Negative-Pressure Effect Plates for Maintaining Position and Orientation of Underwater Robots

Author(s):  
Takahiro TAKEBAYASHI ◽  
Yousuke YUMOTO ◽  
Norimitsu SAKAGAMI ◽  
Sadao KAWAMURA
RSC Advances ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 1535-1543 ◽  
Author(s):  
Biao Zhao ◽  
Xi Zhang ◽  
Jiushuai Deng ◽  
Chun Zhang ◽  
Yang Li ◽  
...  

Graphene/PEBAX composite films present high-efficiency EMI shielding properties and good sensitivity as well as sensing stability.


Author(s):  
Yousuke YUMOTO ◽  
Sonoko SAKAI ◽  
Norimitsu SAKAGAMI ◽  
Sadao KAWAMURA

2012 ◽  
Vol 215-216 ◽  
pp. 105-110 ◽  
Author(s):  
Biao Wang ◽  
Li Qin Zhao ◽  
Qing Yan Ma

In the deep-hole drilling process, chips can not be easily removed, so the influence factors of the negative-pressure removing-chips were analyzed on the existing DF negative-pressure removing-chip mechanism by the hydraulic pressure theory and the injection angle κ and negative pressure gap S were analyzed with FLUENT software. The results show that negative pressure effect were best in 32°of κ and 0.4 mm of S and negative pressure effect are better in 28°of κ and 0.5mm of S , which lay good theoretical foundation for the optimization and characteristics of negative pressure mechanism in near-dry deep-hole drilling.


2019 ◽  
Vol 36 (8) ◽  
pp. 1422-1435 ◽  
Author(s):  
Norimitsu Sakagami ◽  
Yosuke Yumoto ◽  
Takahiro Takebayashi ◽  
Sadao Kawamura

2010 ◽  
Vol 97-101 ◽  
pp. 3219-3224 ◽  
Author(s):  
Wen Qi Ma ◽  
Li Fang Xu ◽  
He Chun Yu

Simulation models based on the different structural levitation vortexes were built, the analysis on the flow characteristics of pressure distribution and bearing capacity was conducted by using the RNG κ-ε turbulent model and non-uniform meshing in variable working conditions. At last, the influence factors and variation rules of vortex adsorption negative pressure effect were obtained. The theory and the experiment results indicate that the vortex carrier with symmetrical tangential air supply has the optimal stability, but the optimal negative pressure effect and the great lifting force are obtained by the vortex carrier with tangential single air supply.


2018 ◽  
Author(s):  
Kunpeng Yuan ◽  
Zhongyin Zhang ◽  
Xiaoliang Zhang ◽  
Dawei Tang

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