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Test methods for continuous silicon carbide fiber -- Part 4: Tensile properties of filament yarn
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Basic data
| Standard ID | GB/T 34520.4-2017 (GB/T34520.4-2017) |
| Description (Translated English) | Test methods for continuous silicon carbide fiber -- Part 4: Tensile properties of filament yarn |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | V13 |
| Classification of International Standard | 49.025.99 |
| Word Count Estimation | 10,123 |
| Date of Issue | 2017-11-01 |
| Date of Implementation | 2018-05-01 |
| Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China |
GB/T 34520.4-2017: Test methods for continuous silicon carbide fiber -- Part 4: Tensile properties of filament yarn
---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.
Test methods for continuous silicon carbide fiber-Part 4. Tenside
ICS 49.025.99
V13
National Standards of People's Republic of China
Continuous silicon carbide fiber test method
Part 4. Tensile properties of strands
Part 4.Tensilepropertiesoffilamentyarn
Posted.2017-11-01
2018-05-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Foreword
GB/T 34520 "continuous silicon carbide fiber test method" is divided into seven parts.
--- Part 1. Beam wire sizing rate;
--- Part 2. Single fiber diameter;
--- Part 3. Line density and density;
--- Part 4. Beam tensile properties;
--- Part 5. Tensile properties of single fibers;
--- Part 6. Resistivity;
--- Part 7. High temperature strength retention.
This section GB/T 34520 Part 4.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This part is proposed by China Aerospace Science and Technology Corporation.
This part of the National Aerospace Technology and Application Standardization Technical Committee (SAC/TC425) centralized.
This part of the drafting unit. National University of Defense Technology.
The main drafters of this section. Wang Jun, Wang Hao, Jane Branch, Wang Yifei, Song Yongcai, Wang Yingde, Shao Changwei, Gou Yan Zi, Wang Xiaowu, Wang Bing,
Tang 祚 Jiao.
Continuous silicon carbide fiber test method
Part 4. Tensile properties of strands
1 Scope
GB/T 34520 provisions of this part of the test of continuous silicon carbide (siliconcarbide, SiC) fiber bundle tensile properties of the test ring
Habitat, test equipment and materials, samples and their preparation, test procedures, calculation of test results and test reports.
This section applies to continuous SiC fiber bundle tensile strength, tensile modulus and elongation at break test.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
For all undated references, the latest edition (including all amendments) applies to this document.
GB/T 1446 fiber-reinforced plastics performance test methods General
Textile and textile materials - Performance and test terms - Part 3. General
GB/T 4146.3 Textiles chemical fibers Part 3. Inspection terms
GB/T 8170 rounded repair rules and limit values of the representation and judgment
GB/T 18374 Reinforcement terms and definitions
Test methods for continuous silicon carbide fibers - Part 1. String sizing rate
Methods of test for continuous silicon carbide fibers - Part 3. Linear density and density
3 Terms and definitions
GB/T 3291.3, GB/T 4146.3, GB/T 18374 and GB/T 34520.1-2017 defined terms and definitions apply to this
file.
4 test principle
The tensile strength and tensile modulus of the continuous SiC fiber bundle are determined by stretching the fiber bundle after the impregnated resin is cured
Damage to determine. The tensile strength is obtained from the breaking load divided by the cross-sectional area of the continuous SiC fiber bundle, and the tensile modulus of elasticity is the amount of change in stress
And the corresponding strain change ratio. Elongation at break is the ratio of the elongation at elongation to the gauge length at beam load loading up to the maximum load.
5 test environment
5.1 Standard test conditions According to the provisions of GB/T 1446, the temperature of 23 ℃ ± 2 ℃, relative humidity of 50% ± 10%.
5.2 In other environmental conditions for testing, the test environment temperature and relative humidity should be specified in the test report.
6 test equipment and materials
6.1 test machine
Testing machine should meet the provisions of GB/T 1446. It is recommended to use a constant speed tensile testing machine with a pneumatic clamp, the range of not less than
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