Results 21 to 30 of about 2,278,338 (304)
Performance Evaluation of a Biometric System Based on Acoustic Images
Sensors, 2011 An acoustic electronic scanning array for acquiring images from a person using a biometric application is developed. Based on pulse-echo techniques, multifrequency acoustic images are obtained for a set of positions of a person (front, front with arms ...
Juan J. Villacorta +3 more
doaj +1 more source
IEEE Access, 2023 High-frequency chest wall oscillation (HFCWO) therapy is one of the techniques to facilitate the draining of a patient’s lung secretion in pathological situations, and smart therapy with HFCWO devices equipped with multiple actuators can be ...
Chang Sheng Lee +4 more
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Addressing Non-Uniqueness in Guided Wave Tomography for Limited-View Corrosion Mapping
NDT - Journal of Non-Destructive TestingGuided wave tomography has proven to be an effective method for detecting pipeline corrosion, providing both location and quantitive estimates of wall thickness loss.
Emiel Hassefras +2 more
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Q-Compensated Gaussian Beam Migration under the Condition of Irregular Surface
Remote Sensing, 2023 The viscosity of actual underground media can cause amplitude attenuation and phase distortion of seismic waves. When seismic images are processed assuming elastic media, the imaging accuracy for the deep reflective layer is often reduced.
Jianguang Han +3 more
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Polish Polar Research, 2017 The identification of macroalgal beds is a crucial component for the description of fjord ecosystems. Direct, biological sampling is still the most popular investigation technique but acoustic methods are becoming increasingly recognized as a very ...
Kruss Aleksandra +4 more
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An Iterative Fast Microphone Array Design Method Employing Equilateral Triangular Subarrays
SensorsIn industrial acoustic imaging, microphone array design is often limited by the strong frequency dependence of array performance, the high computational cost of optimization, and the expense of deploying large numbers of microphones.
Xiaobin Hong +3 more
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In-situ monitoring of sub-surface and internal defects in additive manufacturing: A review
Materials & Design, 2022 Additive Manufacturing (AM), or 3D printing, processes depend on a user-defined set of optimized process parameters to create a component. Monitoring and control of AM processes in real-time can help achieve process stability and repeatability to produce
Youssef AbouelNour, Nikhil Gupta
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Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying
Advanced Engineering Materials, EarlyView.An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara +8 more
wiley +1 more source
Stem Cell Research & Therapy, 2020 Background The aim of this study was to examine the effect of a three-step approach that utilizes the application of adipose tissue-derived mesenchymal stem cells (AD-MSCs), encapsulation, and pulsed focused ultrasound (pFUS) to help the engraftment and ...
Mehdi Razavi +7 more
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Comparison of Triply Periodic Minimal Surface Energy Absorbers Under Uniaxial Compressive Loading
Advanced Engineering Materials, EarlyView.This study investigates LCD 3D printed Triply Periodic Minimal Surface (TPMS) structures as mechanical energy absorbers. By comparing various base designs and layered combinations under uniaxial compression, it identifies that a Diamond‐Gyroid sandwich structure offers superior performance.
Sergej Grednev +2 more
wiley +1 more source