Analysis of dynamic back face deformation of a body armor impact by a rifle bullet using 3D-DIC

Body armor that defeats the threat can still cause severe trauma by striking the thorax with its back face deformation (BFD). In this study, the 3D digital image correlation (DIC) technology was adopted to capture the dynamic BFD of a ceramic/UHMWPE body armor impact by a rifle bullet. The shape and...

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Bibliographic Details
Published in:Journal of physics. Conference series 2020-03, Vol.1507 (3), p.32051
Main Authors: Wen, Y K, Zheng, H, Zhang, J B, Yan, W M, Cui, G Y, Xu, Ch
Format: Article
Language:English
Subjects:
Acceleration
Armor
Digital imaging
Impact velocity
Physics
Polyethylenes
Static deformation
Thorax
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Summary:Body armor that defeats the threat can still cause severe trauma by striking the thorax with its back face deformation (BFD). In this study, the 3D digital image correlation (DIC) technology was adopted to capture the dynamic BFD of a ceramic/UHMWPE body armor impact by a rifle bullet. The shape and size of the BFD time histories, deformation velocity, acceleration and line slices profile on armor back face were obtained. The maximum BFD height can reach to 34.3 mm within about 1.2 ms, and then slowly decreases to the static deformation height of about 24mm for the impact velocity 675.4 m/s. The maximum deformation velocity and acceleration are 129.9 m/s and 1.29e6 m/s^2, respectively.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1507/3/032051