Effects of the aluminum content on the shock wave pressure and the acceleration ability of RDX-based aluminized explosives

2014 ◽  
Vol 116 (14) ◽  
pp. 144906 ◽  
Author(s):  
Z. Q. Zhou ◽  
J. X. Nie ◽  
Z. C. Ou ◽  
J. F. Qin ◽  
Q. J. Jiao
Keyword(s):  
Shock Wave ◽  
Aluminum Content ◽  
Wave Pressure ◽  
Acceleration Ability ◽  
Shock Wave Pressure

scholarly journals A Lab-Scale Experiment Approach to the Measurement of Wall Pressure from Near-Field under Water Explosions by a Hopkinson Bar

2018 ◽  
Vol 2018 ◽  
pp. 1-15 ◽  
Author(s):  
Xiongwei Cui ◽  
Xiongliang Yao ◽  
Yingyu Chen
Keyword(s):  
Shock Wave ◽  
Near Field ◽  
Underwater Explosion ◽  
Experimental System ◽  
Hopkinson Bar ◽  
Wall Pressure ◽  
Pressure Loading ◽  
Target Plate ◽  
Wave Pressure ◽  
Shock Wave Pressure

Direct measurement of the wall pressure loading subjected to the near-field underwater explosion is of great difficulty. In this article, an improved methodology and a lab-scale experimental system are proposed and manufactured to assess the wall pressure loading. In the methodology, a Hopkinson bar (HPB), used as the sensing element, is inserted through the hole drilled on the target plate and the bar’s end face lies flush with the loaded face of the target plate to detect and record the pressure loading. Furthermore, two improvements have been made on this methodology to measure the wall pressure loading from a near-field underwater explosion. The first one is some waterproof units added to make it suitable for the underwater environment. The second one is a hard rubber cylinder placed at the distal end, and a pair of ropes taped on the HPB is used to pull the HPB against the cylinder hard to ensure the HPB’s end face flushes with loaded face of the target plate during the bubble collapse. To validate the pressure measurement technique based on the HPB, an underwater explosion between two parallelly mounted circular target plates is used as the validating system. Based on the assumption that the shock wave pressure profiles at the two points on the two plates which are symmetrical to each other about the middle plane of symmetry are the same, it was found that the pressure obtained by the HPB was in excellent agreement with pressure transducer measurements, thus validating the proposed technique. To verify the capability of this improved methodology and experimental system, a series of minicharge underwater explosion experiments are conducted. From the recorded pressure-time profiles coupled with the underwater explosion evolution images captured by the HSV camera, the shock wave pressure loading and bubble-jet pressure loadings are captured in detail at 5  mm, 10  mm, …, 30  mm stand-off distances. Part of the pressure loading of the experiment at 35  mm stand-off distance is recorded, which is still of great help and significance for engineers. Especially, the peak pressure of the shock wave is captured.

Influence of a shock-wave pressure gradient on the appearance of a microhardness maximum in α-Fe irradiated by a high-power ion beam

1998 ◽  
Vol 24 (10) ◽  
pp. 819-821 ◽  
Author(s):  
A. N. Valyaev ◽  
A. D. Pogrebnyak ◽  
S. N. Bratushka ◽  
V. I. Lavrent’ev ◽  
S. N. Volkov ◽  
...  
Keyword(s):  
Shock Wave ◽  
Pressure Gradient ◽  
High Power ◽  
Ion Beam ◽  
Wave Pressure ◽  
Shock Wave Pressure

scholarly journals Superconductivity of Mg/MgO interface formed by shock-wave pressure

2013 ◽  
Vol 488 ◽  
pp. 18-24 ◽  
Author(s):  
N.S. Sidorov ◽  
A.V. Palnichenko ◽  
D.V. Shakhrai ◽  
V.V. Avdonin ◽  
O.M. Vyaselev ◽  
...  
Keyword(s):  
Shock Wave ◽  
Wave Pressure ◽  
Shock Wave Pressure

Measuring Projectile Velocity using Shock Wave Pressure Sensors

2014 ◽  
Vol 64 (6) ◽  
pp. 499-501 ◽  
Author(s):  
Sankarsan Padhy ◽  
◽  
Susmita Panigrahi
Keyword(s):  
Shock Wave ◽  
Pressure Sensors ◽  
Projectile Velocity ◽  
Wave Pressure ◽  
Shock Wave Pressure

Study on Dynamic Characteristics of Shock Wave Pressure Sensor Assembly Based on Differential Method

2016 ◽  
Vol 14 (5) ◽  
pp. 536-541 ◽  
Author(s):  
Yang Fan ◽  
Kong Deren ◽  
Kong Lin ◽  
Wang Fang ◽  
Zhang Jinqiu
Keyword(s):  
Shock Wave ◽  
Dynamic Characteristics ◽  
Pressure Sensor ◽  
Differential Method ◽  
Wave Pressure ◽  
Shock Wave Pressure ◽  
Sensor Assembly

Superconductivity of Al/Al2O3 interface formed by shock-wave pressure

2015 ◽  
Vol 512 ◽  
pp. 6-11 ◽  
Author(s):  
A.V. Palnichenko ◽  
D.V. Shakhrai ◽  
V.V. Avdonin ◽  
O.M. Vyaselev ◽  
S.S. Khasanov
Keyword(s):  
Shock Wave ◽  
Wave Pressure ◽  
Shock Wave Pressure

Influence of shock-wave pressure up to 65 GPa on the crystal structure and superconducting properties of MgB2

2009 ◽  
Vol 29 (3) ◽  
pp. 414-421 ◽  
Author(s):  
A. N. Zhukov ◽  
N. S. Sidorov ◽  
A. V. Palnichenko ◽  
V. V. Avdonin ◽  
D. V. Shakhrai
Keyword(s):  
Crystal Structure ◽  
Shock Wave ◽  
Superconducting Properties ◽  
Wave Pressure ◽  
Shock Wave Pressure
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