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...En naval materials science and engineering course notes u s academy chapter composites fiber reinforced polymers what are frp orientation fabrication vacuum bagging mechanical properties of a composite is simply thing made up different elements concrete for instance steel rebar they used to build wooden boats with iron frames typically when the word today it relates some type polymer material matrix that fibers resin holds together three commonly resins epoxy strong flexible resist cracking this good wood construction in which swelling shrinking can cause delamination polyester very low cost but somewhat more brittle than vinylester between performance reinforcing also vary including glass inexpensive fiberglass available types like e standard higher strength carbon high tensile modulus elasticity stiffness kevlar similar deflection or repeating chains organic mer basic unit there many them structure natural include rubber wool leather methane man from small molecules plastic figure re...