scholarly journals Imaging slit in metal plate using aerial ultrasound source scanning and nonlinear harmonic method

2020 ◽  
Vol 41 (6) ◽  
pp. 885-890
Author(s):  
Ayumu Osumi ◽  
Kenta Yamada ◽  
Youichi Ito
Keyword(s):  
Metal Plate ◽  
Harmonic Method

Interface Microstructure and Deformation Behavior of an Al-Cu Dissimilar Metal Plate

2013 ◽  
Vol 51 (7) ◽  
pp. 535-545 ◽  
Author(s):  
Kwang-Seok Lee ◽  
Su-Eun Lee ◽  
Jung Su Kim ◽  
Min Jung Kim ◽  
Dong Hyun Bae ◽  
...  
Keyword(s):  
Deformation Behavior ◽  
Metal Plate ◽  
Interface Microstructure ◽  
Dissimilar Metal

scholarly journals Optically transparent and very thin structure against electromagnetic pulse (EMP) using metal mesh and saltwater for shielding windows

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Duy Tung Phan ◽  
Chang Won Jung
Keyword(s):  
Electromagnetic Pulse ◽  
Low Cost ◽  
High Energy ◽  
Metal Plate ◽  
Optical Transparency ◽  
Shielding Effectiveness ◽  
Concrete Wall ◽  
Metal Mesh ◽  
Wide Range ◽  
Optically Transparent

AbstractAn electromagnetic pulse (EMP) with high energy can damage electronic equipment instantly within a wide range of thousands of kilometers. Generally, a metal plate placed inside a thick concrete wall is used against an EMP, but it is not suitable for an EMP shielding window, which requires not only strong shielding effectiveness (SE) but also optical transparency (OT). In this paper, we propose a very thin and optically transparent structure with excellent SE for EMP shielding window application. The proposed structure consists of a saltwater layer held between two glass substrates and two metal mesh layers on the outside of the glass, with a total thickness of less than 1.5 cm. The SE and OT of the structure are above 80 dB and 45%, respectively, which not only meet the requirement of EMP shielding for military purposes but also retain the procedure of good observation. Moreover, the OT of the structure can be significantly improved using only one metal mesh film (MMF) layer, while the SE is still maintained high to satisfy the required SE for home applicants. With the major advantages of low cost, optical transparency, strong SE, and flexible performance, the proposed structure can be considered a good solution for transparent EMP shielding windows.

Elliptical harmonic method for gravity forward modelling of 2D bodies

2021 ◽  
Vol 95 (5) ◽  
Author(s):  
Cheng Chen ◽  
Shaofeng Bian ◽  
Motao Huang
Keyword(s):  
Forward Modelling ◽  
Harmonic Method ◽  
Gravity Forward Modelling
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