GB/T 5137.4-2020 PDF English
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Test methods of safety glazing materials used on road vehicles - Part 4: Determination of solar characteristic
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| GB/T 5137.4-2001 | English | 85 |
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Road vehicles -- Safety glazing materials -- Method for the determination of solar transmittance
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GB/T 5137.4-2020: Test methods of safety glazing materials used on road vehicles - Part 4: Determination of solar characteristic
---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/GBT5137.4-2020
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.60
T 34
Replacing GB/T 5137.4-2001
Test methods of safety glazing materials used on road
vehicles - Part 4.Determination of solar characteristic
(ISO 13837.2008, Road vehicles - Safety glazing materials -
Method for the determination of solar transmittance, 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... 5
2 Normative references... 5
3 Terms and definitions... 5
4 Environmental conditions... 6
5 Test apparatus... 6
6 Sample... 6
7 Test procedure... 6
8 Data processing... 6
9 Expression of results... 14
Annex A (Informative) Structural changes of this Part compared with ISO
13837.2008... 15
Annex B (Informative) Technical differences between this Part and ISO
13837.2008 and their causes... 16
Bibliography... 18
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 4 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 5137.4-2001 "Road vehicles - Safety glazing materials
- Method for the determination of solar transmittance". Compared with GB/T
5137.4-2001, in addition to editorial changes, the main technical changes of
this Part are as follows.
- Modify the scope (see Clause 1; Clause 1 of the 2001 edition);
- Modify "Reference standards" to "Normative references"; ADD new
references (see Clause 2; Clause 2 of the 2001 edition);
- Delete some definitions in the previous standard (see Clause 3; Clause 3
of the 2001 edition);
- ADD requirements for environmental conditions (see Clause 4);
- Delete "Calculation convention B" in the previous standard (see 4.4.2 of the
2001 edition);
- ADD the calculation method of solar ultraviolet transmittance when the air
mass is 1.5 (see 8.1);
- ADD the calculation method of solar infrared direct transmittance (see 8.6);
- ADD the calculation method of solar infrared direct reflectance (see 8.7);
- ADD the calculation method of solar infrared direct absorptance (see 8.8);
- ADD the calculation method of total solar infrared thermal energy
transmittance (see 8.10).
This Part uses the redraft law to modify and adopt ISO 13837.2008 "Road
vehicles - Safety glazing materials - Method for the determination of solar
transmittance".
Compared with ISO 13837.2008, this Part has a lot of adjustments in structure.
Annex A lists the comparison table for clause-subclause number of this Part
and ISO 13837.2008.
There are technical differences between this Part and ISO 13837.2008.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 corresponding
technical differences and their causes.
This Part 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., Jiangsu Tiemao Glass
Co., Ltd., Xinyi Energy-smart Glass (Sichuan) Co., Ltd., Kangde Xin Optical
Film Materials (Shanghai) Co., Ltd., Xinyi Automobile Glass (Shenzhen) Co.,
Ltd., Dongguan Benson Automobile Glass Co., Ltd., National Safety Glass and
Quartz Glass Quality Supervision and Inspection Center.
Main drafters of this Part. Yang Xuedong, Zhang Haoyun, Huang Xiaolou, Wu
Jie, Ding Zuoxin, Cao Zengchen, Li Yongguang, Wang Yinmao, Yang Jianjun,
Zhang Jianjun, Xiao Songhua, Li Junjie, Zhang Ping, Liu Wen, Wang Xiaowei,
Yu Feng, Liu Jing, Pang Kun, Tu Hao.
The previous editions of the standard replaced by this Part were released as
follows.
- GB/T 5137.4-2001.
Test methods of safety glazing materials used on road
vehicles - Part 4.Determination of solar characteristic
1 Scope
This Part of GB/T 5137 specifies the method for determination of solar
characteristic of safety glazing materials used on road vehicles, including solar
ultraviolet transmittance, solar direct transmittance, solar direct reflectance,
solar direct absorptance, solar infrared direct transmittance, solar infrared direct
reflectance, solar infrared direct absorptance, total solar energy transmittance,
total solar infrared thermal energy transmittance.
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.
3 Terms and definitions
The terms and definitions defined in QC/T 1119 and the following ones apply to
this document.
The ratio of the radiant flux transmitted through the safety glazing material to
the incident radiant flux under specific geometric and spectral conditions.
4 Environmental conditions
Unless otherwise specified, the test shall be conducted under the following
environmental conditions.
5 Test apparatus
A spectrophotometer with integrating sphere. The range wavelength shall
include at least 300 nm~2500 nm.
6 Sample
Flat test pieces; or it is possible to cut the flattest part of curved products.
7 Test procedure
According to requirements of the equipment manufacturer, calibrate the
instrument. PUT in a clean sample. The sample is perpendicular to the incident
beam.
8 Data processing
The secondary thermal transmission coefficient q of single-layer glass is
calculated according to formula (11).
9 Expression of results
The report shall reflect the thickness, type, and structure of the sample. If
applicable, it shall also include the direction of the curved surface and the
instrument used.
Annex A
(Informative)
Structural changes of this Part compared with ISO 13837.2008
Compared with ISO 13837.2008, this Part has more structural adjustments. For
the comparison of specific clause-subclause numbers, see Table A.1.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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