Statistical characterization of low-porosity, additively manufactured metal foams measured in an acoustic impedance tube

2021 ◽  
Vol 150 (4) ◽  
pp. A307-A307
Author(s):  
Stephanie G. Konarski ◽  
Christina J. Naify ◽  
Charles A. Rohde ◽  
Scott Roberts
Keyword(s):  
Acoustic Impedance ◽  
Metal Foams ◽  
Statistical Characterization ◽  
Impedance Tube ◽  
Low Porosity

Deterministic and statistical characterization of rigid frame porous materials from impedance tube measurements

2017 ◽  
Vol 142 (4) ◽  
pp. 2407-2418 ◽  
Author(s):  
M. Niskanen ◽  
J.-P. Groby ◽  
A. Duclos ◽  
O. Dazel ◽  
J. C. Le Roux ◽  
...  
Keyword(s):  
Porous Materials ◽  
Statistical Characterization ◽  
Impedance Tube ◽  
Rigid Frame

GEOMETRICAL CHARACTERIZATION OF KELVIN-LIKE METAL FOAMS FOR DIFFERENT STRUT SHAPES AND POROSITY

2015 ◽  
Vol 18 (6) ◽  
pp. 637-652 ◽  
Author(s):  
Prashant Kumar ◽  
Frederic Topin ◽  
Lounes Tadrist
Keyword(s):  
Metal Foams ◽  
Geometrical Characterization

Microstructural Characterization of Open-Pore Metal Foams of Pure Metals

2015 ◽  
Vol 52 (2) ◽  
pp. 83-107 ◽  
Author(s):  
B. S. Mocker ◽  
A. M. Matz ◽  
N. Jost ◽  
P. Krug
Keyword(s):  
Microstructural Characterization ◽  
Metal Foams ◽  
Pure Metals

scholarly journals Critical Review of EMC Standards for the Measurement of Radiated Electromagnetic Emissions from Transit Line and Rolling Stock

Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 759
Author(s):  
Andrea Mariscotti
Keyword(s):  
Time Distribution ◽  
Communication Systems ◽  
Electromagnetic Compatibility ◽  
Transportation Systems ◽  
Operating Conditions ◽  
Rolling Stock ◽  
Intrinsic Variability ◽  
Statistical Characterization ◽  
Electromagnetic Emissions

Accurate and comprehensive methods for the assessment of radiated electromagnetic emissions in modern electric transportation systems are a necessity. The characteristics and susceptibility of modern victim signaling and communication radio services, operating within and outside the right-of-way, require an update of the measurement methods integrating or replacing the swept frequency technique with time domain approaches. Applicable standards are the EN 50121 (equivalent to the IEC 62236) and Urban Mass Transport Association (UMTA) with additional specifications from project contracts. This work discusses the standardized methods and settings, and the representative operating conditions, highlighting areas where improvements are possible and opportune (statistical characterization of measurement results, identification and distinction of emissions and line resonances, and narrowband and broadband phenomena). In particular for the Electromagnetic Compatibility (EMC) assessment with new Digital Communication Systems, the characterization of time distribution of spectral properties is discussed, e.g., by means of Amplitude Probability Distribution and including time distribution information. The problem of determination of site and setup uncertainty and repeatability is also discussed, observing on one hand the lack of clear indications in standards and, on the other hand, the non-ideality and intrinsic variability of measurement conditions (e.g., rolling stock operating conditions, synchronization issues, and electric arc intermittence).

Statistical characterization of the signal-in-space errors of the BDS: a comparison between BDS-2 and BDS-3

GPS Solutions ◽  
2021 ◽  
Vol 25 (3) ◽  
Author(s):  
Guo Chen ◽  
Renyu Zhou ◽  
Zhigang Hu ◽  
Yifei Lv ◽  
Na Wei ◽  
...  
Keyword(s):  
Statistical Characterization

Statistical characterization of engineered tissues using confocal mosaic technology

2010 ◽  
Author(s):  
David Levitz ◽  
Ardalan Ardeshiri ◽  
Jabeer Ahmed ◽  
Daniel S. Gareau ◽  
Steven L. Jacques
Keyword(s):  
Statistical Characterization ◽  
Engineered Tissues
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