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- 論文の詳細を見る
Laminated plates are one of the simplest and most widespread practical applications of composite materials. Glass roving cloth/polyester composite plates with three ply laminas are impacted and damaged by foreign projectiles, such as steel balls or steel rods fired from an air gun. All the present experiments are conducted at speeds below the critical speed required for perforation. In this speed range, it is observed that the dominant energy absorbing fracture mechanisms are delamination between laminas and debonding between fibers and a matrix. Both fracture mechanisms are observed in the same square area with its diagonals in 0-90° fiber directions. It is found that the total damaged area and the initial kinetic energy of the projectile have a linear relationship. Finally, the explanation of the linear relationship is tried out in terms of the energy.
- 日本複合材料学会の論文
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