What is the elastic modulus of glass fiber reinforced plastic?
Glass fiber reinforced plastic is another name for glass fiber reinforced plastics, commonly known as FRP (Fiber Reinforced Plastics), that is, fiber reinforced composite plastic. Depending on the fiber used, glass fiber reinforced plastics (GFRP), carbon fiber reinforced plastic (CFRP), boron fiber reinforced composite plastics and so on are classified. It is a kind of composite material made of glass fiber and its products (glass cloth, band, felt, yarn, etc.) as reinforcing material and synthetic resin as base material. Fiber reinforced composites are composed of reinforced fibers and matrix. Fiber (or whisker) diameter is very small, generally below 10 mu m, less defects and smaller, fracture strain of about 30/1000, is brittle material, easy to damage, fracture and corrosion. The matrix is much lower in strength and modulus than fiber, but it can withstand large strains, often with viscoelasticity and elasticity, and is a ductile material.
Glass fiber reinforced plastics (FRP), also known as GFRP, that is, fiber reinforced plastics, generally refers to the use of glass fiber reinforced unsaturated polyester, epoxy resin and phenolic resin matrix. Reinforced plastics made from glass fiber or its products are called fiberglass reinforced plastics, or "GRP", and they are distinguished from tempered glass. Because of the different kinds of resins used, they are called polyester glass fiber reinforced plastics, epoxy glass fiber reinforced plastics and phenolic resin glass fiber reinforced plastics. It is light and hard, non conductive, stable in performance, high in mechanical strength, low in recycling and corrosion resistant. It can be used instead of steel to make machine parts, automobiles, ship shells, etc..
If so, the modulus of elasticity is 72000MPa, and the glass is isotropic, so the modulus of elasticity in the three directions is the value.
