Results 61 to 70 of about 31,642 (200)

Miniature Uncooled and Unchopped Fiber Optic Infrared Thermometer for Application to Cutting Tool Temperature Measurement

open access: yesSensors, 2018
A new infrared thermometer, sensitive to wavelengths between 3 μm and 3.5 μm, has been developed. It is based on an Indium Arsenide Antimony (InAsSb) photodiode, a transimpedance amplifier, and a sapphire fiber optic cable.
Andrew D. Heeley   +3 more
doaj   +1 more source

Imaging of solid flow in a gravity flow rig using infra-red tomography [PDF]

open access: yes, 2005
Information on flow regimes is vital in the analysis and measurement of industrial process flow. Almost all currently available method of measuring the flow of two-component mixtures in industrial pipelines endeavors to average a property of the flow ...
Md. Yunus, Mohd. Amri
core  

Distributed opto-mechanical analysis of liquids outside standard fibers coated with polyimide

open access: yes, 2019
The analysis of surrounding media has been a long-standing challenge of optical fiber sensors. Measurements are difficult due to the confinement of light to the inner core of standard fibers.
Bashan, Gil   +3 more
core   +1 more source

Feasibility of fiber-optic radiation sensor using Cerenkov effect for detecting thermal neutrons

open access: yesOptics Express, 2013
In this research, we propose a novel method for detecting thermal neutrons with a fiber-optic radiation sensor using the Cerenkov effect. We fabricate a fiber-optic radiation sensor that detects thermal neutrons with a Gd-foil, a rutile crystal, and a plastic optical fiber. The relationship between the fluxes of electrons inducing Cerenkov radiation in
Kyoung Won, Jang   +6 more
openaire   +2 more sources

Radiation pyrometer for gas turbine blades [PDF]

open access: yes
A turbine blade temperature measuring system for liquid oxygen turbopumps is reported. The system includes a three mode, two-input optical signal processor, interconnecting cable, and four sensor heads. Two of the heads are aperture type, while the other
Compton, W. A., Rohy, D. A.
core   +1 more source

Research on Gamma Ray Detections using Fiber Optic Radiation Sensors

open access: yesInternational Journal of Innovative Technology and Exploring Engineering, 2019
A comprehensive view of various techniques involved in detection of gamma rays, obtained from literatures has been presented. It also discusses with the current research activities carried out at various fronts, provides information about wide range of dosimeter available for detection of gamma rays.
openaire   +1 more source

1700 deg C optical temperature sensor [PDF]

open access: yes
A new gas temperature sensor was developed that shows promise of sufficient ruggedness to be useful as a gas turbine temperature sensor. The sensor is in the form of a single-crystal aluminum oxide ceramic, ground to a cone shape and given an emissive ...
Mossey, P. W.   +2 more
core   +1 more source

Sub-Hz line width diode lasers by stabilization to vibrationally and thermally compensated ULE Fabry-Perot cavities

open access: yes, 2008
We achieved a 0.5 Hz optical beat note line width with ~ 0.1 Hz/s frequency drift at 972 nm between two external cavity diode lasers independently stabilized to two vertically mounted Fabry-Perot (FP) reference cavities.
Alnis, J.   +5 more
core   +1 more source

Concept study on using fiber-optic sensors with nanocrystalline diamond sheet for tissue monitoring in radiotherapy

open access: yesResults in Optics
Ionizing radiation plays a crucial role in medical diagnostics and therapy, particularly in cancer treatment. This paper presents a novel concept for real-time tissue monitoring during radiotherapy using fiber-optic sensors integrated with a diamond ...
Monika Kosowska   +2 more
doaj   +1 more source

Analysis and preliminary design of optical sensors for propulsion control [PDF]

open access: yes
A fiber-optic sensor concept screening study was performed. Twenty sensor subsystems were identified and evaluated. Two concepts selected for further study were the Fabry-Perot fiber-optic temperature sensor and the pulse-width-modulated phosphorescent ...
James, K. A.   +2 more
core   +1 more source

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