About the Production of Shock Waves by a Dielectric Spark Discharge in Liquids

1975 ◽  
pp. 504-510 ◽  
Author(s):  
R. Germer ◽  
W. Schaaffs ◽  
P. Krehl
Keyword(s):  
Shock Waves ◽  
Spark Discharge ◽  
Discharge In Liquids

scholarly journals Effects of improving current characteristics of spark discharge on underwater shock waves

2014 ◽  
Vol 8 (2) ◽  
pp. 245-252 ◽  
Author(s):  
Osamu Higa ◽  
Katsuya Higa ◽  
Hironori Maehara ◽  
Shigeru Tanaka ◽  
Ken Shimojima ◽  
...  
Keyword(s):  
Shock Waves ◽  
Spark Discharge ◽  
Underwater Shock ◽  
Current Characteristics

scholarly journals Исследование динамики искрового разряда в воздухе в промежутке острие--плоскость методом теневого фотографирования

2019 ◽  
Vol 89 (1) ◽  
pp. 69
Author(s):  
К.И. Алмазова ◽  
А.Н. Белоногов ◽  
В.В. Боровков ◽  
Е.В. Горелов ◽  
И.В. Морозов ◽  
...  
Keyword(s):  
Shock Wave ◽  
Shock Waves ◽  
Spark Discharge ◽  
Plane Electrode ◽  
Ring Shape ◽  
Discharge Gap

AbstractThe microchannel structure of a spark discharge in a 1.5-mm-long point–plane gap has been studied by the method of shadow photography. The discharge dynamics (propagation of microchannels from the point into the discharge gap, branching and expansion of the microchannels, formation of a joint front of the spark’s shock wave and its motion) has been observed over a time from several nanoseconds to several hundred nanoseconds. Objects of a half-ring shape have been discovered. They have been identified as semispherical shock waves resulting from the formation of microcraters near sites where the microchannels touch the plane electrode.

Investigation of shock-wave deformation history from recovered structure

1986 ◽  
Vol 44 ◽  
pp. 434-435
Author(s):  
M.A. Mogilevsky ◽  
L.S. Bushnev
Keyword(s):  
Shock Wave ◽  
Plastic Deformation ◽  
Dislocation Density ◽  
Shock Waves ◽  
Shock Front ◽  
Single Crystals ◽  
Residual Deformation ◽  
Deformation Structure ◽  
Deformation History ◽  
Deformation Velocity

Single crystals of Al were loaded by 15 to 40 GPa shock waves at 77 K with a pulse duration of 1.0 to 0.5 μs and a residual deformation of ∼1%. The analysis of deformation structure peculiarities allows the deformation history to be re-established.After a 20 to 40 GPa loading the dislocation density in the recovered samples was about 1010 cm-2. By measuring the thickness of the 40 GPa shock front in Al, a plastic deformation velocity of 1.07 x 108 s-1 is obtained, from where the moving dislocation density at the front is 7 x 1010 cm-2. A very small part of dislocations moves during the whole time of compression, i.e. a total dislocation density at the front must be in excess of this value by one or two orders. Consequently, due to extremely high stresses, at the front there exists a very unstable structure which is rearranged later with a noticeable decrease in dislocation density.

Shock waves and the heterogeneity of materials

2006 ◽  
Vol 134 ◽  
pp. 237-241
Author(s):  
J. L. Dequiedt
Keyword(s):  
Shock Waves

Ionization relaxation behind strong shock waves in gases

1970 ◽  
Vol 102 (11) ◽  
pp. 431-462 ◽  
Author(s):  
L.M. Biberman ◽  
A.Kh. Mnatsakanyan ◽  
I.T. Yakubov
Keyword(s):  
Shock Waves ◽  
Strong Shock ◽  
Strong Shock Waves
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