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Failure Mechanisms in Fored, Layered, and Additive Manufactured Titanium due to Hypervelocity Impact: Experiments and Simulations

Conference ·
OSTI ID:1506447
 [1];  [1];  [1];  [2];  [3];  [3];  [2];  [2];  [2];  [2];  [1];  [1];  [1];  [1]
  1. Department of Mechanical Engineering, University of Nevada, Las Vegas, Las Vegas, Nevada
  2. National Security Technologies, LLC. (NSTec), Mercury, NV (United States)
  3. National Security Technologies, LLC, New Mexico Operations, Los Alamos Office
+ Show Author Affiliations
This article presents a study of dynamic failure events in forged, layered, and additive manufactured (AM) titanium alloy subject to hypervelocity impact. Experiments were conducted using a two stage light-gas gun, 0.22-caliber Lexan projectiles, and different types of titanium target plates. A four-channel Photonic Doppler Velocimetry (PDV) system was used to study the free surface velocities to provide an understanding of the different failure mechanisms in these materials. The experimental measurements were used to validate computational simulations, which describe the behavior of these materials under shock. It was determined that AM, forged titanium, and multi-layered stacks produce similar velocity profiles during the early stage of impact, with the AM targets exhibiting spall at lower velocities and the multi-layered stacks exhibiting vibrations between plates. Simulations of solid and layered forged materials provide a good match to experimental data.
Research Organization:
Nevada National Security Site/National Security Technologies, LLC (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP) (NA-10)
DOE Contract Number:
AC52-06NA25946
OSTI ID:
1506447
Report Number(s):
DOE/NV/25946--2718
Country of Publication:
United States
Language:
English

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Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Additive manufacturing
titanium
shock physics
PDV
computational simulation