An experimental study of microstrip antennas on very high permittivity ceramic substrates and very small ground planes

2001 ◽  
Vol 49 (5) ◽  
pp. 838-840 ◽  
Author(s):  
A. Hoorfar ◽  
A. Perrotta
Keyword(s):  
Experimental Study ◽  
Microstrip Antennas ◽  
High Permittivity ◽  
Ceramic Substrates ◽  
Very High

Miniaturized microstrip meander-line antenna with very high-permittivity substrate for sensor applications

2007 ◽  
Vol 49 (10) ◽  
pp. 2438-2440 ◽  
Author(s):  
Haiwen Liu ◽  
Shohei Ishikawa ◽  
An An ◽  
Satoshi Kurachi ◽  
Toshihiko Yoshimasu
Keyword(s):  
High Permittivity ◽  
Sensor Applications ◽  
Meander Line ◽  
Very High

Experimental Study of the Plastic Interaction of Model Surface Asperities during Sliding

1968 ◽  
Vol 10 (2) ◽  
pp. 121-132 ◽  
Author(s):  
C. M. Edwards ◽  
J. Halling
Keyword(s):  
Experimental Study ◽  
Friction And Wear ◽  
Normal Force ◽  
Tangential Force ◽  
Experimental Results ◽  
Interfacial Conditions ◽  
High Adhesion ◽  
Theoretical Predictions ◽  
Very High ◽  
Low Shear

The paper describes an experimental study of the plastic interaction of triangular shaped lead model asperities deformed under conditions of plane strain. The investigation yields values of the normal and tangential force variations throughout the junction interaction and details of the plastic deformation particularly in relation to junction growth. A number of asperity interfacial conditions are considered ranging from complete adhesion to very low shear strengths achieved using p.t.f.e. strip. The experimental results are compared with an earlier theoretical solution to this problem and show reasonable agreement with the theoretical predictions. In particular it is shown that the normal force, which is usually compressive, may become tensile for conditions of high adhesion between the asperities. This leads to very high values of the macroscopic friction coefficient such as occur in hard vacuum situations. The experimental results for the various surface conditions show sufficient agreement with theoretical predictions to justify the use of this type of theoretical approach for the wider study of the friction and wear of mating surfaces.

Experimental Study on Restoration of Deteriorated Timber due to Termites by Resin Filling

2022 ◽  
Author(s):  
Takashi Yajima ◽  
Kei-ichi Imamoto ◽  
Chizuru Kiyohara ◽  
Mikako Yamada
Keyword(s):  
Experimental Study ◽  
Injection Pressure ◽  
Theoretical Formula ◽  
Internal Cavity ◽  
Strength Recovery ◽  
The World ◽  
Stable Manner ◽  
Long Time ◽  
Filling Method ◽  
Very High

There are many valuable wooden buildings in the world, because timber has been used all over the world as a building material for a long time. However, there is an issue that timber deteriorates due to various factors. Therefore, in order to preserve these valuable wooden buildings, it is necessary to appropriately repair or reinforce treatment. One of the treatments is the resin filling method. In this method, filling the resin in order to restore the strength into an internal cavity caused by deterioration. It has become clear that it is possible to recover the strength using this method, however, we are still conducting construction based on the rule of thumb. Therefore, authors examined the resin characteristics in order to inject the resin in stable manner and ensure strength recovery. Authors focused on deteriorated timber due to termites, because Japan has a very high amount of such type of timber. Authors reports the following four aspects of the characteristics of resin filling into timber. 1. The Area velocity is determined by the injection pressure, width of the gap, and viscosity of the resin. 2. The resin spreads concentrically in the gap of wood, but there is no regularity in the random gap like deteriorated timber due to termites. 3. Authors proposed a new coefficient for the application, of a theoretical formula to deteriorated timber due to termites. 4. Authors proposed a flowchart of resin filling method to perform stable construction.

Coupled very-high permittivity dielectric resonators for clinical MRI

2020 ◽  
Vol 117 (10) ◽  
pp. 103701 ◽  
Author(s):  
Viacheslav Ivanov ◽  
Alena Shchelokova ◽  
Anna Andreychenko ◽  
Alexey Slobozhanyuk
Keyword(s):  
Dielectric Resonators ◽  
High Permittivity ◽  
Clinical Mri ◽  
Very High
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