fiber and metal laminate, assembly of a fiber and metal laminate, use of an assembly and method for obtaining sheet metal thickness and fiber volume fraction

摘要

A fiber-metal laminate of mutually bonded fiber-reinforced composite layers and metal sheets comprises a combination of a fiber-reinforced composite layer and an adjacent metal sheet, in which combination the properties satisfy the following relations: Elam*Ecomp/(Emetal*tmetal2) has a value between a lower bound given by a*(Vfc)(b/(Vfc)) with b=0.36 and c=0.3(1a) and zero when Vf0.3,(1b) and an upper bound given by a*(Vfc)(b/(Vfc)) with b=0.88 and c=0(1c) 0.10Vf0.54(2) 0Elam*Ecomp/(Emetal*tmetal2)400*Vf kN/mm4(3) wherein a=1200 kN/mm4; and Ecomp=tensile Young's modulus of the fiber-reinforced composite layer in kN/mm2 in the combination, taken in the direction of highest stiffness of the composite layer Elam=tensile Young's modulus of the total fiber-metal laminate in kN/mm2, taken in the same direction as for Ecomp Emetal=tensile Young's modulus of the metal sheet in kN/mm2 in the combination tmetal=thickness of the metal sheet in mm in the combination Vf=fiber volume fraction of the fiber-reinforced composite layer in the combination.