Results 51 to 60 of about 307,556 (373)

Temperature Sensors Based on Polymer Fiber Optic Interferometer

open access: yesChemosensors, 2022
Temperature measurements are of great importance in many fields of human activities, including industry, technology, and science. For example, obtaining a certain temperature value or a sudden change in it can be the primary control marker of a chemical ...
M. Szczerska
semanticscholar   +1 more source

A Two Fiber Bragg Gratings Sensing System to Monitor the Torque of Rotating Shaft

open access: yesSensors, 2016
By fixing two FBGs on the surface of a rotating shaft along the direction of ±45° and using dynamic wavelength demodulation technology, we propose an optical fiber sensing system to monitor the driving torque and torsion angle of the rotating shaft.
Yongjiao Wang   +4 more
doaj   +1 more source

An educational review on distributed optic fiber sensing based on Rayleigh backscattering for damage tracking and structural health monitoring

open access: yesMeasurement science and technology, 2022
This paper is a review on distributed optic fiber sensing for structural health monitoring applications, with a deeper focus on technologies relying on the Rayleigh backscattering phenomenon. It addresses the basic physical principles which are involved,
Ludovic Chamoin   +2 more
semanticscholar   +1 more source

Ultra-Weak Fiber Bragg Grating Sensing Network Coated with Sensitive Material for Multi-Parameter Measurements

open access: yesSensors, 2017
A multi-parameter measurement system based on ultra-weak fiber Bragg grating (UFBG) array with sensitive material was proposed and experimentally demonstrated.
Wei Bai   +6 more
doaj   +1 more source

Flexible fiber-laser ultrasound sensor for multiscale photoacoustic imaging

open access: yesOpto-Electronic Advances, 2021
Photoacoustic imaging (PAI) is a noninvasive biomedical imaging technology capable of multiscale imaging of biological samples from organs down to cells.
Bai-Ou Guan   +4 more
doaj   +1 more source

Highly Sensitive Two-Axis Bending Sensor Based on Arc-Induced Long Period Fiber Grating in Dual Side-Hole Fiber

open access: yesIEEE Photonics Journal, 2018
A highly sensitive two-axis bending sensor based on long period fiber grating (LPFG) in a dual side-hole fiber (DSHF) is presented and experimentally investigated.
Yang Ouyang   +5 more
doaj   +1 more source

Understanding and measuring mechanical signals in the tumor stroma

open access: yesFEBS Open Bio, EarlyView.
This review discusses cancer‐associated fibroblast subtypes and their functions, particularly in relation to extracellular matrix production, as well as the development of 3D models to study tumor stroma mechanics in vitro. Several quantitative techniques to measure tissue mechanical properties are also described, to emphasize the diagnostic and ...
Fàtima de la Jara Ortiz   +3 more
wiley   +1 more source

Galloping Vibration Monitoring of Overhead Transmission Lines by Chirped FBG Array

open access: yesPhotonic Sensors, 2022
A distributed online fiber sensing system based on the phase-sensitive optical time domain reflectometer (Φ-OTDR) enhanced by the drawing tower fiber Bragg grating (FBG) array is presented and investigated experimentally for monitoring the galloping of ...
Qizhong Yan   +5 more
doaj   +1 more source

Long Short-Term Memory Neural Network with Transfer Learning and Ensemble Learning for Remaining Useful Life Prediction

open access: yesSensors, 2022
Prediction of remaining useful life (RUL) is greatly significant for improving the safety and reliability of manufacturing equipment. However, in real industry, it is difficult for RUL prediction models trained on a small sample of faults to obtain ...
Lixiong Wang   +5 more
doaj   +1 more source

Commissioning evaluation of a deviceless 4DCT scanner

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Background The utilization of four‐dimensional computed tomography (4DCT) for radiation therapy has not seen major advances to the method of data binning since shortly after inception. Recently there is increased interest in the utilization of an alternative binning method rather than more established techniques.
Hunter Tillery   +2 more
wiley   +1 more source

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