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GB/T 15972.34-2021: Specifications for optical fibre test methods - Part 34: Measurement methods and test procedures for mechanical characteristics - Fibre curl
Status: Valid GB/T 15972.34: Evolution and historical versions
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| GB/T 15972.34-2021 | English | 299 |
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Specifications for optical fibre test methods - Part 34: Measurement methods and test procedures for mechanical characteristics - Fibre curl
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GB/T 15972.34-2021
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| GB/T 15972.34-2008 | English | 519 |
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Specifications for optical fibre test methods -- Part 34: Measurement methods and test procedures for mechanical characteristics -- Fibre curl
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GB/T 15972.34-2008
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PDF similar to GB/T 15972.34-2021
Basic data | Standard ID | GB/T 15972.34-2021 (GB/T15972.34-2021) | | Description (Translated English) | Specifications for optical fibre test methods - Part 34: Measurement methods and test procedures for mechanical characteristics - Fibre curl | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | M33 | | Word Count Estimation | 16,110 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 15972.34-2021: Specifications for optical fibre test methods - Part 34: Measurement methods and test procedures for mechanical characteristics - Fibre curl
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Specifications for optical fibre test methods-Part 34.Measurement methods and test procedures for mechanical characteristics-Fibre curl
ICS 33.180.10
M33
National Standards of People's Republic of China
Replace GB/T 15972.34-2008
Optical fiber test method specification part 34.mechanical properties
Measurement method and test procedure Optical fiber warpage
(IEC 60793-1-34.2006, Opticalfibres-Part 1-34.Measurement
Released on 2021-04-30 and implemented on 2021-11-01
State Administration of Market Supervision and Administration
Issued by the National Standardization Management Committee
Table of contents
Foreword Ⅲ
1 Scope 1
2 Normative references 1
3 Method overview 1
4 Device 1
5 Sample preparation 2
6 Procedure 2
7 Calculation 2
8 Results 2
Appendix A (Normative Appendix) Method A---Measure fiber warpage with side-view microscopy 4
Appendix B (Normative Appendix) Method B---Measure fiber warpage by laser beam scattering method 8
Appendix C (informative appendix) Derivation of fiber warpage circle model 10
Foreword
GB/T 15972 "Specifications for Optical Fiber Test Methods" consists of several parts, and its expected structure and corresponding international standards are.
---Part 10.General principles of measurement methods and test procedures (corresponding to IEC 60793-1-1);
---Part 20~Part 29.Measurement methods and test procedures of dimensional parameters (corresponding to IEC 60793-1-20 to IEC 60793-1-29);
---Part 30~Part 39.Measurement methods and test procedures of mechanical properties (corresponding to IEC 60793-1-30 to IEC 60793-1-39);
---Part 40~Part 49.Measurement methods and test procedures of transmission characteristics (corresponding to IEC 60793-1-40 to IEC 60793-1-49);
---Part 50~Part 59.Environmental performance measurement methods and test procedures (corresponding to IEC 60793-1-50 to IEC 60793-1-59).
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 34 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 15972.34-2008 "Specification for Optical Fiber Test Methods Part 34.Measurement Methods and Tests of Mechanical Properties
Procedure Fiber Warping." Compared with GB/T 15972.34-2008, the main technical changes in this part are as follows.
---Modified the step length of the rotating fiber (see A.3.3, B.3.3, 6.2, A.3.2, B.3.2 of the.2008 edition);
---Modified the name of the calculation method of the deviation, and the calculation formula of the Fourier fitting method in the calculation method (see A.4.1, A.4.2,
The.2008 version of A.4.1, A.4.2);
---Added the calculation process of the intermediate parameter SA of the optical fiber warpage measured by the laser beam scattering method (see B.4.1, B.4.2);
---Added the formula derivation process of laser beam scattering method to measure fiber warpage (see C.2).
This part uses the redrafting method to modify and adopt IEC 60793-1-34.2006 "Optical Fiber Part 1-34.Measurement Methods and Test Procedures
Optical fiber warpage.
Compared with IEC 60793-1-34.2006, the structural changes of this part are as follows.
--- Due to the addition of "Chapter 3 Method Overview" in accordance with the format and presentation requirements of my country's standards, the International Standard Chapter 3,
Chapter 4 and Chapter 5 have been extended to Chapter 4, Chapter 5, and Chapter 6;
---Adjust International Standard 5.3 to Chapter 7 of this Part;
--- The contents of Chapters 7 and 8 of the International Standard are merged into Chapter 8 of this Part.
The technical differences between this part and IEC 60793-1-34.2006 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 (all parts) with GB/T 15972.10 which is modified to adopt international standards.
---The chapter "Method Overview" is added, and part of Chapter 1 of the International Standard is included in this chapter (see Chapter 3);
--- Modify the position identification of the center line sensor in Figure B.1, and correct ΔZ to ΔS;
---Correct ΔZ in formula (C.5) and formula (C.10) to ZG, and correct ΔZω21 in formula (C.13) to ZGω21; change the formula
(C.13) Medium ΔZ
Z2G
r2c
Corrected to Z
r2c
--- Modify the "=" in the formulas (C.13), (C.14), (C.15), (C.16) in Appendix C to "≈".
This section has made the following editorial changes.
---In order to be consistent with the existing standard system, the standard name is changed to "Optical Fiber Test Method Specification Part 34.Measurement Method of Mechanical Properties
Methods and test procedures for optical fiber warpage.
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 unit of this section. Fiberhome Technology Group Co., Ltd.
The main drafters of this section. Liu Cheng, Wang Dongxiang, Hu Guyue, Wei Zhongcheng, Hu Peng, Hu Guohua.
The previous releases of the standards replaced by this part are as follows.
---GB/T 15972.34-2008.
Optical fiber test method specification part 34.mechanical properties
Measurement method and test procedure Optical fiber warpage
1 Scope
This part of GB/T 15972 gives the test method for measuring the warpage or intrinsic radius of curvature of uncoated optical fiber, and specifies the test device,
Uniform requirements for sample preparation, procedures, calculations, and results.
This section applies to A1, A2, A3 multi-mode fiber and B single-mode fiber.
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 Optical fiber test method specification Part 10.General rules of measurement methods and test procedures (GB/T 15972.10-
2021, IEC 60793-1-1.2017, MOD)
3 Method overview
When using passive alignment fusion splicers or active alignment batch fusion splicers, fiber warpage is an important parameter that affects splice loss.
Appendix A and Appendix B respectively give two test methods for measuring the warpage (or radius of curvature) of uncoated optical fibers.
---Method A. Side view microscopy technology;
---Method B. Laser beam scattering technology.
Both methods measure the radius of curvature of the uncoated fiber by determining the amount of deviation that the unsupported fiber end produces when it rotates around the fiber axis.
(Warpage). Method A uses image or digital video methods to determine the amount of deviation, while method B uses a line sensor to measure the phase of a laser beam.
The maximum deviation from the reference laser beam.
By measuring the deviation of the optical fiber rotating around a fixed axis, and understanding the geometric meaning of the measuring device, the radius of curvature of the optical fiber can be passed
A simple circle model is calculated, and the derivation formula is shown in Appendix C.
Method A is the benchmark test method (RTM), used as a referee test.
The environmental conditions of the test should meet the requirements of GB/T 15972.10.
4 devices
4.1 Principle
Place one end of the uncoated optical fiber in the fiber clamp, and make the end freely extend out of the clamp for a specified hanging distance, typical hanging distance
The distance is generally 10mm~20mm. If the hanging distance in the device is designed to be greater than the typical hanging distance, consideration should be given to avoiding rotation and gravity guidance.
Caused by excessive influence. Rotate the optical fiber and measure the deviation of the suspended point position relative to the reference position to obtain the radius of curvature rc.
Detailed descriptions related to the two methods are given in Appendix A and Appendix B. The common technical requirements of the device are given in 4.2~4.5.
4.2 Fiber Clamp
Use a suitable clamp to keep the fiber on a constant axis and allow the fiber to rotate 360°. The fixture can consist of a V-shaped groove such as
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