Zobrazeno 1 - 10
of 4 786
pro vyhledávání: '"wave impedance"'
Publikováno v:
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 23, Iss 2 (2024)
Abstract The equivalent wave impedance circuit model (ECM-WI) is presented for the analysis of frequency selective surfaces (FSS). The development of the analytical model is based on homogenization theory, as well as analogies between wave theory and
Externí odkaz:
https://doaj.org/article/59b9597a405a4372a708220c0d0d1f84
Publikováno v:
Energy Science & Engineering, Vol 11, Iss 10, Pp 3641-3661 (2023)
Abstract A method of determining rock damage variable from wave impedance, which is suitable for the study of dynamics, is presented. The determined variable provides a more reasonable quantitative description of the degree of rock damage. First, the
Externí odkaz:
https://doaj.org/article/8824aa2b953c45a8981b369461e9f4c1
Publikováno v:
Micromachines, Vol 15, Iss 7, p 883 (2024)
This paper presents an expression to determine the complex wave impedance of a substrate-integrated waveguide for the dominant TE10 propagation mode, notably enhancing the accuracy in modeling the corresponding imaginary part. This was accomplished b
Externí odkaz:
https://doaj.org/article/14207b397dfd45d78aa8d7245e1308b3
Publikováno v:
Meitan xuebao, Vol 48, Iss 5, Pp 1969-1984 (2023)
Rock bolt support and borehole pressure relief change the medium properties of roadway surrounding rock, form the roadway gradient surrounding rock structure with three media and two planes, increase the absorption and attenuation ability of stress w
Externí odkaz:
https://doaj.org/article/8e3a8102f1704b6cb79be5a8eae1c46d
Publikováno v:
Archives of Acoustics, Vol vol. 48, Iss No 2, Pp 231-234 (2023)
The dependence of piezoelectric wave impedance on the rotation speed is investigated theoretically and numerically. The Coriolis force due to rotation is introduced into the piezoelectric motion equations, which is solved by the harmonic plane wave s
Externí odkaz:
https://doaj.org/article/6578abf6d2af4e12888b8cbf8f70a7e7
Publikováno v:
Frontiers in Materials, Vol 10 (2023)
The wave impeding board (WIB) is frequently integrated beneath dynamic machinery, tracks, and subgrades to counteract vibrations emanating from artificial sources. However, conventional WIBs have exhibited a limited isolation frequency band due to th
Externí odkaz:
https://doaj.org/article/457122e38f8148d9b5f712357f451284
Akademický článek
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Publikováno v:
Sensors, Vol 23, Iss 18, p 7666 (2023)
Environmental vibration pollution has serious negative impacts on human health. Among the various contributors to environmental vibration pollution in urban areas, rail transit vibration stands out as a significant source. Consequently, addressing th
Externí odkaz:
https://doaj.org/article/2785625d9a204bf29f708ea864262c89
Akademický článek
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Autor:
A. N. Kovalenko, A. D. Yarlykov
Publikováno v:
Российский технологический журнал, Vol 9, Iss 4, Pp 68-76 (2021)
On the basis of an electrodynamic model of a screened microstrip line, built on the basis of the projection method using the Chebyshev basis, which explicitly takes into account the edge features of the field, a mathematical model of a microstrip lin
Externí odkaz:
https://doaj.org/article/19a68a36d0f040daad0c9e37fc63e9c3