학술논문
Experimental and numerical study on foam core sandwich panels with different projectile shapes.
Document Type
Article
Author
Source
Subject
*SANDWICH construction (Materials)
*PROJECTILES
*GAS cylinders
*POLYPHENYLENETEREPHTHALAMIDE
*FOAM
*COMPUTER simulation
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Language
ISSN
0094-243X
Abstract
Sandwich structures have excellent energy absorbing capabilities and can be used in applications where the area of focus is impact protection. The response of foam core sandwich panels with carbon [C3/Foam/C3] and Kevlar [K3/Foam/K3] face sheets subjected to projectile with flat and hemispherical was compared experimentally and numerically. The sandwich specimens with different face sheets were fabricated using Vacuum Assisted Resin Transfer Moulding(VARTM) method. A single-cylinder gas gun was used for accelerating projectiles with 9.00mm diameter with different velocities between 40m/s-120m/s. From the experimental results the damaged area, depth of damage is correlated with the nose shape and velocity. The numerical simulation carried out using LS-DYNA showed good correlation with the experimental results. The results shows a superior impact force carrying capacity for the kevlar face sheet sandwich panel in comparison with the carbon face sheet sandwich panel impacted at the same velocity and projectile shape. [ABSTRACT FROM AUTHOR]