GB/T 5137.4-2020 (GB/T5137.4-2020, GBT 5137.4-2020, GBT5137.4-2020) & related versions
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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
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
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.
This Part applies to the determination of solar characteristic 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.
GB/T 2680 Determination of light transmittance, solar direct transmittance,
total solar energy transmittance and ultraviolet transmittance for glass in
building and related glazing factors (GB/T 2680-1994, ISO 9050:1990, NEQ)
QC/T 1119 Road vehicles - Glazing materials - Terminology (QC/T 1119-
2019, ISO 3536:2016, MOD)
EN 673 Glass in building - Determination of thermal transmittance (U value)
- Calculation method
3 Terms and definitions
The terms and definitions defined in QC/T 1119 and the following ones apply to
this document.
3.1
Transmittance
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:
a) Ambient temperature: 20 °C±5 °C;
b) Atmospheric pressure: 8.60×104 Pa~1.06×105 Pa;
c) Relative humidity: 30%~60%.
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. A single piece of glass can be directly tested as a sample. Insulating
glass sample shall be split into single pieces for testing. During the test, the
sample shall be kept clean. If applicable, it shall mark the direction of the film
surface or curved surface of the sample; record the spectral transmittance and
spectral reflectance values of the sample.
8 Data processing
8.1 The solar ultraviolet transmittance TUV(380) is calculated according to
formula (1).
Where:
......
GB/T 5137.4-2001
GB
ICS 81.040.30
Q 30
National Standard
of the People’s Republic of China
Road Vehicles - Safety Glazing Materials -
Method for the Determination of Solar Transmittance
ISSUED ON. APRIL 29, 2001
IMPLEMENTED ON. OCTOBER 1, 2001
Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the
People's Republic of China
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Definitions ... 4
4 Determination of Solar Transmittance ... 5
5. Result Expression ... 6
Annex A ... 7
Annex B ... 8
Annex C ... 9
Annex D ... 10
Annex E... 11
Annex F ... 12
Foreword
This standard refers to ISO/DIS 13837 “Method for the Determination of Solar Transmittance of Road
Vehicles Safety Glazing Materials”. The technical content is the same as those of ISO/DIS 13837. There
are some changes on literal expression and compilation format.
Annex A, B, C, D, and E of this standard are normative.
Annex F is informative.
This standard was proposed by the State Bureau of Building Materials Industry.
This standard shall be under the centralized management of the Subcommittee on Safety Glazing of the
National Automobile Standardization Technical Committee.
The drafting organization of this standard. Institute of Glass and Special Glass Fiber of China Building
Materials Academy.
The main drafters of this standard. Wang Rui, Dai Lei, Mo Jiao, Yang Jianjun, and Zhang Dashun.
Road Vehicles - Safety Glazing Materials –
Method for the Determination of Solar Transmittance
1 Scope
This standard specifies the methods for the determination of solar ultraviolet transmittance, solar direct
transmittance, and solar total transmittance of the safety glazing materials of vehicles and other road
automotive vehicles.
This standard is applicable to the determination of solar transmittance of the safety glazing materials of
vehicles and other road automotive vehicles.
2 Normative References
The following standard contains provisions which, through reference in this text, constitute provisions of this
standard. At the time of publication, the editions indicated were valid. All standards are subject to revision,
and parties who agree on this standard are encouraged to investigate the possibility of applying the latest
editions of the standards indicated below.
GB/T 2680-1994 Determination of visible light transmittance, solar direct transmittance, solar total
transmittance, and ultraviolet transmittance of building glazing as well as parameters of relevant window
glazing (neq ISO 9050.1990)
3 Definitions
The following definitions are adopted by this standard.
3.1 Transmittance
It is the ratio of transmission flux and incidence flux, under specifically geometrical conditions and spectral
conditions.
3.2 Air Mass (Ratio)
It is the ratio of the air mass, between the observer and the sun, TO the air mass, when the observer stands on
the sea level and when the sun is directly above the observer, under normal atmosphere.
3.3 Solar Indirect Transmittance
It is the ratio of the energy which is radiated again into the vehicle after being absorbed by the safety glazing
materials, TO the absorbed solar radiation energy.
3.4 Convention A
......
| Standard ID | GB/T 5137.4-2020 (GB/T5137.4-2020) | | Description (Translated English) | Test methods of safety glazing materials used on road vehicles -- Part 4: Determination of solar characteristic | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | T34 | | Classification of International Standard | 43.040.60 | | Word Count Estimation | 11,154 | | 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., Jiangsu Tiemao Glass Co., Ltd., Xinyi Energy Saving Glass (Sichuan) Co., Ltd., Kangdexin Optical Film Materials (Shanghai) Co., Ltd., Xinyi Auto Glass (Shenzhen) Co., Ltd., Dongguan Benxun Automotive Glass 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 | | Standard ID | GB/T 5137.4-2001 (GB/T5137.4-2001) | | Description (Translated English) | Road vehicles - Safety glazing materials - Method for the determination of solar transmittance | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q30 | | Classification of International Standard | 81.040.30 | | Word Count Estimation | 12,129 | | Date of Issue | 2001-04-29 | | Date of Implementation | 2001-10-01 | | Quoted Standard | GB/T 2680-1994; | | Adopted Standard | ISO/DIS 13837; NEQ | | 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 | 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 and other road motor vehicles with a variety of safety glass solar ultraviolet transmittance, solar direct transmittance and total solar energy transmittance determination. This standard applies to: automotive safety glass and other road motor vehicles with a variety of safety glass solar transmittance determination. |
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