The object of this study is to investigate the penetration characteristics according to the change of stacking sequences and curvature radius in the composite laminated shell. They are staked to [02/902]S and [0/902/0]s, their interlaminar number are two and four. We manufactured the composite laminated shells with various curvature radiuses. Curvature radiuses of composite shell are 100, 150, 200mm and ∞ (it's meaning flat-plate). In general, the kinetic energy before and after impact increased linearly in all specimens, and the absorbed energy of the specimen [02/902]S with a small number of the interlaminars was higher than specimen [0/902/0]s.

Abstract
 1. Introduction
 2. Method
  2.1 Manufacturing specimen
  2.2 Experimental Method
 3. Experimental results and examination
  3.1 The impact velocities and penetration characteristics
  3.2 Comparison of the energy absorption due to the curvature
  3.3 Cross-sectional shape and penetrating mode of the specimen
 4. Conclusion
 References

• Yang, Hyun Soo(Professor, Shipbuilding and Marine Engineering Department, Kunjang University College)