Results 21 to 30 of about 602,214 (264)

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

An Indirect Measurement Methodology to Identify Load Fluctuations on Axial Turbine Runner Blades

Sensors, 2020
Smooth integration of intermittent energy sources, such as solar and wind power, into the electrical grid induces new operating conditions of the hydraulic turbine by increasing the off-design operations, start/stops, and load variations.
Arash Soltani Dehkharqani, Fredrik Engström, Jan-Olov Aidanpää, Michel J. Cervantes   +3 more
doaj   +1 more source

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

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

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

Determination of loading modes for endurance tests of reinforced concrete sleepers on the basis of experimental measurement of their stress state under the conditions of the Test Loop at Shcherbinka

Вестник Научно-исследовательского института железнодорожного транспорта, 2021
The article considers the issue of changing the stressstrain state of reinforced concrete sleepers depending on the value of the axle loads and the requirements for the modes of its bench endurance tests. This issue is very relevant, since at present, in
O. A. Suslov, N. V. Ressina, A. V. Portnov, A. A. Novikov, V. A. Mariychuk   +4 more
doaj   +1 more source

Measurement of Strains in Fixed Bridges with Electronic Strain Gauges [PDF]

Journal of Dental Research, 1967
Peer Reviewed ; http://deepblue.lib.umich.edu/bitstream/2027.42/66954/2/10.1177_00220345670460032701 ...
Craig, Robert G., Peyton, Floyd Avery
openaire   +3 more sources

Application of Machine Learning for Data with an Atmospheric Corrosion Monitoring Sensor Based on Strain Measurements

Metals, 2022
Machine learning methods were applied to data with an atmospheric corrosion monitoring sensor based on strain measurements to improve the evaluation accuracy of the thickness reduction of a low-carbon steel plate due to atmospheric corrosion.
Taisei Okura, Naoya Kasai, Hirotsugu Minowa, Shinji Okazaki   +3 more
doaj   +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