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GB/T 5137.2-2020 PDF English

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GB/T 5137.2-2020: Test methods of safety glazing materials used on road vehicles - Part 2: Optical properties tests
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GB/T 5137.2: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] deliveryName of Chinese StandardStatus
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 5137.2-2002English85 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 5137.2-1996English559 Add to Cart 4 days Road vehicles--Safety glazing materials--Test methods for optical properties Obsolete
GB 5137.2-1987English239 Add to Cart 2 days Road vehicles--Safety glasses--Test methods for optical properties Obsolete

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GB/T 5137.2-2020: Test methods of safety glazing materials used on road vehicles - Part 2: Optical properties tests


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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

Foreword

GB/T 5137 "Test methods of safety glazing materials used on road vehicles" is divided into 5 parts. - Part 1.Mechanical properties tests; - Part 2.Optical properties tests; - Part 3.Radiation, high temperature, humidity, fire and simulated weathering resistance tests; - Part 4.Determination of solar characteristic; - Part 5.Resistant-to-chemical and resistant-to-temperature changes test. This Part is Part 2 of GB/T 5137. This Part is drafted in accordance with the rules given in GB/T 1.1-2009. This Part replaces GB/T 5137.2-2002 "Test methods of safety glazing materials used on road vehicles - Part 2.Optical properties tests". Compared with GB/T 5137.2-2002, in addition to editorial changes, the main technical changes of this Part are as follows. - ADD Clause 2 Normative references (see Clause 2). - Delete "Test application conditions"; ADD "Terms and definitions" (see Clause 3; Clause 3 of the 2002 edition). - Amend the test purpose of the visible light transmittance test to "determine whether the safety glazing material has a certain regular transmittance" (see 5.1; 4.1 of the 2002 edition); ADD sample requirements (see 5.2); modify the requirements for light source of visible light transmittance test (see 5.3.1; 4.3.1 of the 2002 edition); delete "Expression of results" and "Alternative method" (see 4.5 and 4.6 of the 2002 edition). - ADD the sample requirements (see 6.2); ADD the requirements for the ring target equipment in the secondary image separation test and for the expression of the results (see 6.4.1, 6.4.2.3); ADD the distance requirement of the observer from the sample (see 6.4.2.2); delete the expression of results and move the part of the expression of results related to the test process to the test procedure (see 6.4.2.4; 5.4.3 of the 2002 edition). - Modify the clause titles of collimation telescope test. CHANGE "Test procedure" to "Test principle"; CHANGE "Expression of results" to "Test procedure" (see 6.5.2 and 6.5.3; 5.5.2 and 5.5.3 of the 2002 edition). CORRECT the orientation of the sample in the diagram of the apparatus for collimation telescope test (see Figure 5; Figure 5 of the 2002 edition). CHANGE the method of fast scanning with the target-type illuminant control instrument first to the optional method (see 6.5.2 and 6.5.3; 5.5.2 and 5.5.3 of the 2002 edition). - Delete restrictions on the light source of slide projector in the optical distortion test; ADD screen requirements (see 7.3; 6.3 of the 2002 edition). ADD the deviation range of R1 and R2 (see 7.4.1). Delete "Expression of results" and put its content into the test procedure (see 7.4.4; 6.5 of the 2002 edition). - Modify the visible light reflectance test; ADD sample requirements; delete the classification description of the instrument and the standard sample; DIVIDE the instrument into spectrophotometer and photoelectric integrating photometer; delete "Expression of results" (see 8.2, 8.3, 8.4; 9.2, 9.3, 9.4, 9.5 of the 2002 edition). - Delete the visibility after fracture test (see Clause 7 of the 2002 edition). - Delete the identification of color test (see Clause 8 of the 2002 edition). - Delete S(λ)V(λ) at 5 nm intervals and 10 nm intervals; retain the relative value S(λ)V(λ) at 5 nm intervals; modify the formula and put the formula in 8.4.2 (See Annex C; Annex A of the 2002 edition). This Part uses the redraft law to modify and adopt ISO 3538.1997 "Road vehicles - Safety glazing materials - Test methods for optical properties". Compared with ISO 3538.1997, this Part has a lot of adjustments in structure. Annex A lists the comparison table for clause-subclause number of this Part and ISO 3538.1997. There are technical differences between this Part and ISO 3538.1997.The clauses involved in these differences have been marked by a vertical single line (|) at the blank of the outer margin. Annex B gives a table of the relevant technical differences and their causes. This Part also makes the following editorial changes. - CHANGE the standard name. This Part was proposed by Ministry of Industry and Information Technology of the PRC. This Part shall be under the jurisdiction of National Technical Committee of Auto Standardization (SAC/TC 114). Drafting organizations of this Part. China Building Material Test & Certification Group Co., Ltd., Fuyao Glass Industry Group Co., Ltd., Nanjing Anda Glass Technology Co., Ltd., Jiangsu Tiemao Glass Co., Ltd., Xinyi Automobile Parts (Wuhu) Co., Ltd., AGC Automotive (China) Co., Ltd., Xinyi Energy-smart Glass (Sichuan) Co., Ltd., Xinyi Automobile Glass (Shenzhen) Co., Ltd., National Safety Glass and Quartz Glass Quality Supervision and Inspection Center. Main drafters of this Part. Qiu Juan, Wu Huiting, Ding Zuoxin, Zhang Congcong, Wen Yugang, Du Dayan, Dai Lei, He Changlong, An Yongfeng, Wang Yinmao, Yang Jianjun, Wang Sheng, Zhang Ping, Sui Chaoying, Wang Jingjing, Li Boye, Zuo Huixia, Zhang Jingling. The previous editions of the standard replaced by this Part were released as follows. - GB 5137.2-1987, GB/T 5137.2-1996, GB/T 5137.2-2002. 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.

5 Visible light transmittance test

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.

6 Secondary image separation test

The collimator forms, at infinity, the image of a polar co-ordinate system with a bright point at its center. See Figure 6. 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.

7 Optical distortion test

Determine the optical distortion of safety glazing material. 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.

8 Visible light reflectance test

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. ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.


      

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