Experimental study of the dissipative efficiency of a multilayered protective structure against rockfall impact

To study spacecraft shield structure against hypervelocity impact of space debris and its protective performances, 25mm ballistic gun launching 12.7mm cylindrical debris is selected against Aluminum foam composite structure at high speed. Based on the experimental results and analyze the effects of Aluminum foam protective structure with different combinations, the result is that protective effects with Aluminum foam in front of glass fiber is better.

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Experimental study on the response of multi-layered protective structure subjected to underwater contact explosions

International Journal of Impact Engineering ◽

10.1016/j.ijimpeng.2016.10.004 ◽

2017 ◽

Vol 100 ◽

pp. 23-34 ◽

Cited By ~ 16

Author(s):

Jing Zhang ◽

Xing Hua Shi ◽

C. Guedes Soares

Keyword(s):

Experimental Study ◽

Protective Structure

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Experimental study on anti-penetration mechanism of bolted composite protective structure with limited span under impact of low-velocity projectile

Defence Technology ◽

10.1016/j.dt.2021.05.005 ◽

2021 ◽

Author(s):

Yu-jia Liu ◽

Dian Li ◽

Hai-liang Hou ◽

Zhu-jie Zhao ◽

Yue Xie

Keyword(s):

Experimental Study ◽

Protective Structure ◽

Low Velocity ◽

Penetration Mechanism

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The Experimental Research of the Multi-Layered Spaced Protective Structure with Stiffeners Penetrated by Projectile

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.44-47.360 ◽

2010 ◽

Vol 44-47 ◽

pp. 360-366

Author(s):

Zhong Guo Zhang ◽

Bin Gao ◽

Zhao Hui Liu

Keyword(s):

Experimental Study ◽

Failure Mode ◽

Experimental Research ◽

Steel Plate ◽

Damage Model ◽

Protective Structure ◽

Terminal Ballistics ◽

Mechanism Research

The experimental study method of the multi-layered spaced protective structure with stiffeners, which is called structural target, is presented penetrated by projectiles in this paper. Many parameters of the terminal ballistics effects and damage model of structural target are obtained after the experiment in which experimental projectiles are used to penetrate the target with stiffeners and steel plate target vertically, offering the basic experimental phenomenon and data for the mechanism research of projectile penetrating structural target (protective structure with stiffeners). In the meantime, the effect of the stiffeners on the failure mode of the structural target and the effect of the thickness and stiffness of stiffeners in the structural target are analyzed preliminarily. This paper could be helpful in the design of the protecting structures.

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Experimental study of strength of a multi-component protective structure element under tensile and impact loadings

Bulletin of the National Technical University «KhPI» Series: Dynamics and Strength of Machines ◽

10.20998/2078-9130.2017.39.115772 ◽

2017 ◽

Vol 1 (39) ◽

pp. 81-84

Author(s):

V. L. Khavin ◽

B. M. Kyrkach ◽

O. B. Kyrkach ◽

A. V. Stepuk

Keyword(s):

Experimental Study ◽

Protective Structure

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Experimental study on the restoration from a tilt-azimuth series for improvement in resolution

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010013955x ◽

1995 ◽

Vol 53 ◽

pp. 636-637

Author(s):

Norio Baba ◽

Norihiko Ichise ◽

Syunya Watanabe

Keyword(s):

Experimental Study ◽

Spherical Aberration ◽

Incident Beam ◽

Optical Parameters ◽

Beam Tilting ◽

Illumination Method ◽

Restoration Method ◽

Illumination Mode

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.

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