Smailov Nurzhigit, Koshkinbayev Sauletbek, Aidana Bazarbay, Kuttybayeva Ainur, Tashtay Yerlan, Aziskhan Amir, Arseniev Dmitry, Kiesewetter Dmitry, Krivosheev Sergey, Magazinov Sergey, Malyugin Victor, Sun Changsen
Department of Electronics, Telecommunications and Space Technologies, Satbayev University, Almaty 050013, Kazakhstan.
Department of IT and Telecommunications, Miras University, Shymkent 160012, Kazakhstan.
Sensors (Basel). 2024 Sep 25;24(19):6194. doi: 10.3390/s24196194.
The work is devoted to the consideration of methods for determining the strain of objects using fiber Bragg gratings under a high-frequency vibration or pulsed mechanical action, which is difficult to perform using widespread methods and devices. The methods are based on numerical processing of the time dependence of the radiation power reflected from the fiber Bragg grating at various wavelengths, which makes it possible to measure strain parameters in a wide range of magnitude and frequencies. The efficiency of the proposed methods is demonstrated by numerical simulation. It is shown that it is possible to restore the strain dependence on time in the range ±1000 μϵ or more from simultaneously measured power dependencies reflected by the fiber Bragg grating using common fiber-optic components. The case of sequential registration of reflected radiation power at different wavelengths to determine the probability density of the distribution of the strain values is also considered. The results of signal processing obtained both by numerical simulation and experimentally for the case of a linear vibration are presented. The technical problems of using the proposed methods are discussed.
这项工作致力于研究在高频振动或脉冲机械作用下，使用光纤布拉格光栅确定物体应变的方法，而使用广泛的方法和设备难以进行此项工作。这些方法基于对光纤布拉格光栅在不同波长下反射的辐射功率随时间变化的数值处理，这使得在很宽的量级和频率范围内测量应变参数成为可能。通过数值模拟证明了所提出方法的有效性。结果表明，使用普通光纤组件，从光纤布拉格光栅同时测量的功率依赖性中，可以恢复在±1000 μϵ或更大范围内的应变随时间的依赖性。还考虑了在不同波长下顺序记录反射辐射功率以确定应变值分布的概率密度的情况。给出了线性振动情况下通过数值模拟和实验获得的信号处理结果。讨论了使用所提出方法的技术问题。
