Results 221 to 230 of about 78,206 (273)

Increasing the performance of the bullet core by changing the geometry. an experimental and numerical study. [PDF]

Forensic Sci Med Pathol
Çelik E, Koç A.
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Ballistic limit equations for spacecraft shielding

International Journal of Impact Engineering, 2001
This paper provides equations describing the ballistic performance capability of meteoroid/orbital debris (M/OD) shield systems employed on the International Space Station (ISS). Hypervelocity impact (HVI) tests and analysis were used in developing the semi-empirical ballistic limit equations (BLE).
Eric L. Christiansen, Justin H. Kerr
openaire   +3 more sources

Ballistic limit determination of aluminum honeycombs—Experimental study

Materials Science and Engineering: A, 2008
Abstract Honeycombs are widely used as core structures in sandwich panels as energy absorbers. In this paper the ballistic limit velocity, energy dissipation and damaged zone of metallic honeycombs at normal impact are studied experimentally and compared with analytical formulae. In experiments aluminum 5052-H39 honeycombs are impacted by rigid steel
A. Alavi Nia, S.B. Razavi, G.H. Majzoobi
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Ballistic limit equations in ballistic and shatter regions

International Journal of Impact Engineering, 2008
Abstract Ballistic limit equations are used to predict the damage of spacecraft subjected to impacts by space debris and meteoroids. This paper presents two new ballistic limit equations for impact velocities in the ballistic and shatter regions, respectively.
L. Ding, C. Li, B. Pang, W. Zhang
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Limitations to ballistic transport in semiconductors

IEEE Electron Device Letters, 1981
Limitations to the range of ballistic transport in semiconductors are discussed on the basis of electron correlation within an ensemble. It is shown that transport equations, correct in the fast transient regime, include these correlation effects.
D.K. Ferry, J. Zimmermann, P. Lugli, H. Grubin   +3 more
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Carbon Nanotube Ballistic Thermal Conductance and Its Limits

Physical Review Letters, 2005
Calculations of the quantum-mechanical ballistic thermal conductance of single-walled carbon nanotubes, graphene, and graphite are presented, which explain previous experimental results, and directly disprove earlier theoretical calculations. The ballistic thermal conductances are smaller than had been previously thought, whereas the maximum sample ...
N, Mingo, D A, Broido
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Ballistic fractures — the limited value of existing classifications

Injury, 2005
We have assessed a number of ballistic fracture classifications but were unable to identify one that could adequately grade the severity of the injury, assist in determining the optimal treatment or predict outcome. Many of the existing classifications are based on experimental studies or radiological appearance and do not take into account the soft ...
P A E, Rosell, J C, Clasper
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Limitations of split-gate ballistic electron waveguides

Journal of Applied Physics, 2003
We study the ballistic conductance of electron waveguides created by lateral depletion of the two-dimensional (2D) electron gas caused by negatively biased split surface Schottky gates. The maximal number of resolved steps of the quantized conductance staircase and their temperature stability are examined as functions of slit width w, depth d of the 2D
O. E. Raichev, P. Debray
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A new Ballistic Limit Equation for thin tape tethers

Acta Astronautica, 2016
Abstract Electrodynamic tethers represent one of the possible means to de-orbit defunct satellites from Low-Earth-Orbit at end of life. However, tethers survivability to orbital debris impacts is still debated because of the large area they expose to the space environment.
FRANCESCONI, ALESSANDRO, GIACOMUZZO, CINZIA, BETTIOL, LAURA, LORENZINI, ENRICO   +3 more
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UNDERSTANDING BALLISTIC LIMIT SCALING LAWS

Ballistics 2025
A series of critical perforation velocity experiments have been performed, where tungsten alloy spheres were shot at thin mild steel plates. The experiments were repeated at four geometric scales; with projectile diameters of 1.5, 3, 5, and 10 mm; and corresponding plate thicknesses of 0.872, 1.7, 2.9, 5.8 mm.
F. Gokstorp, S. Andersson, P. Appelgren, M. Ingvarsson, P. Lundberg   +4 more
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