Distributed optical fiber deformation tensile instrument and test method

Abstract

The invention relates to a distributed optical fiber deformation tensile instrument, and particularly relates to a deformation tensile device used for simulating practical applications of optical fibers at different tensile states. The distributed optical fiber deformation tensile instrument comprises a tensile system and an optical fiber bearing platform. The tensile system and the optical fiber bearing platform are connected. The defect that a conventional optical fiber deformation tensile test instrument cannot simply and accurately monitor the sensing performance of distributed optical fibers under multiple working conditions is overcome. The test device can simply and effectively control the loading progress, and can carry out crack opening development simulation, small strain monitoring and variable-angle variable-elevation multi-condition basic application research through a finally established movable smart tensile platform. The problems such as low optical fiber survival rate, long model making cycle, poor effect and high cost in some indoor simulation tests are avoided. The deformation mechanism and the combination mechanism of a distributed optical fiber monitoring technology under complex load conditions and at various operating state forms can be studied.

Description

technical field [0001] The invention relates to a distributed optical fiber deformation and stretching instrument and a testing method, in particular to a deformation and stretching device aiming at the practical application ability of the optical fiber in different stretching states and simulating the practical application. Background technique [0002] As a new type of sensing technology, distributed optical fiber sensing technology has been expanding its application fields. The good sensing performance of optical fiber is a necessary condition to ensure the health monitoring of optical fiber structure. The tensile deformation of optical fiber is the key to the reliability of sensing performance of distributed optical fiber monitoring system. important indicators. Due to the poor survival rate of optical fiber in actual engineering applications due to the performance of the material itself, it is impossible to track and observe the process of deformation and damage of opt...

AI Technical Summary

Problems solved by technology

At present, the tensile servo testing machine for optical fiber is expensive, complicated to operate, takes up a lot of space, and can only perform a single material performance tensile test. It is difficult to accurately perform a tensile test with monitoring capabilities, especially it cannot simulate multiple working conditions in practical applications. The deformation process of optical fiber hinders more basic research and application promotion

At this stage, the equipment and testing technology for diversified, systematic, and multi-working-condition precise tensile tests are still blank in conjunction with distributed optical fiber monitoring technology

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