Cable flexure test

The optical cable flex test determines the ability of the optical cable to withstand repeated flexing during operation. This is a specialized test for specialty fiber optic cables, such as elevator cables or similar fiber optic cables. The purpose of the flexural test is to use these test data to check and improve the production process of optical fiber/optical cable factories, and to provide necessary parameters for the design of optical communication systems.
Zhongke Testing Reliability Experiment Center has the mechanical properties of various optical cables and provides professional flexural testing services for optical cables.

1. According to different transmission performance, distance and purpose, optical cables can be divided into user optical cables, local optical cables, long-distance optical cables and submarine optical cables.
2. According to the different conditions of transmission conductors and media, optical cables can be divided into metal-free optical cables, ordinary optical cables, and comprehensive optical cables (mainly used for railway dedicated network communication lines).
3. According to different laying methods, optical cables can be divided into pipeline optical cables, direct buried optical cables, aerial optical cables and underwater optical cables.
4. According to different structural methods, optical cables can be divided into flat structure optical cables, layered optical cables, skeleton optical cables, armored optical cables and high-density user optical cables.

1. The sample should pass through each pulley, and its ends should be loaded with heavy objects. The mass of these weights and the diameters of pulleys A and B (or other pulleys) shall be specified in the detail specification.
2. The deflection of the sample should be based on the number of cycles specified in the detailed specifications. A cycle is defined as the carriage moving from its starting position to one end of the beam, then moving in the opposite direction to the other end, and then back to the starting position. Make sure the fiber optic cable can move on the pulley.
3. The speed at which the trolley moves or the total time it takes to move back and forth should be specified in the detailed specifications.
4. The acceleration and deceleration of the car should be limited to avoid additional inertia loads.

GB/T 7424.21-2021 General Specification for Optical Cables Part 21: Basic Test Methods for Optical Cables Mechanical Performance Test Methods
IEC 60794-1-21: 2020 General Specification for Optical Cables Part 21: Basic Test Methods for Optical Cables Mechanical Performance Test Method
BS EN IEC 60794-1-2-2021 Optical fiber cables Part 1-2: General specifications Basic optical cable test procedures General rules
DS/EN IEC 60794-2-21-2021 General Specification for Optical Cables Part 21: Basic Test Methods for Optical Cables Mechanical Performance Test Method
LST EN 60794-1-21-2015 Optical cables Part 1-21: General specifications Basic test procedures for optical cables Mechanical test method
DIN EN 60794-1-21-2021 Optical fiber cables Part 1-21: General specifications Basic optical cable test procedures Mechanical test method
KS C IEC 60794-1-1-2007 Optical cables Part 1-1: General specifications General
GB/T 7424.2-2008 General specification for optical cables Part 2: Basic test methods for optical cables