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This book is a collection of papers that originated as a Special Issue, focused on some recent advances related to fiber Bragg grating-based sensors and systems. Conventionally, this book can be divided into three parts: intelligent systems, new types of sensors, and original interrogators. The intelligent systems presented include evaluation of strain transition properties between cast-in FBGs and cast aluminum during uniaxial straining, multi-point strain measurements on a containment vessel, damage detection methods based on long-gauge FBG for highway bridges, evaluation of a coupled sequential approach for rotorcraft landing simulation, wearable hand modules and real-time tracking algorithms for measuring finger joint angles of different hand sizes, and glaze icing detection of 110 kV composite insulators. New types of sensors are reflected in multi-addressed fiber Bragg structures for microwave–photonic sensor systems, its applications in load-sensing wheel hub bearings, and more complex influence in problems of generation of vortex optical beams based on chiral fiber-optic periodic structures. Original interrogators include research in optical designs with curved detectors for FBG interrogation monitors; demonstration of a filterless, multi-point, and temperature-independent FBG dynamical demodulator using pulse-width modulation; and dual wavelength differential detection of FBG sensors with a pulsed DFB laser.

Research & information: general --- Fiber Bragg Grating (FBG) --- composite insulator with embedded FBGs --- glaze icing --- icing detection --- fiber Bragg grating strain sensor --- algorithm --- hand motion capture --- real-time tracking --- fiber Bragg gratings --- landing simulation --- rotorcraft --- coupled sequential method --- landing structural response --- finite element analysis (FEA) --- microwave-photonic sensor systems --- Fiber Bragg Gratings --- Addressed Fiber Bragg Structures --- Multi-Addressed Fiber Bragg Structures --- long-gauge FBG --- damage detection --- highway bridges --- vehicle–bridge interaction --- comparative study --- fiber Bragg grating --- fiber optic sensor --- dynamic chirp --- DFB laser --- chiral structures --- orbital angular momentum --- apodization --- chirp --- coupled modes theory --- FBG --- PWM --- engine --- high temperature --- ECU --- FBG demodulator --- fiber sensing --- high-speed interrogation --- dynamic strain --- microwave photonic sensor system --- numerical simulation --- addressed fiber Bragg structures --- load-sensing bearings --- vehicle dynamics control --- Fibre Bragg Gratings --- neutron diffraction --- X-ray tomography --- tensile test --- fiber Bragg grating sensors --- spectrograph --- high angular dispersion --- curved detectors --- freeform optics

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• Reference Manager
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This book is a collection of papers that originated as a Special Issue, focused on some recent advances related to fiber Bragg grating-based sensors and systems. Conventionally, this book can be divided into three parts: intelligent systems, new types of sensors, and original interrogators. The intelligent systems presented include evaluation of strain transition properties between cast-in FBGs and cast aluminum during uniaxial straining, multi-point strain measurements on a containment vessel, damage detection methods based on long-gauge FBG for highway bridges, evaluation of a coupled sequential approach for rotorcraft landing simulation, wearable hand modules and real-time tracking algorithms for measuring finger joint angles of different hand sizes, and glaze icing detection of 110 kV composite insulators. New types of sensors are reflected in multi-addressed fiber Bragg structures for microwave–photonic sensor systems, its applications in load-sensing wheel hub bearings, and more complex influence in problems of generation of vortex optical beams based on chiral fiber-optic periodic structures. Original interrogators include research in optical designs with curved detectors for FBG interrogation monitors; demonstration of a filterless, multi-point, and temperature-independent FBG dynamical demodulator using pulse-width modulation; and dual wavelength differential detection of FBG sensors with a pulsed DFB laser.

Fiber Bragg Grating (FBG) --- composite insulator with embedded FBGs --- glaze icing --- icing detection --- fiber Bragg grating strain sensor --- algorithm --- hand motion capture --- real-time tracking --- fiber Bragg gratings --- landing simulation --- rotorcraft --- coupled sequential method --- landing structural response --- finite element analysis (FEA) --- microwave-photonic sensor systems --- Fiber Bragg Gratings --- Addressed Fiber Bragg Structures --- Multi-Addressed Fiber Bragg Structures --- long-gauge FBG --- damage detection --- highway bridges --- vehicle–bridge interaction --- comparative study --- fiber Bragg grating --- fiber optic sensor --- dynamic chirp --- DFB laser --- chiral structures --- orbital angular momentum --- apodization --- chirp --- coupled modes theory --- FBG --- PWM --- engine --- high temperature --- ECU --- FBG demodulator --- fiber sensing --- high-speed interrogation --- dynamic strain --- microwave photonic sensor system --- numerical simulation --- addressed fiber Bragg structures --- load-sensing bearings --- vehicle dynamics control --- Fibre Bragg Gratings --- neutron diffraction --- X-ray tomography --- tensile test --- fiber Bragg grating sensors --- spectrograph --- high angular dispersion --- curved detectors --- freeform optics

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The topics of interest in this book include significant challenges in the BMS design of EV/HEV. The equivalent models developed for several types of integrated Li-ion batteries consider the environmental temperature and ageing effects. Different current profiles for testing the robustness of the Kalman filter type estimators of the battery state of charge are used in this book. Additionally, the BMS can integrate a real-time model-based sensor Fault Detection and Isolation (FDI) scheme for a Li-ion cell undergoing degradation, which uses the recursive least squares (RLS) method to estimate the equivalent circuit model (ECM) parameters. This book will fully meet the demands of a large community of readers and specialists working in the field due to its attractiveness and scientific content with a great openness to the side of practical applicability. This covers various interesting aspects, especially related to the characterization of commercial batteries, diagnosis and optimization of their performance, experimental testing and statistical analysis, thermal modelling, and implementation of the most suitable Kalman filter type estimators of high accuracy to estimate the state of charge

Technology: general issues --- arrayed waveguide grating (AWG) --- CMOS sensor --- direct laser lithography --- fiber Bragg grating (FBG) --- lithium-ion battery --- fault detection and isolation --- sensor fault --- battery model --- battery management systems --- battery degradation --- electric vehicles --- online parameter estimation --- recursive least squares --- parallel-connected cells --- measuring test bench --- current distribution --- tab contact resistance --- battery --- ultracapacitor --- supercapacitor --- electric mobility --- electric bus --- SAFT lithium-ion battery --- Simscape model --- 3RC ECM Li-ion battery model --- state of charge --- adaptive EKF SOC estimator --- adaptive UKF SOC estimator --- particle filter SOC estimator --- ADVISOR estimate

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The evolution and need for the preservation and maintenance of existing structures, recent or historical, has fostered research in the area of structural monitoring, translated into the development of new techniques, equipment and sensors. Early detection of damage and accurate assessment of structural safety requires monitoring systems, the data from which can be used to calibrate numerical models for structural analysis and to assess safety. Data are obtained under real-time conditions, considering a group of parameters related to structural properties, such as stresses, accelerations, deformations and displacements. The analysis of structural properties is particularly relevant when the structure is subjected to extreme events (earthquakes, wind, fire and explosions, among others) or repeated loads (road/rail/air traffic, vibrations induced by equipment and machines), since they affect the structural integrity and put the users at risk. In order to prevent the severe damage and eventual collapse of structures, and consequent human, material and economic losses, the implementation of monitoring systems becomes a valuable tool for today's society. Monitoring of structures is becoming increasingly important, not only as preventive action, but also due to actual economic and sustainability concerns, to ensure a safer and more comfortable built environment.

History of engineering & technology --- image-based measurement --- crack measurement --- shear cracks --- flexural cracks --- damage index --- nuclear power plant --- visual inspection --- photometric stereo --- 3D reconstruction --- rotating stall --- non-synchronous blade vibration --- blade tip timing --- centrifugal compressor --- distributed measurements --- fiber optic sensors --- scour --- soil-structure interaction --- winkler model --- equivalent length --- corrosion sensor --- oil and gas pipelines --- optical fibers --- Fiber Bragg Grating (FBG) --- distributed optical fiber strain sensing cable --- Brillouin scattering --- Rayleigh scattering --- strain sensing cable characterization --- elasto-plastic behavior --- strain sensitivity coefficients --- bridge damage detection --- fiber optic gyroscope --- deep learning --- convolutional neural network --- Fiber Bragg grating --- fiber optic sensors embedded in concrete --- strain measurement --- monitoring --- cracking --- weldable fiber optic sensors --- optical fiber sensors --- material extrusion --- hybrid processes --- temperature and strain monitoring --- similarity measure --- subway tunnel --- distributed vibration --- feature extraction --- autoencoder --- ultra-weak FBG --- hyperspectral imaging --- spectral indices --- random forest --- growth stage --- Fusarium head blight --- structural health monitoring --- load localization --- load estimation --- depth sensor --- artificial neural networks --- castigliano’s theorem --- crack detection --- crack opening --- distributed fiber optic sensors --- DIC --- UHPFRC --- testing --- SHM --- microcracking --- PAD --- environmental monitoring --- colorimetric detection --- water --- atmosphere

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• Reference Manager
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The evolution and need for the preservation and maintenance of existing structures, recent or historical, has fostered research in the area of structural monitoring, translated into the development of new techniques, equipment and sensors. Early detection of damage and accurate assessment of structural safety requires monitoring systems, the data from which can be used to calibrate numerical models for structural analysis and to assess safety. Data are obtained under real-time conditions, considering a group of parameters related to structural properties, such as stresses, accelerations, deformations and displacements. The analysis of structural properties is particularly relevant when the structure is subjected to extreme events (earthquakes, wind, fire and explosions, among others) or repeated loads (road/rail/air traffic, vibrations induced by equipment and machines), since they affect the structural integrity and put the users at risk. In order to prevent the severe damage and eventual collapse of structures, and consequent human, material and economic losses, the implementation of monitoring systems becomes a valuable tool for today's society. Monitoring of structures is becoming increasingly important, not only as preventive action, but also due to actual economic and sustainability concerns, to ensure a safer and more comfortable built environment.

image-based measurement --- crack measurement --- shear cracks --- flexural cracks --- damage index --- nuclear power plant --- visual inspection --- photometric stereo --- 3D reconstruction --- rotating stall --- non-synchronous blade vibration --- blade tip timing --- centrifugal compressor --- distributed measurements --- fiber optic sensors --- scour --- soil-structure interaction --- winkler model --- equivalent length --- corrosion sensor --- oil and gas pipelines --- optical fibers --- Fiber Bragg Grating (FBG) --- distributed optical fiber strain sensing cable --- Brillouin scattering --- Rayleigh scattering --- strain sensing cable characterization --- elasto-plastic behavior --- strain sensitivity coefficients --- bridge damage detection --- fiber optic gyroscope --- deep learning --- convolutional neural network --- Fiber Bragg grating --- fiber optic sensors embedded in concrete --- strain measurement --- monitoring --- cracking --- weldable fiber optic sensors --- optical fiber sensors --- material extrusion --- hybrid processes --- temperature and strain monitoring --- similarity measure --- subway tunnel --- distributed vibration --- feature extraction --- autoencoder --- ultra-weak FBG --- hyperspectral imaging --- spectral indices --- random forest --- growth stage --- Fusarium head blight --- structural health monitoring --- load localization --- load estimation --- depth sensor --- artificial neural networks --- castigliano’s theorem --- crack detection --- crack opening --- distributed fiber optic sensors --- DIC --- UHPFRC --- testing --- SHM --- microcracking --- PAD --- environmental monitoring --- colorimetric detection --- water --- atmosphere