Fiber-metal laminate

US9919495B2 · kind B2 · utility

Assignee

• GTM-Advanced Products B.V. · NL

Inventors

• Gregory M. Wilson · Eau Claire, US
• Rene Alderliesten · Delft, NL
• Jan Willem Gunnink · Nieuwerkerk aan den IJssel, NL

Key dates

• Filing date: Oct 31, 2012
• Grant date: Mar 20, 2018
• Expiry date: Oct 31, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31529
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

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 bya*(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 bya*(Vf−c)(b/(Vf-c)) with b=0.88 and c=0  (1c)0.10≦Vf<0.54  (2)0<Elam*Ecomp/(Emetal*tmetal2)<400*Vf kN/mm4  (3)wherein a=1200 kN/mm4; andEcomp=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 layerElam=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 combinationtmetal=thickness of the metal sheet in mm in the combinationVf=fiber volume fraction of the fiber-reinforced composite layer in the combination.