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GB/T 1965-2023: Porous ceramics - Test method for flexural strength at room temperature
Status: Valid GB/T 1965: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 1965-2023 | English | 229 |
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Porous ceramics - Test method for flexural strength at room temperature
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GB/T 1965-2023
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| GB/T 1965-1996 | English | 129 |
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Test method for cross-bending strength of porous ceramics
| Obsolete |
GB/T 1965-1996
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| GB 1965-1980 | English | 199 |
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Test method for bending strength of porous ceramics
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GB 1965-1980
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PDF similar to GB/T 1965-2023
Basic data | Standard ID | GB/T 1965-2023 (GB/T1965-2023) | | Description (Translated English) | Porous ceramics - Test method for flexural strength at room temperature | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q30 | | Classification of International Standard | 81.060.30 | | Word Count Estimation | 11,188 | | Date of Issue | 2023-11-27 | | Date of Implementation | 2024-06-01 | | Older Standard (superseded by this standard) | GB/T 1965-1996 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 1965-2023: Porous ceramics - Test method for flexural strength at room temperature---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 81:060:30
CCSQ30
National Standards of People's Republic of China
Replace GB/T 1965-1996
Test method for room temperature flexural strength of porous ceramics
atroomtemperature,MOD]
Published on 2023-11-27
2024-06-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Foreword
This document complies with the provisions of GB/T 1:1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents"
Drafting:
This document replaces GB/T 1965-1996 "Test Method for Flexural Strength of Porous Ceramics": Compared with GB/T 1965-1996, except for the structure
In addition to adjustments and editorial changes, the main technical changes are as follows:
---Changed the requirements for instruments and equipment (see Chapter 4, Chapter 2 of the:1996 edition);
---Changed the requirements for samples (see Chapter 5, Chapter 3 of the:1996 edition);
---Added steps to measure the distance between the upper and lower indenter (see 6:3);
---Changed the movement speed (see 6:4, 4:2 of the:1996 version);
---Added requirements for force-displacement curve (see 6:5);
---Added the calculation of the standard deviation and dispersion coefficient of bending strength (see 7:2):
This document has been modified to adopt ISO 14610:2012 "Fine Ceramics (Advanced Ceramics, Advanced Technology Ceramics) Bending Strength of Porous Ceramics at Room Temperature"
Degree Test Methods":
Compared with ISO 14610:2012, this document has many structural adjustments: A comparison list of structural number changes between the two documents:
See Appendix A:
Compared with ISO 14610:2012, this document has many technical differences: Vertical text is used in the outer margin of the clauses involved:
Single lines (|) are marked: A list of these technical differences and their causes is provided in Appendix B:
The following editorial changes have been made to this document:
---In order to coordinate with the existing standards, the name of the standard is changed to "Test Method for Room Temperature Flexural Strength of Porous Ceramics";
---Deleted the note 4:2 in ISO 14610:2012;
---Deleted the note 6:2 in ISO 14610:2012;
---Changed the symbol of the bending strength of 7:1 in ISO 14610:2012, replacing the original σf with σB;
---Changed the symbol of sample thickness of 7:1 in ISO 14610:2012, replacing the original d with h;
---Changed the sign of the arithmetic mean of the flexural strength of 7:2 in ISO 14610:2012, replacing the original x with σ:
Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents:
This document is proposed by China Building Materials Federation:
This document is under the jurisdiction of the National Industrial Ceramics Standardization Technical Committee (SAC/TC194):
This document was drafted by: Shandong Industrial Ceramics Research and Design Institute Co:, Ltd:, Guangxi Biqingyuan Environmental Protection Investment Co:, Ltd:, Sinoma High-tech Materials
Material Co:, Ltd:, Sanxiang New Material Co:, Ltd:, Dongfang Electric Group Dongfang Turbine Co:, Ltd:, Zhengzhou Zhengbiao Testing Technology Co:, Ltd:
Co:, Ltd:, Guangdong Advanced Ceramic Materials Technology Co:, Ltd:, Henan Academy of Sciences Institute of Chemistry Co:, Ltd:, Xi'an Xinyao Ceramic Composite Materials
Materials Co:, Ltd:, Shandong Guoca Functional Materials Co:, Ltd:, and Zhejiang Tianxingjian Water Co:, Ltd:
The main drafters of this document: Zhao Shikai, Song Tao, Luan Qiang, Qin Yulan, Xu Chuanwei, Ma Tengfei, Yang Qiangwen, Fan Dongjie, Gong Xiufang, Cong Xiaotong,
Chen Wensong, Zhang Xiaojiao, Wang Wei, Zhang Jiumei, Tang Yudong, Ou Hailong, Zhang Yong, Chen Changzhu, Zhang Zhen, Qiu Jihua, Zhang Xi, Xing Jing, Tian Zhenbang, Zhang Xiaoli,
He Jiang:
This document was first published in:1996 and this is the first revision:
Test method for room temperature flexural strength of porous ceramics
1 Scope
This document specifies the test methods, instruments and equipment, samples, test procedures, results and calculations for measuring the flexural strength of porous ceramics at room temperature:
experiment report:
This document is applicable to the determination of the room temperature flexural strength of porous ceramics:
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to
this document:
GB/T 6569 Test method for flexural strength of fine ceramics (GB/T 6569-2006, ISO 14704:2000, MOD)
GB/T 16491 Electronic Universal Testing Machine
GB/T 17991 Terminology for fine ceramics (GB/T 17991-2009, ISO 20507:2003, MOD)
GB/T 21389 Verniers, band meters and digital calipers
3 Terms and definitions
The terms and definitions defined in GB/T 17991 and the following apply to this document:
3:1
Porous ceramicsporousceramics
Ceramic materials with pore diameters ranging from 0:05μm to 100μm and apparent porosity ranging from 25% to 90%:
3:2
The maximum stress when the sample breaks under the bending load formed by the two lower fulcrums and the two upper indenter:
4 Instruments and equipment
4:1 Testing machine
The testing machine should comply with the regulations of GB/T 16491: The testing machine level should be level 1 or better, and can automatically record load and displacement or measure
The relationship curve of trial time:
4:2 Fixture
The test fixture adopts a structure similar to the four-point 1/4 bend in GB/T 6569: The schematic diagram of the test fixture is shown in Figure 1: to prevent
For specimens that are torsionally deformed, half or fully adjustable clamps should be used: The elastic modulus of the pressure head support roller should be greater than 140GPa, and no plasticization should occur during the test:
Sexual deformation or breakage: The outer span length L is 60mm, the inner span length l is 30mm, the radius of curvature of the indenter is 2mm~3mm, and the surface is rough
The degree Ra does not exceed 0:40μm:
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