High velocity impact characterization of Al alloys for oblique impacts

Cited 1 time in webofscience Cited 0 time in scopus
  • Hit : 198
  • Download : 0
This paper describes the experimental and computational analyses of a high velocity aluminum projectile impact on an Al6061-T6 spacecraft inner wall at different oblique angles. Al2017-T4 spherical projectiles of 5.56 mm in diameter and 0.25 g in weight were chosen within the velocity range of 1000 +/- 200 m/s due to the limitation of the light gas gun. The energy absorbed was calculated by measuring the velocities before and after impact on the inner wall. The energy absorbed by the wall and the remaining energy carried by the projectile helped to estimate the severity of further damage to inner components. Afterwards, validation was done by using the commercially available software LS-DYNA with a dedicated SPH. On average, a 10% energy absorption difference between experimentation and simulation was found. By using C-SCAN, the damage area proportion of the total inner wall to impact penetration hole area was found to be on average 6%, 26% and 53% greater than the projectile cross sectional area for the oblique angle impacts of 30 degrees, 45 degrees, and 60 degrees, respectively. These findings helped to understand the relationship between the oblique impact event and the damage area on a spacecraft inner wall along with space debris cloud propagation and comparison with experimental results using LS-DYNA.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
2014-12
Language
English
Article Type
Article
Keywords

HYPERVELOCITY IMPACT

Citation

ACTA ASTRONAUTICA, v.105, no.1, pp.128 - 135

ISSN
0094-5765
DOI
10.1016/j.actaastro.2014.08.014
URI
http://hdl.handle.net/10203/195120
Appears in Collection
AE-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 1 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0