Postmortem Analysis Using Different Sensors and Technologies on Aramid Composites Samples after Ballistic Impact.

摘要: This work focuses on the combination of two complementary non-destructive techniques to analyse final deformation and internal damage induced in aramid composite plates subjected ballistic impact. The first analysis device, a 3D scanner, allows digitalising surface tested specimen. Comparing with initial geometry, permanent residual (PBFD) can be obtained according impact characteristics. is significant parameter armours shielding design. second inspection technique based computed tomography (CT). It analysing state impacted sample, being able detect possible delamination fibre failure through specimen thickness. proposed methodology has been validated projectile geometries at different velocities, reaction force history determined piezoelectric sensors. Different loading states damages were observed type velocity. In order validate use correlation between velocity terms back face realised for both projectiles studied. addition, comparison results this measurement method those similar works, performed same range energy. showed that CT needed sample; however, highly expensive time-consuming method. scanner sensors perfectly could relevant develop numerical models or design armours.