Results 41 to 50 of about 77,948 (279)
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source
Traffic Flow Detection Using Distributed Fiber Optic Acoustic Sensing
IEEE Access, 2018 This paper proposes a novel method for traffic flow detection using distributed optical fiber acoustic sensing (DAS). Different from the traditional traffic flow detection method, this method detects the traffic vibration signal using a fiber optic cable.
Huiyong Liu +5 more
doaj +1 more source
Phenomenology of Avalanche Recordings from Distributed Acoustic Sensing
Journal of Geophysical Research: Earth Surface, 2022 AbstractAvalanches and other hazardous mass movements pose a danger to the population and critical infrastructure in alpine areas. Hence, understanding and continuously monitoring mass movements are crucial to mitigate their risk. We propose to use Distributed Acoustic Sensing (DAS) to measure strain rate along a fiber‐optic cable to characterize ...
Patrick Paitz +7 more
openaire +4 more sources
Advanced Engineering Materials, EarlyView.The presented study focuses on the fracture behaviour of carbon‐bonded magnesia MgO–C refractories, where environmentally friendly fructose, collagen and lignin serve as temporary binding agents. The partial substitution of the source material with recycled MgO–C reduces the fracture resistance, which can be counteracted by the additional introduction ...
Marc Neumann +6 more
wiley +1 more source
Intensity interferometry distributed acoustic/vibration sensing
JPhys PhotonicsThis paper introduces an innovative type of distributed acoustic sensing (DAS) system. Instead of employing an ultra-coherent laser source along with an external modulator, it adopts a broadband laser with direct modulation.
Eran Burstein, Avishay Eyal
doaj +1 more source
A New Sparsification and Reconstruction Strategy for Compressed Sensing Photoacoustic Tomography
, 2017 Compressed sensing (CS) is a promising approach to reduce the number of measurements in photoacoustic tomography (PAT) while preserving high spatial resolution. This allows to increase the measurement speed and to reduce system costs.
Bauer-Marschallinger, Johannes +5 more
core +1 more source
Advanced Engineering Materials, EarlyView.Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm +5 more
wiley +1 more source
Marine Seismic Exploration with Distributed Acoustic Sensing
EngineeringMarine seismic exploration is traditionally conducted using towed streamers to investigate the geological structure of sea shelves and identify mineral deposits.
Xiangge He +6 more
doaj +1 more source
International Journal of Distributed Sensor Networks, 2016 Energy-efficient data aggregation is important for underwater acoustic sensor networks due to its energy constrained character. In this paper, we propose a kind of energy-efficient data aggregation scheme to reduce communication cost and to prolong ...
Deqing Wang, Ru Xu, Xiaoyi Hu, Wei Su
doaj +1 more source
ATR-FTIR Spectroscopic Analysis of Sorption of Aqueous Analytes into Polymer Coatings Used with Guided SH-SAW Sensors [PDF]
, 2005 Attenuated total internal reflectance Fourier transform infrared (ATR-FTIR) spectroscopy was used for the investigation of sorption of aqueous solutions of analytes into polymer coatings. A series of simple model polymers, such as poly(dimethylsiloxane),
Hossenlopp, Jeanne +4 more
core +1 more source