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Experimental and Numerical Study of Penetration in Sandwich Structure with Ceramic Core

Mazaheri, Hashem | 2010

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 40572 (08)
  4. University: Sharif University of Technology
  5. Department: Mechanical engineering
  6. Advisor(s): Naghdabadi, Reza; Sohrabpour, Saeed
  7. Abstract:
  8. In this research, penetration in a new confined ceramic-metal structure is studied experimentally and numerically. In this new structure, ceramic tile is confined on its front face by an aluminum foil. First, penetration experiment in 5 mm thick Al 1100 plate carried out. The ballistic limit velocity is obtained about 140 m/s. The difference between experiment and numerical simulation is lower than 5 percent. Then penetration analysis of 10 mm thick Alumina tiles is carried out experimentally and numerically in confined and unconfined conditions. Ceramic tiles are in square shape with 50 mm side length. The ballistic limit velocity for unconfined and confined ceramic tiles are obtained about 145 and 167 m/s respectively. Thus the ballistic limit of the confined tile is increased 15 percent while the weight increases only 1.4 percent. Also energy absorption is increased in confined structure for the velocity range 150 – 250 m/s. Finally penetration experiment is carried out on ceramic-metal structures for both confined and unconfined conditions. The results showed that energy absorption increases about 5 percent in ceramic-metal structure with ceramic tile confined in front face. This result is valid for velocity about 223 m/s
  9. Keywords:
  10. Energy Absorption ; Ceramic-Metal Structure ; Confined Ceramic ; Limit Velocity

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