Жарияланымдар / Публикации

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  • Некоторые метрики заблокированы вашими 
    Тип записи:Публикация,
    Modeling and Designing Subsystem of Fiber-Optic Sensors for Diagnostics and Control of Mechanical Structures Health in Differential System
    (2023-09-13)
    Aliya Kalizhanova
    ;
    ;
    Айнур Козбакова
    ;
    ;
    The article examines the modeling and design of a subsystem of fiber-optic sensors for the diagnosis and monitoring of the operability of mechanical structures in a differential system. In this study, the definition of the problem was developed by a mathematical model of the FBG using the transfer matrix method and using this method, a simulation model for the sensor was solved. The transfer matrix method makes it possible to assign spectral characteristics of optical components based on the theory of coupled modes and the matrix description of an electromagnetic wave passing through an optical fiber. The simulation is performed by solving the equations of coupled modes in MatLab (Simulink) using the transfer matrix method, which provides the basis for the relationship between the controlled modes. The method can take into account refractive index profiles of arbitrary shape and be implemented in a tool called MatLab (Simulink). As a result of the study, optimization was carried out, where light is shed on the effectiveness of the proposed scheme for analyzing deformation measurements, obtaining a linear response. It's inventory-friendly, fast, and open-source. The main contribution of the study is the developed simulation model of the subsystem for fiber Bragg sensors, which shows that the power of the side lobes is completely minimized in the Gaussian reflection spectra of FBG, and the results of MatLab (Simulink) are in excellent agreement with the results of the optical lattice. MatLab (Simulink) has a wide range of applications in modeling various optical fibers for various fields such as visualization, communication, material processing and remote sensing.
  • Некоторые метрики заблокированы вашими 
    Тип записи:Публикация,
    TESTING OF AN OPTOELECTRONIC SYSTEM OF DISTRIBUTED FIBER-OPTIC SENSORS FOR MONITORING AND DIAGNOSING THE STATE OF BUILDING STRUCTURES
    (Mukhametzhan Tynyshbayev ALT University, 2023-04-28)
    Aliya Kalizhanova
    ;
    Айнур Козбакова
    ;
    ; ;
    Shyngys Kenshimov
    This article discusses distributed systems of fiber-optic sensors based on Bragg fiber gratings for monitoring and diagnosing the state of building structures, which allow periodic measurements and monitoring of the state of engineering structures, assess trends in their technical condition and thereby facilitate the identification of possible threats. The paper presents the results of experimental tests of an optoelectronic system of distributed fiber-optic sensors based on fiber Bragg gratings. The distribution of deformations has been estimated. The results of the study show that shape changes can be reliably detected using all installation methods and fiber optic sensors before significant cracking occurs in the cement.
    Цитирования (OpenAlex) 1Цитирования (OpenCitations) 1
  • Некоторые метрики заблокированы вашими 
    Тип записи:Публикация,
    Research of a Fiber Sensor Based on Fiber Bragg Grating for Road Surface Monitoring
    (Multidisciplinary Digital Publishing Institute, 2023-05-31)
    Гулжан Кашаганова
    ;
    Айнур Козбакова
    ;
    ;
    Гани Сергазин
    ;
    Күлжан Тогжанова
    Road infrastructure is a key public asset because it benefits the social and economic development of any country. It plays an important role for the development of the industrial complex, the production sector and the road surfaces of transport roads should be of high quality, have a long service life. Road infrastructure, as well as all infrastructure, requires preservation, maintenance and repair. There are special requirements for the roadway that must be observed during construction or repair. This article is devoted to a detailed study of the use of fiber optics sensors (FOS) based on the fiber Bragg grating (FBG) for road surface monitoring. Such a fiber sensor consisting of a fiber Bragg grid and a pair of grids can offer the possibility of simultaneous measurement of deformation and temperature for monitoring the pavement. Temperature and deformation measurements were carried out by installing a sensor on the surface of a made asphalt sample. The built-in fiber sensor based on FBG provides important information about how the pavement structure can withstand the load, subsidence of soil, timely implement road safety and stability measures evaluate and predict the service life of the pavement. The results of the study showed that the synchronicity, repeatability and linearity of the characteristics of the fiber sensor are excellent. The difference between the experimental and theoretical results is about 7%. Thus, based on the results of the obtained data, the fiber sensor on the FBG can be used for monitoring, designing road surfaces and in general transport infrastructure.
    Цитирования (OpenAlex) 39Цитирования (OpenCitations) 22
  • Некоторые метрики заблокированы вашими 
    Тип записи:Публикация,
    ТАЛШЫҚТЫ БРЭГГ ТОРЛАРЫН ҚОЛДАНАТЫН КАБЕЛЬ ТЕМПЕРАТУРАСЫН ӨЛШЕУ ЖҮЙЕСІ
    (Mukhametzhan Tynyshbayev ALT University, 2023-08-25)
    Aliya Kalizhanova
    ;
    Айнұр Козбакова
    ;
    ; ;
    Shyngys Kenshimov
    Бұл мақалада талшықты Bragg торларын қолданатын кабель температурасын өлшеу жүйесі қарастырылады. Әуе желісінің кабелінің температурасын өлшеу және ұзарту жүйесі екі арматурадан тұратын электр желісінің сымын қамтиды, оның ішінде фитингтерде ойықтар бар, оның ішінде белгілі бір ұзындығы бар мыс пластина ілінеді, мыс пластинада эпоксидті шайыр құйылатын саңылау , көп режимді оптикалық талшыққа, оптикалық қосқышқа, ультракүлгін эксимер лазеріне және талшықты-оптикалық қосқышқа, жарық қуат детекторына жазылған көлбеу талшықты Bragg торы. Эксперимент нәтижелері көрсетеді. өлшеу қателігі және сенсорды калибрлеу нәтижесінің қателігі 0,0634°С; жүйенің ақауын табу уақыты 3,24 с аспайды. Жүйе жоғары өлшеу дәлдігі мен тамаша тұрақтылыққа ие, нақты температураны өлшеу жүйелеріне бейімделуі мүмкін және белгілі бір практикалық құндылыққа ие.
  • Некоторые метрики заблокированы вашими 
    Тип записи:Публикация,
    МОДЕЛИРОВАНИЕ СПЕКТРОВ РЕШЕТОК БРЭГГА С ПЕРЕМЕННЫМИ ТЕХНИЧЕСКИМИ ПАРАМЕТРАМИ В ВОЛОКОННО ОПТИЧЕСКИХ ДАТЧИКАХ ДЛЯ ОБНАРУЖЕНИЯ ДЕФОРМАЦИИ В КОМПОЗИТНЫХ МАТЕРИАЛАХ
    (Mukhametzhan Tynyshbayev ALT University, 2023-10-18)
    Aliya Kalizhanova
    ;
    Айнұр Козбакова
    ;
    Бахыт Ералиева
    ;
    ;
    Современность ставит перед измерительными системами огромные и все возрастающие задачи. Удовлетворение этих требований становится возможным при объединении дисциплин, находящихся на границе многих дисциплин: физики, химии, электроники, механики и т.д. В результате таких сочетаний волоконно-оптические технологии вошли во многие отрасли науки и техники, уже найдя применение во многих областях и специальностях. К числу таких областей относятся, в частности, измерительные системы на основе волоконно-оптических датчиков. В статье отражены вопросы, связанные со встроенными в композит оптоволоконными датчиками на основе волоконных брэгговских решеток (ВБР), которые позволяют измерять распределения деформации при механической нагрузке. Конструкции из композитных материалов часто подвергаются внешним возмущениям окружающей среды, которые могут привести к повреждениям, поэтому требуют мониторинга качества состояния конструкции в реальном времени. Более подходящие датчики для таких целей–это волоконно–оптические датчики на основе решеток Брэгга, поскольку они способны достигать целей диагностики, мониторинга состояния и быть очень компактными по размеру, а также могут быть встроены в структуры. На основе проведенных испытаний, предваряемых расчетами и компьютерным моделированием, демонстрируется влияние параметров используемых алгоритмов статической оптимизации на точность распределения напряжений, измеряемых с помощью волоконно-оптических брэгговских решеток. Представленные в работе численные расчеты и экспериментальные результаты позволяют создать оптоволоконный датчик, который можно использовать в композитной структуре.
    Цитирования (OpenAlex) 1
  • Некоторые метрики заблокированы вашими 
    Тип записи:Публикация,
    ПОСТРОЕНИЕ МОДЕЛИ БРЭГГОВСКОЙ СТРУКТУРЫ С ПЕРЕМЕННЫМИ ТЕХНОЛОГИЧЕСКИМИ ПАРАМЕТРАМИ
    (Mukhametzhan Tynyshbayev ALT University, 2024-03-28)
    Aliya Kalizhanova
    ;
    Айнур Козбакова
    ;
    Бахыт Ералиева
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    ;
    Построение модели брэгговской структуры с переменными технологическими параметрами остаётся актуальной задачей в современной науке и инжиниринге. Моделирование брэгговских структур с переменными параметрами может помочь в разработке новых материалов с уникальными свойствами, которые могут быть применены в различных областях, от оптики до электроники. В работе представлены результаты численных расчетов, направленных на построение спектров волоконных брэгговских решеток с различными структурными параметрами. Также представлен метод, используемый для разработки математических моделей изучаемых структур. Для этого использовалась система уравнений, сопряженных модов, которая решалась численно с использованием метода матрицы перехода TMM (Transfer Matrix Method). Результаты моделирования брэгговских структур могут быть использованы в различных технологических инновациях, в создании новых типов оптических устройств или в области фотоники.
  • Некоторые метрики заблокированы вашими 
    Тип записи:Публикация,
    Sensor Systems for Measuring Force and Temperature with Fiber-Optic Bragg Gratings Embedded in Composite Materials
    (Multidisciplinary Digital Publishing Institute, 2024-08-14)
    Aliya Kalizhanova
    ;
    Айнур Козбакова
    ;
    ; ;
    Анар Утегенова
    Currently, there is a high interest in smart sensors and integrated composite materials in various industries such as construction, aviation, automobile, medical, information technology, communication, and manufacturing. Here, a new conceptual design for a force and temperature sensor system is developed by integrating fiber optic Bragg grating sensors embedded within composite materials, and a mathematical model is proposed that allows one to estimate strain and temperature based on signals obtained from optical Bragg gratings. This is important for understanding the behaviors of sensors under different conditions and for creating effective monitoring systems. Describing the strain gradient distribution, especially considering different materials with different values of Young's modulus, provides insight into how different materials respond to applied forces and temperature changes. The shape of the strain gradient distribution was obtained, which is a quadratic function with a maximum value of 1500 µ, with a maximum value at the center of the lattice and a symmetrically decreasing strain value with distance from the central part of the fiber Bragg grating. With axial strain at the installation site of the Bragg grating sensor under applied force values ranging from 10 to 11 N, the change in strain was linear. As a result of theoretical research, it was found that the developed system with fiber-optic sensors based on Bragg gratings embedded in composite materials is resistant to external influences and temperature changes.
    Цитирования (OpenAlex) 7Цитирования (OpenCitations) 3
  • Некоторые метрики заблокированы вашими 
    Тип записи:Публикация,
    Design of a Fiber Temperature and Strain Sensor Model Using a Fiber Bragg Grating to Monitor Road Surface Conditions
    (Multidisciplinary Digital Publishing Institute, 2024-09-13)
    Гулжан Кашаганова
    ;
    Айнур Козбакова
    ;
    ;
    Күлжан Тогжанова
    ;
    Жулдыз Алимсеитова
    In this paper, the types and principles of operation of fiber sensors based on fiber Bragg gratings (FBGs) are investigated. The influence of strain and temperature on the characteristics of FBGs is considered, and a method for the simultaneous measurement of these parameters is presented. Laboratory studies were carried out in the temperature range from +18 °C to +135 °C with an incremental step of 5 °C, with the actual temperature not deviating by more than ±0.5 °C. From the data obtained, the Bragg wavelength–temperature relationships were plotted, which showed a linear increase in wavelength with increasing temperature. This study shows that the use of two FBGs with a different sensitivity to temperature and strain allowed for the simultaneous measurement of both parameters. Numerical models created in the MATLAB R2022b environment confirmed the high accuracy and precision of the measurements. The FBG-based sensors demonstrated a robust performance in harsh environments, withstanding temperatures of up to 160 °C and high humidity, making them applicable in various industries and sciences. This work confirms that FBGs are a promising tool for accurate temperature and strain measurements, providing reliable results in harsh environments.
    Цитирования (OpenAlex) 9Цитирования (OpenCitations) 7
  • Некоторые метрики заблокированы вашими 
    Тип записи:Публикация,
    Experimental studies of sensors based on fiber Bragg gratings embedded in the internal structure of composite plates
    (2024-10-04)
    Aliya Kalizhanova
    ;
    Айнур Козбакова
    ;
    ;
    Beibut Amirgaliyev
    ;
    The main purpose of this article is to study the structural characteristics of carbon fiber samples printed on a 3D printer, including embedded sensors, during 3D printing, through numerical and experimental studies. There is a widespread tendency to replace metals with modern composite materials. Various methods can be used to measure the destruction of the composite structure. Fiber Bragg array sensors are known as intelligent localized and global structural condition prediction devices for all kinds of structural applications, especially those using composite materials. In this work, we created control plates by impregnating a selected number of layers of carbon fabric with epoxy resin. Fiber-optic Bragg sensors were additionally located between the layers of carbon fabric. In the course of experimental studies, a fiber Bragg grating sensor was embedded in the middle of the sample, and a second sensor was attached to the finished surface of the sample. We conducted environmental tests to examine the durability of the additively manufactured standard’s components and the impact of integrated sensors on the composite sample. We applied the concept of equations, known as conjugate modes, and used the transition matrix method to solve them numerically. The scientific novelty of the work is the development of a new method and technology for measuring spatial deformation in composite materials using fiber-optic Bragg gratings.
    Цитирования (OpenAlex) 1
  • Некоторые метрики заблокированы вашими 
    Тип записи:Публикация,
    ИССЛЕДОВАНИЕ И ОПРЕДЕЛЕНИЕ ЧУВСТВИТЕЛЬНОСТИ К РАСТЯЖЕНИЮ ИЗГОТОВЛЕННЫХ БРЭГГОВСКИХ РЕШЕТОК
    (Mukhametzhan Tynyshbayev ALT University, 2025-02-25)
    Aliya Kalizhanova
    ;
    Айнур Козбакова
    ;
    ;
    G.S. Nabiyeva
    ;
    В данной работе рассматривается методика измерения распределения деформаций в композитной пластине из углеродного волокна с использованием волоконно-оптических датчиков Брэгга. Представлен экспериментальный анализ влияния растяжения на центральную длину волны отраженного сигнала ВБР. Исследования проводились на композитных образцах с встроенными оптическими волокнами, размещенными на разных уровнях структуры. Полученные результаты подтверждают возможность использования ВБР для контроля деформаций и напряжений в композитных материалах. Представленные данные могут быть полезны при разработке интеллектуальных конструкций с встроенной системой мониторинга.