Metallic layer material, reinforced with basalt fibers, as well as products made thereof
AssigneeAirbus Deutschland GmbH
InventorsAlexei Vichniakov, Hans-Juergen Schmidt
Life of this patent
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Abstract
A metallic layer material includes at least two metal sheets. Each sheet has a thickness of less than 1.5 mm. Between the sheets, a plastic layer is disposed, which is bonded to the metal sheets. The plastic layer comprises a plastic material and basalt fibers, and the basalt fibers have a modulus of elasticity exceeding 50 GPa. The basalt fibers may constitute 35-75% of the volume of the plastic layer. and may be comprised of 35-55 weight % of SiO2, 10-25 weight % of Al2O3, and 3-10 weight % of MgO. In aerospace applications and other applications requiring good specific strength, stiffness and damage tolerance, the metal sheets may be made of a metal having a tensile strength exceeding 0.20 GPa.
Claims18
A laminate, comprising:
- at least two metal sheets, each having a thickness of less than 1.5 mm;
- a plastic layer disposed between the at least two metal sheets;
- wherein the plastic layer is bonded to the at least two metal sheets;
- wherein the plastic layer comprises a plastic material and basalt fibers;
- wherein the basalt fibers constitute 35-75% of a combined volume of the plastic material of the plastic layer and the basalt fibers together;
- wherein the basalt fibers have a modulus of elasticity of 90-120 GPa;
- wherein the basalt fibers include 35-55 weight % of SiO2;
- wherein the basalt fibers include 10-25 weight % of Al2O3;
- wherein the basalt fibers include 3-10 weight % MgO ;
- and
- wherein the at least two metal sheets include a material with a tensile strength exceeding 0.20 GPa.
Structural element for an aircraft, comprising:
- at least two metal sheets, each having a thickness of less than 1.5 mm;
- a plastic layer disposed between the at least two metal sheets;
- wherein the plastic layer is bonded to the at least two metal sheets;
- wherein the plastic layer comprises a plastic material and basalt fibers,
- wherein the basalt fibers constitute 35-75% of a combined volume of the plastic material of the plastic layer and the basalt fibers together;
- wherein the basalt fibers have a modulus of elasticity of 90-120 GPa;
- wherein the basalt fibers include 35-55 weight % of SiO2;
- wherein the basalt fibers include 10-25 weight % of Al2O3;
- wherein the basalt fibers include 3-10 weight % MgO;
- and
- wherein the at least two metal sheets include a material with a tensile strength exceeding 0.20 GPa.
Dependencies are inferred from the claim text.