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GB/T 15972.31-2021 English PDF

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US$439.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 15972.31-2021: Specifications for optical fibre test methods - Part 31: Measurement methods and test procedures for mechanical characteristics - Tensile strength
Status: Valid

GB/T 15972.31: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 15972.31-2021	439	Add to Cart	5 days	Specifications for optical fibre test methods - Part 31: Measurement methods and test procedures for mechanical characteristics - Tensile strength	Valid
GB/T 15972.31-2008	239	Add to Cart	3 days	Specifications for optical fibre test methods -- Part 31: Measurement methods and test procedures for mechanical characteristics -- Tensile strength	Obsolete

Similar standards

YD/T 2554.1 GB/T 9771.1 GB/T 20186.1 GB/T 15972.40 GB/T 15972.33 GB/T 15972.32

Basic data

Standard ID: GB/T 15972.31-2021 (GB/T15972.31-2021)
Description (Translated English): Specifications for optical fibre test methods - Part 31: Measurement methods and test procedures for mechanical characteristics - Tensile strength
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: M33
Word Count Estimation: 22,266
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 15972.31-2021: Specifications for optical fibre test methods - Part 31: Measurement methods and test procedures for mechanical characteristics - Tensile strength

---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.
Specifications for optical fibre test methods - Part 31.Measurement methods and test procedures for mechanical characteristics - Tensile strength ICS 33.180.10 M33 National Standards of People's Republic of China Replace GB/T 15972.31-2008 Optical fiber test method specification part 31. Methods of measuring mechanical properties and Tensile strength of test procedure (IEC 60793-1-31.2019, Opticalfibres-Part 1-31.Measurement Released on 2021-08-20 and implemented on 2022-03-01 State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Foreword Ⅰ Introduction Ⅲ 1 Scope 1 2 Normative references 1 3 Method overview 1 4 Device 1 5 Sample preparation 3 6 Procedure 4 7 Calculation 4 8 Results 6 Appendix A (informative appendix) Typical dynamic tensile strength test device 8 Appendix B (informative appendix) Optical fiber clamping guidelines 10 Appendix C (Informative Appendix) Stress Rate Guidelines 14 Appendix D (informative appendix) "Long sample" measurement method 15 Reference 16

Foreword

GB/T 15972 "Specifications for Optical Fiber Test Methods" consists of several parts, and its structure is as follows. ---Part 10 General Principles of Measurement Methods and Test Procedures; ---Part 20~Part 29.Measurement methods and test procedures of dimensional parameters; ---Part 30~Part 39.Measurement methods and test procedures of mechanical properties; ---Part 40~Part 49.Measurement methods and test procedures for transmission characteristics; --- Part 50 ~ Part 59.Environmental performance measurement methods and test procedures. Among them, GB/T 15972.3× consists of the following parts. ---Part 30.Measurement methods and test procedures of mechanical properties, optical fiber screening test; ---Part 31.Measuring methods of mechanical properties and test procedures for tensile strength; ---Part 32.Measurement methods and test procedures for mechanical properties, coating peelability; ---Part 33.Measurement methods of mechanical properties and test procedures for stress corrosion sensitivity parameters; --- Part 34.Measurement methods and test procedures for mechanical properties of optical fiber warpage. This part is part 31 of GB/T 15972. This section was drafted in accordance with the rules given in GB/T 1.1-2009. This part replaces GB/T 15972.31-2008 "Specification for Optical Fiber Test Methods Part 31.Measurement Methods and Tests of Mechanical Properties Compared with GB/T 15972.31-2008, the main technical changes are as follows. ---Added the introduction; ---Modified the scope of application and added Class C and Class D single-mode fibers (see Chapter 1, Chapter 1 of the.2008 edition); ---Added equipment requirements (see Chapter 4); ---Added sample preparation requirements (see Chapter 5); ---Added the requirements of the procedure (see Chapter 6); ---Added calculation method (see Chapter 7); ---Added a typical dynamic tensile strength test device (see Appendix A); ---Added fiber clamping guidelines (see Appendix B); ---Added the stress rate guidelines (see Appendix C); ---Added the "long sample" measurement method (see Appendix D). This part uses the redrafting method to modify and adopt IEC 60793-1-31.2019 ``Optical Fiber Part 1-31.Measurement Methods and Test Procedures tensile strength". Compared with IEC 60793-1-31.2019, the structural changes of this part are as follows. ---Chapter 3 "Terms and Definitions" was deleted, and Chapter 3 was changed to "Method Overview", and the content of Chapter 4 was adjusted to that of Chapter 6. Note, resulting in the postponement of subsequent chapters and articles; --- Incorporate Chapter 10 "Specification Information" into Chapter 8 "Results"; ---Informative Appendix D has been added. The technical differences between this part and IEC 60793-1-31.2019 and the reasons are as follows. ---Regarding normative reference documents, this section has made adjustments with technical differences to adapt to my country's technical conditions and adjustments. The situation is collectively reflected in Chapter 2 "Normative Reference Documents", and the specific adjustments are as follows. ● Replace IEC 60793-1-20 with the modified GB/T 15972.20-2021; ● Added reference to GB/T 15972.10-2021 and GB/T 15972.21-2008. ---In the "Scope" chapter, the measurement applicable to Class D fiber has been added; --- Deleted Chapter 3 "Terms and Definitions" of International Standards; ---Change the hazardous content in Chapter 4 of the International Standard to the note in Chapter 6; ---Change the example in the international standard 5.2 to the content of the clause; ---Modified the test procedure of 6.2; ---Corrected the error of formula (6); ---Move the "long sample" test method in International Standard 6.2 to the informative Appendix D; ---The median fracture stress and the 15th percentile value of fracture stress in the IEC file correspond to the domestic practice of GB/T 9771 and amended to The tensile strength at the Weibull probability level of 50% and the tensile strength at the Weibull probability level of 15%. This section has made the following editorial changes. ---Change the standard name to "Specification for Optical Fiber Test Methods Part 31.Measurement Methods and Test Procedures for Mechanical Properties Spend"; ---Added the note in 6.3; ---Adjusted references. Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying these patents. This part was proposed by the Ministry of Industry and Information Technology of the People's Republic of China. This part is under the jurisdiction of the National Communication Standardization Technical Committee (SAC/TC485). Drafting organizations of this section. China Information and Communication Technology Group Co., Ltd., China Mobile Communications Group Design Institute Co., Ltd., YOFC Optical Cable Co., Ltd. The main drafters of this section. Liu Cheng, Hu Guyue, Li Jing, Wang Dongxiang, Dai Guangchong, Qi Qingqing, Xu Jiangbo, He Maoyou, Zhou Huizhi. The previous releases of the standards replaced by this part are as follows. ---GB/T 15972.31-2008.

Introduction

The fracture stress distribution can be used to predict fiber reliability under different conditions. IEC TR62048.2014 explains the mathematics of this method principle. The test is restricted by the following conditions. 1) Differences in fiber samples, such as. coating, manufacturing time, diameter; 2) Gauge length, that is, the length of the test part; 3) Stress or strain rate; 4) Test environment; 5) Pretreatment or aging treatment; 6) Sample size. The test method is to measure the strength of the optical fiber at a specified constant strain rate. This is a destructive test and cannot replace fiber screening test. The method in this part is used for the gauge length of 0.5m and the specified maximum constant strain rate of 25%/min. Fiber with a tensile strength greater than 3.1GPa (450kpsi) at a rate level of 50%. For the resistance to tension at the Weibull probability level of 50% For low-degree optical fibers, the method in this part is not accurate enough. Note. kpsi=thousand pounds per square inch. There are two typical lengths for testing, one is "short sample", the length is about 1m; the other is "long sample", the length is 10m~ 20m, the sample size is 15~30. The test environment, any pretreatment or aging will affect the test results. There is no universally recognized model that can convert an environment The result is extrapolated to another environment. However, for the fracture stress at a given stress or strain rate, as the relative humidity increases, the fracture stress reduce. Under certain temperature and humidity conditions for one or two days of pretreatment, it can be observed that the parameters of the measured intensity distribution may be Increases may also decrease. The test is based on the theory of fracture mechanics of brittle materials and the power law of defect growth (see IEC TR62048.2014). Although there are Other theories, but the fracture mechanics based on the power law theory is the most universally recognized. Typical samples include fibers that have not been intentionally damaged or environmentally aging. A typical fiber has a nominal diameter of 125μm, 250μm Or smaller diameter acrylate coating. This section gives the default conditions for this typical sample, which can include optional coatings, environmental aging Optical fiber, deliberately damaged or frayed optical fiber. It also provides relevant guidelines for typical sample requirements. Optical fiber test method specification part 31. Methods of measuring mechanical properties and Tensile strength of test procedure

1 Scope

This part of GB/T 15972 specifies the test method for determining the tensile strength value of optical fiber samples. Optical fiber before the cable. The purpose of this section is to establish a unified technical requirement for the measurement of the tensile strength of the optical fiber's mechanical properties. This section applies to the measurement of A1, A2, and A3 multimode fibers and B, C, and D single-mode fibers.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document. GB/T 15972.10-2021 Optical fiber test method specification Part 10.General rules of measurement methods and test procedures (IEC 60793-1-1.2017, MOD) GB/T 15972.20-2021 Optical fiber test method specification Part 20.Measurement method and test procedure of dimensional parameters Optical fiber Geometric parameters (IEC 60793-1-20.2014, MOD) GB/T 15972.21-2008 Optical fiber test method specification Part 21.Dimensional parameter measurement method and test procedure coating Layer geometric parameters (IEC 60793-1-21.2001, MOD)

3 Method overview

The test methods in this section are used to determine the dynamic tensile strength of optical fiber samples. Nominally constant across the length and cross-section of the fiber Apply uniform and controllable stress or strain at a rate until fiber breakage occurs. The distribution of the tensile strength value of a given optical fiber is related to the length of the sample Degree, loading rate and environmental conditions are closely related. This test can be used to verify the strength statistics of the optical fiber. Use statistical quality Report results in a controlled manner. Under normal circumstances, the test is performed after the sample is processed for temperature and humidity. In some cases, it can also Without pretreatment, the tensile strength value is directly measured under ambient temperature and humidity conditions. For details of the calculation method, see IEC TR62048.2014. If the test is performed after the treatment is completed, the result should be the same number of samples and the same test conditions (that is, the rate And gauge length) to compare with the unprocessed results. The distribution curve of the test results and the sample size of the fiber to be tested and the standard of the test sample The distance is related to the length. Note. In the case of a fracture near the clamp area or the support wheel, the test value is not included in the statistical distribution and needs to be reported separately. The standard atmospheric environmental conditions of the test meet the requirements of GB/T 15972.10-2021.

4 equipment

4.1 Overview This chapter specifies the basic requirements for dynamic tensile strength testing equipment. There are many configurations to meet these requirements. Listed in Appendix A ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 15972.31-2021_English be delivered?

Answer: Upon your order, we will start to translate GB/T 15972.31-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 15972.31-2021_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 15972.31-2021_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 15972.31-2021?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 15972.31-2021 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.