangsu Tiemao Glass Co., Ltd., Xinyi Auto Parts (Wuhu) Co., Ltd., Asahi Glass Auto Glass (China) Co., Ltd. , Xinyi Energy Saving Glass (Sichuan) Co., Ltd., Xinyi Auto Glass (Shenzhen) Co., Ltd., National Safety Glass and Quartz Glass Quality Supervision and Inspection Center
Administrative Organization National Automotive Standardization Technical Committee (SAC/TC 114)
Proposing organization Ministry of Industry and Information Technology of the People's Republic of China
Issuing agency(ies) State Administration for Market Regulation, National Standardization Administration

BASIC DATA
Standard ID GB/T 5137.2-2002 (GB/T5137.2-2002)
Description (Translated English) Test methods of safety glazing materials used on road vehicles - Part 2: optical properties tests
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard Q34
Classification of International Standard 81.040.30
Word Count Estimation 15,135
Date of Issue 2002-12-20
Date of Implementation 2003-05-01
Older Standard (superseded by this standard) GB/T 5137.2-1996
Adopted Standard ISO 3538-1997; MOD
Drafting Organization China Building Materials Academy, Institute of Science and specialty glass fiber glass
Administrative Organization National Automotive Standardization Technical Committee Technical Committee safety glass
Proposing organization Former State Building Materials Industry Bureau
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China
Summary This standard specifies the: automotive safety glass Test methods for optical properties. This standard applies to: automotive safety glass (hereinafter referred to as safety glass). This includes all types of safety glass glass processed into or a combination of glass and other materials into glass products.

BASIC DATA
Standard ID GB/T 5137.2-1996 (GB/T5137.2-1996)
Description (Translated English) Road vehicles--Safety glazing materials--Test methods for optical properties
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard Q30
Classification of International Standard 81.040.30
Word Count Estimation 14,163
Date of Issue 1996/3/26
Date of Implementation 1996/10/1
Older Standard (superseded by this standard) GB 5137.2-1987
Adopted Standard ISO 3538/DIS-1992, MOD


GB/T 5137.2-2020 NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 43.040.60 T 34 Replacing GB/T 5137.2-2002 Test methods of safety glazing materials used on road vehicles - Part 2: Optical properties tests (ISO 3538:1997, Road vehicles - Safety glazing materials - Test methods for optical properties, MOD) ISSUED ON: MARCH 31, 2020 IMPLEMENTED ON: FEBRUARY 01, 2021 Issued by: State Administration for Market Regulation; Standardization Administration of the PRC. Table of Contents Foreword ... 3  1 Scope ... 6  2 Normative references ... 6  3 Terms and definitions ... 6  4 Test conditions ... 6  5 Visible light transmittance test ... 6  6 Secondary image separation test ... 8  7 Optical distortion test ... 14  8 Visible light reflectance test ... 19  Annex A (Informative) Structural changes of this Part compared with ISO 3538:1997 ... 21  Annex B (Informative) Technical differences between this Part and ISO 3538:1997 and their causes ... 24  Annex C (Informative) S(λ)V(λ) values ... 27  Test methods of safety glazing materials used on road vehicles - Part 2: Optical properties tests 1 Scope This Part of GB/T 5137 specifies the methods for visible light transmittance test, secondary image separation test, optical distortion test, and visible light reflectance test of safety glazing materials used on road vehicles. This Part applies to the tests of safety glazing materials used on road vehicles. 2 Normative references The 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. QC/T 1119 Road vehicles - Glazing materials - Terminology (QC/T 1119- 2019, ISO 3536:2016, MOD) 3 Terms and definitions For the purposes of this document, the terms and definitions given in QC/T 1119 apply. 4 Test conditions Unless otherwise specified, the tests shall be carried out under the following ambient conditions: a) Ambient temperature: 20 °C±5 °C; b) Atmospheric pressure: 8.60×104 Pa~1.06×105 Pa; c) Relative humidity: 40%~80%. 5 Visible light transmittance test 5.1 Test purpose Determine whether the safety glazing material has a certain regular transmittance. 5.2 Sample It shall use the product or test piece. The test piece can be cut from the corresponding test area on the product. Before the test, the sample shall be clean and free of dirt and condensation. 5.3 Test apparatus 5.3.1 Light source: Tungsten lamp. Its filament is in a parallel hexahedron of 1.5 mm×1.5 mm×3 mm; or a defining diaphragm is added. The spectral distribution of the light source shall conform to the relative spectral power distribution of CIE standard illuminant A. The voltage applied to the two ends of the filament shall make the color temperature 2856 K±50 K. The voltage shall be stable within ±0.1%. 5.3.2 Optical system: The schematic diagram of its test principle is shown in Figure 1. It consists of two lenses L1 and L2 with focal length f not less than 500 mm and corrected for chromatic aberration. The relative aperture of the lens does not exceed f/20. The distance between the lens L1 and the light source shall be adjustable, to obtain a substantially parallel beam. On the side away from the light source at a distance of 100 mm±50 mm from the lens L1, install a diaphragm A1. LIMIT the diameter of the beam to 7 mm±1 mm. The second diaphragm A2 shall be placed in front of the lens L2 with the same performance as L1. The image of the light source shall be located in the center of the receiver. The third diaphragm A3, whose diameter is slightly larger than the cross-section of the maximum size of the light source image. It shall be placed in front of the receiver, to avoid the scattered light generated by the sample falling on the receiver. The measuring point shall be at the center of the beam. 2 - Lens L1; 6 - Lens L2; 3 - Diaphragm A1; 7 - Diaphragm A3; 4 - Sample; 8 - Receiver. Figure 1 -- Schematic diagram of test principle of optical system 5.3.3 Measuring device: The relative spectral sensitivity of the receiver shall be consistent with the CIE 1931 spectral luminous efficiency. The sensitive surface of the receiver shall be covered with a scattering medium; and shall be at least twice the cross-section of the largest size of the light source image. If an integrating sphere is used, the diameter of the sphere's entrance port shall be at least twice the cross-section of the largest size of the light source image. The linearity of the receiver and the supporting indicator shall not be greater than ±2% of full scale or ±10% of the reading value. Choose a small value. 5.4 Test procedure 5.4.1 TURN on the power of the instrument. Before putting the sample into the light path, adjust the display value of the receiver to 100. BLOCK the light path; adjust the receiver display value to 0. 5.4.2 PUT the sample between the diaphragms A1 and A2. Adjust the orientation of the sample, so that the incident angle of the beam and the glass surface is 90°±5°. 5.4.3 Determine the visible light transmittance of the sample; READ the receiver display value n. The result retains 1 decimal place. The visible light transmittance τr is equal to n/100. 6 Secondary image separation test 6.1 Test purpose Determine the angular separation between the primary and secondary images. 6.2 Sample USE the product as a sample. 6.3 Test methods Two test methods can be used: a) Target test; 3 - Center of field of view. Figure 6 -- Example of observation by collimation telescope test 6.5.3 Test procedure In order to easily see the existence of secondary image, set the instrument in a dark room or dark place. USE the collimation telescope to measure the most severe area of the sample under the real vehicle installation angle, to determine the maximum value of secondary image separation. It is also possible to use the target-type illuminant control instrument to check the safety glazing material with a simple and fast scanning method, to determine in which areas the most severe secondary image appears. 7 Optical distortion test 7.1 Test purpose Determine the optical distortion of safety glazing material. 7.2 Sample USE the product as a sample. 7.3 Test apparatus The test apparatus shall consist of the following parts: a) Slide projector: SELECT a suitable light source. The focal length shall not be less than 90 mm. The relative aperture shall be about 1/2.5. The light path is shown in Figure 7. A diaphragm with a diameter of 8 mm is placed about 10 mm in front of the lens. b) Slide: The projected image is a bright circular array on a dark background. The quality and contrast of the slide shall meet the test requirements, in order to control the measurement error within 5%. When the sample is not placed in the light path, the slide shall get the image shown in Figure 8 on the screen. Where: Δα - Optical distortion, in minutes of arc ('); Δd - Maximum deformation, in millimeters (mm); R2 - The distance from the sample to the screen, in meters (m). 8 Visible light reflectance test 8.1 Test purpose Determine the visible light reflectance of safety glazing material under standard illuminant A conditions. 8.2 Sample It shall use the product or test piece. The test piece can be cut from the corresponding test area on the product. Before the test, the sample shall be clean and free of dirt and condensation. 8.3 Test apparatus 8.3.1 Test apparatus can be divided into spectrophotometer and photoelectric integrating photometer. The maximum allowable error shall not be greater than 1.5%. 8.3.2 From the measured spectral reflectance value ρ(λ), the spectrophotometer shall be able to use the relative spectral power distribution function SA(λ) of the standard illuminant A and the CIE spectral luminous efficiency V(λ) to calculate the visible light reflectance for standard illuminant A. 8.3.3 The relative spectral power distribution of the light source of the photoelectric integrating photometer shall conform to the CIE standard illuminant A. The relative spectral response of the detector shall conform to the CIE spectral luminous efficiency V(λ); and directly generate the visible light reflectance of the standard illuminant A. 8.3.4 The geometric (optical) conditions of the test apparatus shall be one of the following: a) Diffuse/vertical (d : 0°): The sample is diffusely illuminated by an integrating sphere. The angle between the normal of the sample and the axis of the measuring beam shall not exceed 10°. The angle between any one of the beams of at least one end of the receiving beam and its own optical axis does not exceed 5°. b) Vertical/diffuse (8° : d): The sample is illuminated by a beam of light. The angle between the axis of the beam and the normal of the sample shall not exceed 8°. USE an integrating sphere to collect the reflected luminous flux. The angle between any one of the beams of at least one end of the illuminating beam and its own optical axis does not exceed 5°. 8.3.5 The diameter of the integrating sphere of the test apparatus shall not be less than 100 mm. The total area of the opening shall not be greater than 10% of the surface area of the sphere. The inner surface of the sphere is uniformly coated with a highly diffuse reflective material, which is almost non-selective for the spectrum. 8.3.6 The light absorbing trap of the test apparatus shall be a device, which can reduce the reflection caused by transmitted light to 1% or less of the measured visible light reflectance. It can also block spurious transmitted light from the opposite side of the sample. 8.4 Test procedure 8.4.1 CLEAN the sample. 8.4.2 For the spectrophotometer, the visible light reflectance is calculated according to formula (5). The result is accurate to 0.1%. Where: ρA - Visible light reflectance under standard illuminant A conditions; ρ(λ) - Spectral reflectance measured by a spectrophotometer; S(λ)V(λ) - The relative value of the product of the relative spectral power distribution function of the standard illuminant A and the CIE spectral luminous efficiency. See Annex C. 8.4.3 For the photoelectric integrating photometer, directly measure the sample. The value obtained is the visible light reflectance. The result is accurate to 0.1%. 8.4.4 RECORD the type of sample, the instrument used, and the visible light reflectance of the sample. ......


GB/T 5137.2-2002 GB ICS 81.040.30 Q 34 NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA Replacing GB/T 5137.2-1996 Test Methods of Safety Glazing Materials Used on Road Vehicles – Part 2. Optical Properties Test (ISO 3538.1997, Road vehicles - Safety glazing materials - Test methods for optical properties, MOD) ISSUED ON. DECEMBER 20, 2002 IMPLEMENTED ON. MAY 1, 2003 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China (AQSIQ) Table of Contents Foreword ... 3  1. Scope ... 5  2. Test Conditions ... 5  3. Test Application Conditions ... 5  4. Visible Light Luminous Transmittance Test ... 5  5. Secondary Image Deviation Test ... 7  6. Optical Distortion Test ... 11  7. After-fracture Visibility Test ... 15  8. Color Identification Test ... 16  9. Visible Light Luminous Reflectance Test ... 17  Annex A ... 21  Foreword GB/T 5137 “Test Methods of Safety Glazing Materials Used on Road Vehicles” is divided into four parts. -- Part 1. Mechanical Properties Test; -- Part 2. Optical Properties Test; -- Part 3. Radiation, High Temperature, Humidity, Fire and Simulated Weathering Resistance Tests; -- Part 4. Method for the Determination of Solar Transmittance. This is Part 2 of GB/T 5237. This Part of GB/T 5137 modifies and adopts ISO 3537.1997 “Road Vehicles - Safety Glazing Materials - Test Methods for Mechanical Properties” (English Version). The main differences between this Part and the international standard include. -- the “Definitions” in the international standard is deleted. -- The impact position and schematic diagram of the "visibility test after fracture" are changed in accordance with that stated in GB 9656-2003. This Part replaces GB/T 5137.2-1996 “Road Vehicles - Safety Glazing Materials - Test Methods for Mechanical Properties”. Compared with GB/T 5137.2-1996, the main changes of this Part are as follows. -- The "4. Luminous Transmittance Test" is changed into "4. Visible Light Luminous Transmittance Test". -- 4.1 Test objectives of the visible light luminous transmittance is changed into. "to determine whether the safety glass has a certain visible light luminous transmittance". -- 5.1 Test objectives of the secondary image deviation is changed into. "to determine the corner deviation between the primary image and the secondary image". -- “7. Test objectives of the visibility-after-fracture test” is changed into "7. Test objectives of the visibility-after-fracture test" [Translator note. In English, both words are the same]. -- The position and schematic diagram of the impact points are maintained to be Test Methods of Safety Glazing Materials Used on Road Vehicles – Part 2. Optical Properties Test 1. Scope This Part of GB/T 5137 specifies the test method for the optical properties of safety glass used for road vehicles. This Part is applicable for the road vehicle safety glass (hereinafter referred to as safety glass). The safety glass includes glass products processed from all kinds of glass OR the combination of the glass and other materials. 2. Test Conditions Unless otherwise specified, the test shall be carried out under the following conditions. a) Environmental Temperature. 20°C±5°C; b) Air Pressure. 8.60×104Pa ~ 1.06×105Pa; c) Relative Humidity. 40% ~ 80%. 3. Test Application Conditions For some kind of safety glass, if the test result can be predicted based on the known properties, then all experiments specified by this Standard are not necessary to be carried out [Translator note. All experiments might be exempted]. 4. Visible Light Luminous Transmittance Test 4.1 Test Objectives This test is to determine whether the safety glass has a certain visible light luminous transmittance. 4.2 Specimens The linearity of the receiver and the supporting display instrument shall be equal to within ±2% of the full-scale, or within ±10% of the reading measurement range; the smaller value prevails. 4.4 Test Procedures 4.4.1 Before the specimen is placed in front of the light path, the indicated value of the receiver display instrument shall be adjusted to 100 scale-division. When there is no light on the receiver, the indicated value is deemed as zero. 4.4.2 The specimen shall be placed between A1 and A2, and have its direction adjusted so that the incident angle of the light beam is equal to 0°±5°. 4.4.3 The visible light luminous transmittance of the specimen shall be measured. For each measuring point, the indicated value (n) on the display instrument shall be read. The visible light luminous transmittance (τr) is equal to n/100. 4.5 Result Expression According to the above method, the visible light luminous transmittance (τr) shall be expressed by the measured value of any point. 4.6 Substitution Method As long as the provisions in 4.3.3 are met, other methods that can get the same visible light luminous transmittance result can be adopted. 5. Secondary Image Deviation Test 5.1 Test Objectives This test is to determine the angular deviation between the primary image and the secondary image. 5.2 Specimens Front windscreen glass product. 5.3 Application Scope Two testing methods may be adopted. -- target test; -- collimation telescope test. White, yellow, red, green, blue and amber color-plates. 8.4 Test Procedures The color-plates shall be observed through the test area of the specimen. 8.5 Result Expression Determine whether the color of the plates seen from the windscreen is the primary color. 9. Visible Light Luminous Reflectance Test 9.1 Test Objectives It is to determine the visible light luminous reflectance of the safety glass under the standard illuminant A (see Annex A). 9.2 Instruments 9.2.1 First-class Instrument. lab photometer or spectrophotometer with a high precision and integral sphere type, able to measure the specimen luminous reflectance under the measurement standard illuminant A conditions. The geometrical (optical) conditions of the first-class instrument shall be one of the following. a) Diffusion/vertical (d/0). the specimen is illuminated by the integral sphere diffusion. The included angle between the normal and the axis of the measuring light beams shall not exceed 10°. b) Vertical/diffusion (8/d). the specimen is illuminated by a light beam. The included angle between the light beam axis and the normal of the specimen shall not exceed 8°. The integral sphere shall be adopted to collect the reflected light flow. The diameter of the integral sphere in the first-class instrument shall not be less than 100mm. The total area of the opening of the integral sphere shall not be greater than 10% of the sphere surface. The internal surface of the sphere shall be evenly coated with the high-diffusion reflection materials (visible light luminous reflectance greater than 95%) that is non-selective to the spectrum. 9.2.2 Second-class instrument. photometer having the precision lower than the first-class instrument, portable, able to measure the luminous reflectance of the safety glass of the standard illuminant A conditions, and able to calculate the measured value through 9.3.5. Connect the circuit. When the light source and the detector are stabilized, the extinction trap is placed on the measurement hole of the reflection specimen. Adjust the visible light luminous reflectance value to be zero. Then, place the first-class standard specimen on the measurement hole. Read the visible light luminous reflectance value from the instrument. b) Calibration of Spectrophotometer The calibration shall be made according to provisions of instrument. 9.4.2 Measurement of First-class Instrument Indicate the second-class standard sample’s film-face and bending direction; place it on the measurement hole of the specimens; measure the visible light luminous reflectance. 9.4.3 Calibration of Second-class Instrument Connect the circuit. When the light source and the detector are stabilized, place the extinction trap on the measurement hole of the reflection specimen. Adjust the visible light luminous reflectance value to be zero. Position the second-class standard samples according to the specimen reflection location indicated in Article 3.5.4.2. Place the extinction trap behind the second-class samples Adjust the value (Cb) of the second-class instrument to the visible light luminous reflectance value (ρ0) of the first-class instrument as possible. 9.4.4 Measurement of Second-class Instrument For the measurement on second-class instrument, it shall adjust the specimens and extinction trap according to Article 9.4.3, so as to measure the visible light luminous reflectance value (Ca) of the specimen. The flattest area of the specimen shall be observed. At least three separate measured values shall be read. 9.4.5 Calculation of Calibration Standard illuminant A Visible Light Luminous Refl... ......

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