| Autor: |
D'Ambrosio, Ryan A., Sietins, Jennifer M., Baechle, Daniel M. |
| Předmět: |
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| Zdroj: |
International Sampe Technical Conference; 2018, p1072-1086, 15p |
| Abstrakt: |
Armor often consists of panels with little or no curvature, compared to the size scale of the projectile. However, previous studies on ballistic impact of helmets indicate that curvature improves the ballistic limit (V50) of laminated composite materials. In an effort to better understand the effects of curvature on ballistic performance, this paper examines three different curvatures in composite laminates. Panels consisting of four plies of woven Kevlar® were created using patterned spherical dome molds and the VARTM (vacuum assisted resin transfer molding) process. Using a gas gun, panels were impacted with 5.6 mm steel spheres. X-ray computed tomography was used to examine the extent of delamination between the different dome geometries. Through the application of the Langlie method it was found that V50 of the domed panels was up to 33% higher than a four-ply flat panel. However, mass-normalization indicated that the increase in V50 may not be worth the increase in areal density compared to a flat panel. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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