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Smart sensors are technologies designed to facilitate the monitoring operations. For instance, power consumption can be minimized through on-board processing and smart interrogation algorithms, and state detection enhanced through collaboration between sensor nodes. Applied to structural health monitoring, smart sensors are key enablers of sparse and dense sensor networks capable of monitoring full-scale structures and components. They are also critical in empowering operators with decision making capabilities. The objective of this Special Issue is to generate discussions on the latest advances in research on smart sensing technologies for structural health monitoring applications, with a focus on decision-enabling systems. This Special Issue covers a wide range of related topics such as innovative sensors and sensing technologies for crack, displacement, and sudden event monitoring, sensor optimization, and novel sensor data processing algorithms for damage and defect detection, operational modal analysis, and system identification of a wide variety of structures (bridges, transmission line towers, high-speed trains, masonry light houses, etc.).
NSGA-II --- wind force --- wavelet packet decomposition --- structural health monitoring --- amplitude spectrum --- environmental noise --- patch antenna --- damage identification --- event-triggered sensing --- Particle Swarm Optimization (PSO) algorithm --- high-speed train --- low-velocity impacts --- concrete structures --- sensors distribution optimization --- acceleration --- digital sampling moiré --- crack --- displacement sensor --- length effect --- FBG sensor array --- SHM --- space window --- Bayesian blind source separation --- feature selection --- stress detection --- wheel minor defect --- strain --- uniaxial stress measurement --- turbine --- impact identification --- helical antenna --- energy analysis of wavelet band --- strain wave --- time window --- structural steel members --- steel frame --- acoustoelastic effect --- demand-based nodes --- online wayside detection --- sensor --- bridge --- sensitivity --- acoustic emission --- bending stiffness --- wireless smart sensors --- distributed dense sensor network --- mapping construction --- data fusion --- fuzzy classification --- shear-wave birefringence --- normal mode --- piezoelectric wafer active sensors --- resonant frequency --- electromagnetic oscillation --- settlement --- sensor optimization --- modal frequencies --- perturbation theory --- feature extraction --- Virtual Distortion Method (VDM) --- reflective optical sensor --- fibre bundle --- smartphones --- crack identification --- active sensing --- test vehicle --- calibration --- stretching method --- model updating --- rotary ultrasonic array --- 2D crack growth --- data processing --- damage detection --- impactor stiffness --- tip clearance --- transmission tower --- phase spectrum --- concrete crack --- structural impact monitoring --- shaking table tests --- optical crack growth sensor --- steel strand --- passive sensing --- sudden event monitoring --- aero engine --- principal component analysis
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Wood-based materials are CO2-neutral, renewable, and considered to be environmentally friendly. The huge variety of wood species and wood-based composites allows a wide scope of creative and esthetic alternatives to materials with higher environmental impacts during production, use and disposal. Quality of wood is influenced by the genetic and environmental factors. One of the emerging uses of wood are building and construction applications. Modern building and construction practices would not be possible without use of wood or wood-based composites. The use of composites enables using wood of lower quality for the production of materials with engineered properties for specific target applications. Even more, the utilization of such reinforcing particles as carbon nanotubes and nanocellulose enables development of a new generation of composites with even better properties. The positive aspect of decomposability of waste wood can turn into the opposite when wood or wood-based materials are exposed to weathering, moisture oscillations, different discolorations, and degrading organisms. Protective measures are therefore unavoidable for many outdoor applications. Resistance of wood against different aging factors is always a combined effect of toxic or inhibiting ingredients on the one hand, and of structural, anatomical, or chemical ways of excluding moisture on the other.
neural network --- Pinus massoniana Lamb. --- intra-ring variation --- relative humidity --- ultimate state --- nondestructive assessment --- machinability --- stiffness --- wood based composites --- bamboo --- poplar seedlings --- thinning --- blue staining fungi --- tropical woods --- compression --- bending stiffness --- wooden windows --- ultrasonic wave velocity measurement --- glued lamella --- three-point bending --- wood properties --- technological and product innovations --- structural changes --- non-destructive testing --- hardwoods --- brittleness --- green larch --- root-collar diameter --- FTIR --- material preference --- cooling tower --- tensile modulus --- strength grading --- immigrants --- weight of a user --- density --- flexible chair --- predictive performance --- heat treatment --- modulus of elasticity --- orthotropic --- acoustic resonance --- building material --- CIEL*a*b* system --- deflection at the modulus of rupture --- marketing --- bamboo grid packing --- fungi --- minimal curve radius --- European hardwoods --- cyclic loading --- chemical composition --- laminated wood --- volume yield --- tensile strength --- artificial weathering --- glulam --- dynamic modulus of elasticity --- colour changes --- modulus of elasticity (MOE) --- coefficient of wood bendability --- urban housing --- Resistance to Impact Milling (RIM) --- nondestructive testing --- Coniophora puteana --- roughness --- brown rot --- wood --- phenol formaldehyde resin --- wood-processing industry performance --- elemental composition --- natural weathering --- longitudinal stress wave velocity --- mechanical properties --- aluminium reinforcements --- chemical changes --- colour change --- High-Energy Multiple Impact (HEMI)–test --- plantation timber --- fiber-managed hardwoods --- cooling packing --- wood mechanical properties --- flexural rigidity --- moisture content --- ultrasonic speed --- color --- elastic constants --- Douglas-fir --- mixed-effects hierarchical linear models --- wood impregnation --- dynamic strength --- microfibril angle --- silviculture --- low quality round wood --- Eucalyptus --- hybrid beams --- end-product-based fiber attribute determinates --- high frequency drying --- infrared spectroscopy --- building culture background --- lumber --- Euler-Bernoulli --- ultrasound --- cell-wall mechanics --- colour --- deflection at the limit of proportionality
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