Advanced experimental setup for the reliability characterization of radio-acoustic sensors in water pipes

2011 ◽  
Author(s):  
D. Trinchero ◽  
R. Stefanelli ◽  
A. Kadri ◽  
A. Abu-Dayya ◽  
T. Khattab ◽  
...  
Keyword(s):  
Experimental Setup ◽  
Acoustic Sensors ◽  
Water Pipes

scholarly journals Hot Box Investigations of a Ventilated Bioclimatic Wall for NZEB Building Façade

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1327
Author(s):  
Dwinanto Sukamto ◽  
Monica Siroux ◽  
Francois Gloriant
Keyword(s):  
Energy Efficiency ◽  
Flow Rate ◽  
Experimental Setup ◽  
Air Flow Rate ◽  
Space Thickness ◽  
Zero Energy ◽  
Interior Space ◽  
Air Space ◽  
Thermal Metrology

The building sector is the largest consumer of energy, but there are still major scientific challenges in this field. The façade, being the interface between the exterior and interior space, plays a key role in the energy efficiency of a building. In this context, this paper focuses on a ventilated bioclimatic wall for nearly zero-energy buildings (NZEB). The aim of this study is to investigate an experimental setup based on a hot box for the characterization of the thermal performances of the ventilated wall. A specific ventilated prototype and an original thermal metrology are developed. This paper presents the ventilated prototype, the experimental setup, and the experimental results on the thermal performances of the ventilated wall. The influence of the air space thickness and the air flow rate on the thermal performances of the ventilated wall is studied.

scholarly journals Characterization of Noise Level Inside a Vehicle under Different Conditions

Sensors ◽  
2020 ◽  
Vol 20 (9) ◽  
pp. 2471 ◽  
Author(s):  
Daniel Flor ◽  
Danilo Pena ◽  
Luan Pena ◽  
Vicente A. de Sousa ◽  
Allan Martins
Keyword(s):  
Regression Analysis ◽  
Noise Level ◽  
Acoustic Noise ◽  
Experimental Setup ◽  
Strongly Correlated ◽  
Noise Levels ◽  
Noise Sources ◽  
Statistical Tools ◽  
Window Position

Vehicular acoustic noise evaluations are a concern of researchers due to health and comfort effects on humans and are fundamental for anyone interested in mitigating audio noise. This paper focuses on the evaluation of the noise level inside a vehicle by using statistical tools. First, an experimental setup was developed with microphones and a microcomputer located strategically on the car’s panel, and measurements were carried out with different conditions such as car window position, rain, traffic, and car speed. Regression analysis was performed to evaluate the similarity of the noise level from those conditions. Thus, we were able to discuss the relevance of the variables that contribute to the noise level inside a car. Finally, our results revealed that the car speed is strongly correlated to interior noise levels, suggesting the most relevant noise sources are in the vehicle itself.

Experimental Setup for Radio Characterization of Fire at Microwave Frequencies

2021 ◽  
Author(s):  
Pedro Coimbra ◽  
Stefania Faria ◽  
Mario Vala ◽  
Joao Felicio ◽  
Carlos Fernandes ◽  
...  
Keyword(s):  
Experimental Setup ◽  
Microwave Frequencies

Design, Fabrication, and Characterization of a Soft Multi-Fingered Hand

2016 ◽  
Author(s):  
Lena Johnson ◽  
Hugh A. Bruck ◽  
Satyandra K. Gupta
Keyword(s):  
Geometric Model ◽  
Design Parameters ◽  
Experimental Setup ◽  
Robotic Hand ◽  
Iterative Design ◽  
Modeling Methods ◽  
Design And Manufacturing ◽  
Overall Performance ◽  
Fabrication And Characterization

This paper describes the design, fabrication, testing and modeling of the SUR Hand. The SUR Hand is a soft, under actuated robotic hand. Through an iterative design and manufacturing process, SUR Hand’s soft, actuating components have been adapted from the original PneuFlex, pneumatically actuated finger to be highly flexible and capable of actuating a precision force. This paper shows how altering the design parameters of the fingers altered their overall performance. Furthermore, it details the experimental setup for testing the components, as well as the modeling methods used. Finally, it shows the process for creating and validating a geometric model that characterizes proper grasping strategies, assuming a passive palm component.

scholarly journals Application of Infrared Digital Holography for Characterization of Inhomogeneities and Voluminous Defects of Single Crystals on the Example of ZnGeP2

2020 ◽  
Vol 10 (2) ◽  
pp. 442 ◽  
Author(s):  
Victor Dyomin ◽  
Alexander Gribenyukov ◽  
Sergey Podzyvalov ◽  
Nikolay Yudin ◽  
Mikhail Zinoviev ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
Spatial Resolution ◽  
Digital Holography ◽  
Second Phase ◽  
Experimental Setup ◽  
Holographic Method ◽  
Comparison Of The Results

In this work, the method of IR digital holography intended for detection of volumetric defects in ZnGeP2 single crystals has been tested. The holographic method is verified by a comparison of the results obtained with the data obtained by other methods. The spatial resolution of the experimental setup is ~15–20 µm. The volumetric defects of the ZnGeP2 crystal structure (in samples with thickness up to 50 mm) such as growth striations, dislocation chain, and inclusions of the second phase (Zn3P2) shaped as needles up to ~100 µm long and ~10 µm wide have been visualized by the method of IR digital holography.

Signal analysis and characterization of experimental setup for the transient thermoreflectance technique

2006 ◽  
Vol 77 (8) ◽  
pp. 084901 ◽  
Author(s):  
Robert J. Stevens ◽  
Andrew N. Smith ◽  
Pamela M. Norris
Keyword(s):  
Signal Analysis ◽  
Experimental Setup

scholarly journals A Measurement Setup and Automated Calculation Method to Determine the Charge Injection Capacity of Implantable Microelectrodes

Sensors ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 4152 ◽  
Author(s):  
Ana Cisnal ◽  
Juan-Carlos Fraile ◽  
Javier Pérez-Turiel ◽  
Victor Muñoz-Martinez ◽  
Carsten Müller ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Charge Injection ◽  
Experimental Setup ◽  
Excitable Tissue ◽  
Tissue Resistance ◽  
Voltage Transient ◽  
Transient Measurements ◽  
Functional Electrostimulation

The design of safe stimulation protocols for functional electrostimulation requires knowledge of the “maximum reversible charge injection capacity” of the implantable microelectrodes. One of the main difficulties encountered in characterizing such microelectrodes is the calculation of the access voltage Va. This paper proposes a method to calculate Va that does not require prior knowledge of the overpotential terms and of the electrolyte (or excitable tissue) resistance, which is an advantage for in vivo electrochemical characterization of microelectrodes. To validate this method, we compare the calculated results with those obtained from conventional methods for characterizing three flexible platinum microelectrodes by cyclic voltammetry and voltage transient measurements. This paper presents the experimental setup, the required instrumentation, and the signal processing.

Characterization of corrosion morphologies from deteriorated underground cast iron water pipes

2019 ◽  
Vol 70 (10) ◽  
pp. 1837-1851 ◽  
Author(s):  
Ravin N. Deo ◽  
Suranji Rathnayaka ◽  
Chunshun Zhang ◽  
Guoyang Y. Fu ◽  
Benjamin Shannon ◽  
...  
Keyword(s):  
Cast Iron ◽  
Water Pipes

Characterization of Air-Entrainment in a Plunging Water Jet System Using Image Processing: An Educational Approach

2011 ◽  
Author(s):  
Arman Molki ◽  
Lyes Khezzar ◽  
Afshin Goharzadeh
Keyword(s):  
Image Processing ◽  
Free Surface ◽  
Flow Behavior ◽  
Air Entrainment ◽  
Experimental Setup ◽  
Water Mixture ◽  
Educational Approach ◽  
Image Processing Techniques ◽  
Processing Techniques

This paper outlines a proposed experimental setup and image processing techniques using MATLAB for the characterization of the average dynamic behavior of the air/water mixture under the free surface of water penetrated by a plunging jet. The proposed setup focuses on the dynamics of air entrainment below the free surface and the identification of the major regimes related to the entrainment process of bubbles in water, namely: (a) no-entrainment, (b) incipient entrainment, (c) intermittent entrainment, and (d) continuous entrainment. The experimental setup allows students to observe the flow behavior below the free liquid surface and determine the penetration depth of the bubble plumes using image processing techniques in MATLAB. The focal point of the experiment is image analysis for qualitative and quantitative characterization of the bubble plume.

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