High velocity impact test of a hybrid sandwich composite shield with unrestrained boundary fabric
| Autor: | Chun-Gon Kim, Jin-Bum Moon, Soon Ho Yoon |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
business.industry 020502 materials Composite number chemistry.chemical_element 02 engineering and technology Penetration (firestop) Structural engineering 021001 nanoscience & nanotechnology law.invention 0205 materials engineering chemistry law Aluminium Shield Light-gas gun Electromagnetic shielding Ceramics and Composites Specific energy Boundary value problem Composite material 0210 nano-technology business Civil and Structural Engineering |
| Zdroj: | Composite Structures. 153:60-68 |
| ISSN: | 0263-8223 |
| DOI: | 10.1016/j.compstruct.2016.05.088 |
| Popis: | This paper proposed a new hybrid composite shielding system aimed at increasing the specific energy absorbing rate. The hybrid composite shield is composed of an initial bumper, an intermediate layer, and a rear plate. Fabric, employed as an intermediate layer, is inserted between the front bumper and the rear back plate with an unrestrained boundary condition with minimum space. The main energy absorbing mechanism of the new hybrid composite shield is fabric pull-out through the penetration hole at the rear plate. Various types of hybrid composite shielding systems with five different kinds of rear wall were fabricated and tested to verify the realization of the fabric pull-out mechanism. High velocity impact tests were performed for each hybrid composite shield design by using a 2-stage light gas gun that can accelerate an aluminum ball of a diameter of 5.56 mm to 1 km/s. The fabric pull-out mechanism was realized when the rear wall was made of a weak plate such as PMMA, PA, or PE. Furthermore, the energy absorbing rate of the hybrid composite shield was much higher when the fabric pull-out mechanism was realized. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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