scholarly journals Magnesium Alloy Forming using Underwater Shock Wave by Wire Electric Discharge

2019 ◽  
Vol 13 (3) ◽  
Keyword(s):  
Shock Wave ◽  
Magnesium Alloy ◽  
Electric Discharge ◽  
Underwater Shock Wave ◽  
Underwater Shock

scholarly journals The Basic Research for Pulverization of Rice Using Underwater Shock Wave by Electric Discharge

2011 ◽  
Vol 5 (2) ◽  
pp. 115-130 ◽  
Author(s):  
Makoto Ide ◽  
Manabu Shibuta ◽  
Naoyuki Wada ◽  
Shigeru Tanaka ◽  
Hideki Hamashima ◽  
...  
Keyword(s):  
Shock Wave ◽  
Electric Discharge ◽  
Basic Research ◽  
Underwater Shock Wave ◽  
Underwater Shock

Research About Pulverization of Rice Using Underwater Shock Wave by Electric Discharge

2010 ◽  
Author(s):  
Makoto Ide ◽  
Seiichi Irie ◽  
Nobuyuki Matsuo ◽  
Asuka Oda ◽  
Shigeru Tanaka ◽  
...  
Keyword(s):  
Shock Wave ◽  
Electric Discharge ◽  
Food Samples ◽  
Frictional Heat ◽  
Underwater Shock Wave ◽  
Manufacturing Method ◽  
Application Techniques ◽  
Rate Improvement ◽  
Underwater Shock ◽  
Rice Powder

In recent years, it is expected that the consumption of rice powder in Japan increases for food self-support rate improvement. The consumption of enormous energy during making rice powder and loss of starch in rice by frictional heat is occurred by using the existing manufacturing method. Application techniques using underwater shock wave which is generated by high voltage electric discharge are studied in our laboratory. When some food samples are treated by underwater shock wave, following advantages are obtained, a little heat treatment, decreasing consumption of the energy, and shortening of processing time. In food processing using underwater shock wave, the spalling destruction due to propagation characteristics of shock wave and mediums, which have difference density, is used. In this study, the pressure vessel for pulverization of rice was developed, and then, intensity of pressure in vessel is measured by way of experiment, and simulated numerical analysis.

scholarly journals Forming of magnesium alloy by underwater shock wave

2016 ◽  
Vol 4 (1) ◽  
pp. 27-29 ◽  
Author(s):  
Liqun Ruan ◽  
Shunsuke Ezaki ◽  
Fujita Masahiro ◽  
Shirley Shen ◽  
Yosihito Kawamura
Keyword(s):  
Shock Wave ◽  
Magnesium Alloy ◽  
Underwater Shock Wave ◽  
Underwater Shock

Experimental Study of the Underwater Shock Wave on the High-Voltage Electric Discharge by Carbon Fiber

2013 ◽  
Vol 767 ◽  
pp. 261-264
Author(s):  
Hironori Maehara ◽  
Shigeru Tanaka ◽  
Kazuyuki Hokamoto ◽  
Shigeru Itoh
Keyword(s):  
Shock Wave ◽  
Experimental Study ◽  
Carbon Fiber ◽  
Thin Plate ◽  
Electric Discharge ◽  
High Voltage ◽  
High Capacity ◽  
Underwater Shock Wave ◽  
Underwater Shock

Carbon fiber is employed to induce underwater shock wave by the high-voltage electric discharge. By the release of an energy 10 kJ stored in a high-capacity condenser bank, carbon fiber was exploded showing the evidence inducing underwater shock wave effectively to a thin plate to be formed.

Destruction of Concrete Block Using Underwater Shock Wave Generated by Electric Discharge

2006 ◽  
Author(s):  
Masahiko Otsuka ◽  
Shigeru Itoh
Keyword(s):  
Shock Wave ◽  
Electric Discharge ◽  
High Voltage ◽  
High Speed ◽  
Concrete Block ◽  
Metal Wire ◽  
High Speed Camera ◽  
Underwater Shock Wave ◽  
Underwater Shock ◽  
Made In

In this study, the destruction of concrete block using underwater shock wave generated by electric discharge was studied. Initially, the shock wave generated by electric discharge was investigated by optical observation using a high-speed camera and pressure measurement. A comparison of the underwater shock wave generated from the electrode with and without connecting a metal wire was made. A metal wire was connected to an electrode and a high voltage impulsive current was passed through it to generate the underwater shock wave. A hole was made in the concrete block, filled with water and an electrode was inserted into the hole, which acts as a pressure vessel. The electric current was passed through this electrode to generate underwater shock wave for the destruction of concrete block.

Explosive Welding Using Underwater Shock Wave Generated by the Detonation of the Detonating Code

2011 ◽  
Vol 673 ◽  
pp. 265-270 ◽  
Author(s):  
Akihisa Mori ◽  
Li Qun Ruan ◽  
Kazumasa Shiramoto ◽  
Masahiro Fujita
Keyword(s):  
Shock Wave ◽  
Sound Velocity ◽  
Detonation Velocity ◽  
Explosive Welding ◽  
New Method ◽  
Underwater Shock Wave ◽  
Metal Plates ◽  
Experimental Parameters ◽  
Underwater Shock ◽  
Point Velocity

Detonating code is a flexible code with an explosive core. It is used to transmit the ignition of explosives with high detonation velocity in the range of 5.5 to 7 km/s. However, it is difficult to use detonating code for the explosive welding of common metals since the horizontal point velocity usually exceeds the sound velocity. Hence, in the present work, a new method using underwater shock wave generated by the detonation of detonating code was tried. The details of the experimental parameters and the results are presented. From the results it is observed that the above technique is suitable to weld thin metal plates with relatively less explosives.

Von Neumann reflection of underwater shock wave

1999 ◽  
Vol 85 (1-3) ◽  
pp. 48-51 ◽  
Author(s):  
Y Nadamitsu ◽  
Z.Y Liu ◽  
M Fujita ◽  
S Itoh
Keyword(s):  
Shock Wave ◽  
Underwater Shock Wave ◽  
Von Neumann ◽  
Underwater Shock

Numerical Simulation on Explosive Welding Process Using Reflected Underwater Shock Wave

2007 ◽  
Vol 566 ◽  
pp. 309-314
Author(s):  
Kazumasa Shiramoto ◽  
Masahiro Fujita ◽  
Yasuhiro Ujimoto ◽  
Hirofumi Iyama ◽  
Shigeru Itoh
Keyword(s):  
Numerical Simulation ◽  
Shock Wave ◽  
Explosive Welding ◽  
Welding Process ◽  
Underwater Shock Wave ◽  
Underwater Shock ◽  
Effective Use

The paper describes a numerically simulated result for the explosive welding using reflected underwater shock wave. Through the numerical simulation, the effective use of reflected underwater shock wave was clearly suggested and the method to improve the assembly was demonstrated.

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