Open AccessAnalysis of dynamic back face deformation of a body armor impact by a rifle bullet using 3D-DIC
Author(s) -
Yaoke Wen,
Haiyang Zheng,
J B Zhang,
Wenmin Yan,
Guangyu Cui,
Ch Xu
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1507/3/032051
Subject(s) - rifle , armour , deformation (meteorology) , acceleration , digital image correlation , materials science , face (sociological concept) , geology , structural engineering , composite material , physics , engineering , layer (electronics) , classical mechanics , metallurgy , social science , sociology
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.