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*(Vf−c)(b/(Vf−c)) with b=0.36 and c=0.3 (1a) and zero when Vf≰0.3, (1b) and an upper bound given by a*(Vf−c)(b/(Vf−c)) with b=0.88 and c=0 (1c) 0.10≰Vf<0.54 (2) 0<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.
IMPROVED FIBER-METAL LAMINATE
VERBESSERTES FASERMETALLLAMINAT
STRATIFIÉ FIBRES-MÉTAL AMÉLIORÉ
2016-03-16
Patent
Electronic Resource
English
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