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Advances in Materials Science and Engineering
Volume 2017, Article ID 7218482, 11 pages
https://doi.org/10.1155/2017/7218482
Research Article

Fragmentation of Millimeter-Size Hypervelocity Projectiles on Combined Mesh-Plate Bumpers

Department of Mechanical Engineering, University of Manitoba, E2-327 EITC, 75A Chancellors Circle, Winnipeg, MB, Canada R3T 5V6

Correspondence should be addressed to Aleksandr Cherniaev; ac.abotinamu@veainrehc.rdnaskela

Received 29 March 2017; Accepted 12 July 2017; Published 16 August 2017

Academic Editor: Laszlo Toth

Copyright © 2017 Aleksandr Cherniaev and Igor Telichev. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This numerical study evaluates the concept of a combined mesh-plate bumper as a shielding system protecting unmanned spacecraft from small (1 mm) orbital debris impacts. Two-component bumpers consisting of an external layer of woven mesh (aluminum or steel) directly applied to a surface of the aluminum plate are considered. Results of numerical modeling with a projectile velocity of 7 km/s indicate that, in comparison to the steel mesh-combined bumper, the combination of aluminum mesh and aluminum plate provides better fragmentation of small hypervelocity projectiles. At the same time, none of the combined mesh/plate bumpers provide a significant increase of ballistic properties as compared to an aluminum plate bumper. This indicates that the positive results reported in the literature for bumpers with metallic meshes and large projectiles are not scalable down to millimeter-sized particles. Based on this investigation’s results, a possible modification of the combined mesh/plate bumper is proposed for the future study.