The study is imitating subulate tool penterite Armor Fabric by Method of Test for Puncture of Paperboard and Corrugated Fiberboard, and to ascertain the laver of Armor Fabric for absorb energy and arrestment, and any difference angle to compare the rank of defying ball, for understanding the sharp to the rank of Annor Fabric defy penterite energy, and penterite deep, the lose energy relation of sharp. The conclusion is profiling when the is few, the penterite deep is deep, because the stress centralize area is few, don't need more energy to penterite Armor Fabric.
