Results 81 to 90 of about 6,027 (232)
Static Vertical Displacement Measurement of Bridges Using Fiber Bragg Grating (FBG) Sensors [PDF]
Advances in Structural Engineering, 2013 Vertical displacements are one of the most relevant parameters for structural health monitoring of bridges in both the short and long terms. Bridge managers around the globe are always looking for a simple way to measure vertical displacements of bridges. However, it is difficult to carry out such measurements. On the other hand, in recent years, with
Yau, Man +3 more
openaire +2 more sources
Advanced Intelligent Systems, EarlyView.A compact and flexible wearable force myography sensor based on optical fiber technology detects muscle activity through pressure‐induced light loss. The sensor offers high sensitivity for detecting subtle force and finger motion changes, along with excellent signal stability under dynamic and sweating conditions.
Chongyoung Chung +3 more
wiley +1 more source
Intrinsic, multiplexable sensors for electric field strength using structural slow light in phase-shifted fibre Bragg gratings [PDF]
, 2012 In this paper we demonstrate through simulation the potential for phase-shifted fibre Bragg gratings incorporating structural slow light to enable intrinsic reflection-mode point sensors for electric field or voltage.
Niewczas, Pawel, Orr, Philip
core +1 more source
Highly Versatile Real‐Time Optical Noise Filtering Through Temporal Cloaking
Laser &Photonics Reviews, EarlyView.Conventional bandpass filtering strategies may be insufficient for recovering optical waveforms under extremely noisy conditions. We demonstrate a temporal‐cloaking denoising strategy enabled by the temporal Talbot effect, which concentrates the coherent signal of interest into short temporal slots while broadband noise remains temporally spread.
Majid Goodarzi +5 more
wiley +1 more source
Sensitivity Enhancement of Strain Sensing Utilizing a Differential Pair of Fiber Bragg Gratings
Sensors, 2012 In strain measurement applications, the matched fiber Bragg gratings (FBG) method is generally used to reduce temperature dependence effects. The FBG parameters have to be designed to meet the requirements by the particular application. The bandwidth and
Ping Wang +6 more
doaj +1 more source
Highly stable fiber Bragg gratings written in hydrogen-loaded fiber [PDF]
, 2014 Author name used in this publication: Xiao-Ming Tao2000-2001 > Academic research: refereed > Publication in refereed journalVersion of ...
Dong, XY, Guan, BO, Tam, HY, Tao, X
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A High Sensitive Micro-Seismic Fiber Bragg Grating(FBG) Sensor System
Procedia Engineering, 2011 AbstractA high sensitive micro-seismic fiber Bragg grating (FBG) sensor system based on narrow line width distributed feedback (DFB) laser is realized by using filtering demodulation. Sensitivity of micro-seismic FBG sensor lies on the structure of the sensor shell and the shape of the reflectivity spectrum of FBG.
Wang, Jin-Yu +4 more
openaire +1 more source
Exploring Thermal and Mechanical Strains During Laying Down Process in Fused Filament Fabrication
Macromolecular Materials and Engineering, EarlyView.This study analyzes strain evolution and thermal behavior during FFF of PLA using strain gauges and infrared imaging. Microstrain levels depend on printing conditions, with adhesion‐induced compression during cooling and peak strains in early layers. Microtomography shows minimal porosity, while thermal imaging reveals rapid heat penetration, strong ...
Boubakeur Mecheri +3 more
wiley +1 more source
Fiber design and realization of point-by-point written fiber Bragg gratings in polymer optical fibers [PDF]
, 2012 An increasing interest in making sensors based on fiber Bragg gratings (FBGs) written in polymer optical fibers (POFs) has been seen recently. Mostly microstructured POFs (mPOFs) have been chosen for this purpose because they are easier to fabricate ...
Bang, Ole +3 more
core +2 more sources
Polymer Composites, EarlyView.Schematic representation of the beneficial effect of ply pre‐curing on temperature overshoot, internal strain and warpage during cure of thin and thick thermosetting composites. ABSTRACT Detection of manufacturing‐induced defects in thermosetting composites is crucial to guarantee part quality, safety, and improve manufacturing efficiency.
Francesco Taddei +3 more
wiley +1 more source