Results 31 to 40 of about 9,117,404 (329)

Investigation of strain measurement method with balancing currents

Mokslas: Lietuvos Ateitis, 2010
It is shown that construction state identification systems are integral part of public and local warning and security systems. Structure of construction of state identification system is proposed and analysed.
Ričardas Masiulionis
doaj   +1 more source

A Comprehensive Study on Measurement Accuracy of Distributed Fiber Optic Sensors Embedded within Capillaries of Solid Structures

Sensors, 2023
Embedding fiber optic sensors (FOSs) within parts for strain measurement is attracting widespread interest due to its great potential in the field of structural health monitoring (SHM).
Yuzhe Xiao, Calvin Rans, Dimitrios Zarouchas, Rinze Benedictus   +3 more
doaj   +1 more source

Polarized cathodoluminescence for strain measurement [PDF]

Review of Scientific Instruments, 2019
Strain can alter the properties of semiconductor materials. The selection of a strain measurement technique is a trade-off between sensitivity, resolution, and field of view, among other factors. We introduce a new technique based on the degree of polarization of cathodoluminescence (CL), which has excellent sensitivity (10−5), an intermediate ...
Fouchier, M., Rochat, N., Pargon, E., Landesman, Jean-Pierre   +3 more
openaire   +4 more sources

Distributed Sensing at Centimeter-Scale Spatial Resolution by BOFDA: Measurements and Signal Processing

IEEE Photonics Journal, 2012
In this paper, we demonstrate high spatial (≈3 cm) and spectral (≈30 MHz) resolution Brillouin sensing by use of Brillouin optical frequency-domain analysis (BOFDA) and signal processing.
Romeo Bernini, Aldo Minardo, Luigi Zeni
doaj   +1 more source

Dynamic Sensor Interrogation Using Wavelength-Swept Laser with a Polygon-Scanner-Based Wavelength Filter

Sensors, 2013
We report a high-speed (~2 kHz) dynamic multiplexed fiber Bragg grating (FBG) sensor interrogation using a wavelength-swept laser (WSL) with a polygon-scanner-based wavelength filter.
Kyung Hyun Park, Han-Cheol Ryu, Sang-Pil Han, Namje Kim, Ik Gon Park, Mi Sun Jung, Myeong Ock Ko, Yong Seok Kwon, Min Yong Jeon   +8 more
doaj   +1 more source

Measuring strain in sheet metals [PDF]

FME Transactions, 2019
A sensitive and precise experimental system able to time-track the static and dynamic response of steel sheets to intense loads is hereby described. This methodological article is based on a specific investigation carried out in order to verify the correct functioning and safety conditions of a large sheet metal structure.
Braut S., Pavlovic A., Beno P., Babic M.
openaire   +5 more sources

Enhancement of Strain/Temperature Measurement Range and Spatial Resolution in Brillouin Optical Correlation Domain Analysis Based on Convexity Extraction Algorithm

IEEE Access, 2019
We propose and experimentally demonstrate a novel method to enhance the performance of the Brillouin optical correlation domain analysis (BOCDA) by analyzing the shape characteristic of the measured Brillouin gain spectrum.
Bin Wang, Xinyu Fan, Yuanxiu Fu, Zuyuan He   +3 more
doaj   +1 more source

3D shape shearography technique for surface strain measurement of free-form objects.

Applied Optics, 2019
Shearography is a non-destructive testing technique that provides full-field surface strain characterization. Previous inspection of flat objects or simple geometric shapes has been reported. However, real-life objects especially in aerospace, transport,
A. Anisimov, Mariya G. Serikova, R. Groves   +2 more
semanticscholar   +1 more source

Selective Laser Melting of a Ti-6Al-4V Lattice-Structure Gear: Design, Topology Optimization, and Experimental Validation

Applied Sciences
The manufacture of lightweight components is one of the most important requirements in the automotive and aerospace industries. Gears, on the other hand, are among the heaviest parts in terms of their total weight. Accordingly, a spur gear was considered,
Riad Ramadani, Snehashis Pal, Aleš Belšak, Jožef Predan   +3 more
doaj   +1 more source

Embedded Fiber Bragg Grating Sensors for Monitoring Temperature and Thermo-Elastic Deformations in a Carbon Fiber Optical Bench

Sensors, 2023
A composite optical bench made up of Carbon Fiber Reinforced Polymer (CFRP) skin and aluminum honeycomb has been developed for the Tunable Magnetograph instrument (TuMag) for the SUNRISE III mission within the NASA Long Duration Balloon Program.
Ana Fernández-Medina, Malte Frövel, Raquel López Heredero, Tomás Belenguer, Antonia de la Torre, Carolina Moravec, Ricardo San Julián, Alejandro Gonzalo, María Cebollero, Alberto Álvarez-Herrero   +9 more
doaj   +1 more source