scholarly journals Wraparound PDV for Measuring the Impactor Velocity History in High‐Hazard Plate Impact Experiments, STL-029-20, Year 1

2020 ◽  
Author(s):  
Brandon La Lone ◽  
Matthew Staska ◽  
Ruben Valencia ◽  
Richard Allison ◽  
Chusia Moua
Keyword(s):  
Plate Impact ◽  
High Hazard ◽  
Impact Experiments ◽  
Velocity History ◽  
Impactor Velocity

Computational Simulations of Dynamic Compaction of Dry Sand

2012 ◽  
Vol 598 ◽  
pp. 516-519
Author(s):  
Yu Qing Ding ◽  
Wen Hui Tang ◽  
Xian Wen Ran ◽  
Xin Xu
Keyword(s):  
Computational Analysis ◽  
Dynamic Compaction ◽  
Back Surface ◽  
Computational Results ◽  
Two Dimensional ◽  
Computational Simulations ◽  
Plate Impact ◽  
Arrival Times ◽  
Dry Sand ◽  
Impact Experiments

The computational analysis of plate impact experiments on dry sand utilizing the Mie- Grüneisen (MG) equation of state and the P-α compaction model were investigated in this study. A number of two dimensional axial symmetric computations were performed by using the hydrocode AUTODYN. The computational results were compared with the particle velocity on the back surface of the rear plate measured by the VISAR system and the first shock-wave arrival times detected by piezoelectric pins in the samples respectively. It was found that the P-α compaction model was more accurately reproduce the experimental data than the MG EOS.

Damage Characteristics of Dynamically Induced Incipient Spall in Ultrapure Aluminum

2018 ◽  
Vol 910 ◽  
pp. 130-136
Author(s):  
Hui Peng ◽  
Xiao Yang Pei ◽  
Ji Dong Yu ◽  
Mei Lan Qi ◽  
Jing Song Bai ◽  
...  
Keyword(s):  
Cross Section ◽  
Surface Profile ◽  
Chromatic Aberration ◽  
Profile Measurement ◽  
Plate Impact ◽  
Damage Characteristics ◽  
3D Surface Topography ◽  
Impact Experiments ◽  
Surface Profile Measurement ◽  
Ductile Fracture Process

A series of plate-impact experiments were performed to study the damage characteristics of incipient spall in ultrapure aluminum (99.999%). Surface profile measurement system based on the axial chromatic aberration was used to measure the cross section of “soft-recovered” samples and reconstruct the metallographic and 3D surface topography. Statistical analyses show that the size distribution, coalescence condition and connectivity factor of the voids are regularly affected by loading conditions. Based on this finding, the mechanisms that control the damage properties and evolution process of dynamic fracture are analyzed in detail. The results of this research offer an experimental quantitative microstructure description of the ductile fracture process.

Pressure-Shear Plate Impact Experiments at High Pressures

2020 ◽  
Vol 6 (4) ◽  
pp. 489-501
Author(s):  
C. Kettenbeil ◽  
Z. Lovinger ◽  
S. Ravindran ◽  
M. Mello ◽  
G. Ravichandran
Keyword(s):  
High Pressures ◽  
Plate Impact ◽  
Shear Plate ◽  
Impact Experiments

scholarly journals Plate impact experiments and simulation on porous graphite

2014 ◽  
Vol 500 (18) ◽  
pp. 182016 ◽  
Author(s):  
D Hébert ◽  
G Seisson ◽  
I Bertron ◽  
J M Chevalier ◽  
C Thessieux ◽  
...  
Keyword(s):  
Plate Impact ◽  
Porous Graphite ◽  
Impact Experiments

Experimental developments to obtain real-time x-ray diffraction measurements in plate impact experiments

1999 ◽  
Vol 70 (10) ◽  
pp. 4008-4014 ◽  
Author(s):  
Y. M. Gupta ◽  
K. A. Zimmerman ◽  
P. A. Rigg ◽  
E. B. Zaretsky ◽  
D. M. Savage ◽  
...  
Keyword(s):  
Real Time ◽  
X Ray Diffraction ◽  
Plate Impact ◽  
X Ray ◽  
Impact Experiments
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