Қазақ ұлттық қыздар педагогикалық университеті / Казахский национальный женский педагогический университет
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- Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, Development and Design of an Optical-Electronic System of Fiber-Optic Sensors Based on Inclined Fiber Bragg Gratings(2023-06-07); The object of research is an optical-electronic system for recording and processing signals from fiber-optic sensors. Due to the use of optical fibers as sensitive elements, there is no influence on the measurement result of electromagnetic fields, spurious electromagnetic radiation, channel crosstalk, there are no problems, electrical safety is significantly increased, there are no problems of arcing and sparking. A scheme of a receiving-transmitting module has been developed, which is additionally equipped with a preliminary protection and filtering system. Further, measuring tracks, microcontroller software and functional tests were ordered to determine the metrological properties of the proposed system.Signal integrity analysis is presented, which allows you to check whether the signals present in the device are correctly transmitted between their sources and receivers. The analysis of signal integrity is investigated, which is performed in two stages of the device design process. Modeling of the studied module in the specialized program Altium Designer. With the help of this program, potential problems were found, such as the occurrence of crosstalk between paths, the exact values of some elements, accurate analytical calculation. Learned an impedance analysis trace for a given connection's parameters, where the value affects the shape of the given path, its physical dimensions, distance from other paths, and other physical properties of the board. Optoelectronic system for recording and processing signals from fiber optic sensors based on Bragg fiber gratings resistant to electromagnetic interference and temperature, for use in modern systems for monitoring building structures, bridges, tunnels, dams, high-rise buildings, railways, oil platforms, buildings, pipelines.Цитирования (OpenAlex) 1 - Некоторые метрики заблокированы вашиминастройками согласия
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); ; 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 вашиминастройками согласия
Тип записи:Публикация, - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, SIGNALS PROCESSING METHOD FOR FIBER-OPTIC SENSORS WITH TILTED FIBER BRAGG GRATING(Mukhametzhan Tynyshbayev ALT University, 2022-10-10); The article presents signals processing method for fiber-optic sensors with tilted Bragg grating. Developed technique is based on the analysis of signals output spectrum to capture Fourier-images in the area. The main idea of the being offered method is in using sensitive tilted fiber Bragg grating fiber-optic sensors. The given sensor is insensitive to any influence in multimode fibers and other parts of the device. Devices, based on such principles, do not need recalibration after switching on and further operation. There is presented the sensor parameters optimization on the basis of numerical modeling. Outcomes of numerical modeling permitted to broaden the domain of internal parameters of sensor’s sustainable operation. - Некоторые метрики заблокированы вашиминастройками согласия
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); ; Shyngys KenshimovThis 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 вашиминастройками согласия
Тип записи:Публикация, RESEARCH AND ANALYSIS OF THE PROPERTIES OF COMPOSITE MATERIALS. DEFINITION AND CLASSIFICATION OF COMPOSITE MATERIALS(Mukhametzhan Tynyshbayev ALT University, 2023-10-19); Unlike conventional materials, composites have become a suitable form for a range of current applications in industry, hospital and sports. This is combined with their remarkable physical, thermal, galvanic and mechanical properties, as well as, in addition, their low weight and investment cost in the given cases. This review article attempts to provide a general concept of composite materials, definition and classification of composite materials, most commonly polymer matrix composites and metal matrix composites. Polypropylene polyurethane and aluminum alloy were selected as matrices for this extract given their attractive properties and their use in various applications. All kinds of research are devoted to a variety of building materials, material processing and various properties. The determination of mechanical data appears to be a significant iterative process in the development and design of composite materials and their components. With regard to the mechanical properties of composite materials, this article highlights some of the uncertainties and limitations that affect the evaluation of mechanical properties, ranging from material constituents, industrial process, test characteristics and environmental conditions.Цитирования (OpenAlex) 2Цитирования (OpenCitations) 2 - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, Development of an Optoelectronic System for Recording and Processing Signals From Fiber-optic Sensors(2023-10-24); Natural disasters, in particular earthquakes, can damage bridges, tunnels, dams, high-rise buildings, railways, oil platforms, buildings, and pipelines with catastrophic humanitarian, social, economic, and environmental consequences. Thus, automatic assessment of damage to industrial and civil construction structures after an earthquake in real-time or on request is necessary for early emergency response, effective preparation of rescue plans, and mitigation of these catastrophic consequences. The article presents the use of a system of distributed fiber-optic sensors based on Bragg fiber arrays, which will allow periodic measurements and monitoring of the condition of structures, assessing trends in its technical condition and thereby facilitating the identification of possible threats. The given research presents assembling and testing optoelectronic systems to record and process signals from fiber-optic sensors. The main optoelectronic systems to record and process the signals from fiber-optic sensors are light source controllers and optical power detectors. There was an assembled controller diagram, which apart from the light source includes the current source for its adequate operation, as well as the systems necessary for stabilizing its working point. The scheme was modeled for specifying nominal and maximum operation criteria. Construction has been designed in a way, that the light source controller includes structures of the current regulation and stabilization SLED (super luminescent diode) and temperature stabilization. Apart from that, there was assembled the microsystem of the optical power detector additionally to the light detector, which includes the microsystems of intensification and filtration of the signal measured, processing analog data into digital form, and microcontroller, used for preliminary data analysis. Data of optoelectronic systems diagram to record and process the signals from fiber-optic sensors has high response speed, low noise level, and sufficient progress. type your abstract here. - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, Optical Sensor System for 3D Jones Matrix Reconstruction of Optical Anisotropy Maps of Self-Assembled Polycrystalline Soft Matter Films(Multidisciplinary Digital Publishing Institute, 2024-02-29)Цитирования (OpenAlex) 26 - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, Assembling and testing optoelectronic system to record and process signals from fiber-optic sensors(Institute of Advanced Engineering and Science (IAES), 2024-06-04); Beibut AmirgaliyevThe given research presents assembling and testing optoelectronic system to record and process signals from fiber-optic sensors. The main optoelectronic systems to record and process the signals from fiber-optic sensors are light source controller and optical power detector. There was assembled controller diagram, which apart from light source includes current source for its adequate operation, as well as the systems necessary for stabilizing its working point. The scheme was modelled for specifying nominal and maximum operation criteria. Construction has been designed in the way, that light source controller includes structures of the current regulation and stabilization super luminescent diode (SLED) and temperature stabilization. Apart from that, there was assembled the microsystem of optical power detector additionally to the light detector, which includes the microsystems of intensification and filtration of the signal measured, processing analog data into digital form, microcontroller, used for preliminary data analysis. Data of optoelectronic systems diagram to record and process the signals from fiber-optic sensors has high response speed, low noise level and sufficient progress. - Некоторые метрики заблокированы вашиминастройками согласия
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); ; Анар УтегеноваCurrently, 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