Armor plate
First Claim
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1. An armor plate comprising:
- a transformation layer comprised of a material having a tensile strength in a range between about 50 MPa to about 500 MPa and a deformation before failure of at least 20%, the transformation layer producing lattice waves when struck by a projectile; and
an absorption layer disposed adjacent to the transformation layer such that when the transformation layer is struck by a projectile, the lattice waves generated within the transformation layer propagate into the absorption layer, the absorption layer being comprised of a base material having a first dopant dispersed therein, the base material being comprised of a metal or a ceramic, wherein the first dopant creates phonon absorption centers in the absorption layer that absorb the lattice waves.
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Abstract
An armor plate transforms projectile energy into solid-state lattice waves and facilitates absorption of these waves at different wavelengths. For high frequency lattice waves, dopants are used for absorbing the lattice waves and converting them to thermal energy. Heavy dopants and layered materials can also be use for reflecting lattice waves to facilitate attenuation through absorption. A spreading layer can also be used for dispersing non-absorbed lattice waves.
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Citations
35 Claims
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1. An armor plate comprising:
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a transformation layer comprised of a material having a tensile strength in a range between about 50 MPa to about 500 MPa and a deformation before failure of at least 20%, the transformation layer producing lattice waves when struck by a projectile; and an absorption layer disposed adjacent to the transformation layer such that when the transformation layer is struck by a projectile, the lattice waves generated within the transformation layer propagate into the absorption layer, the absorption layer being comprised of a base material having a first dopant dispersed therein, the base material being comprised of a metal or a ceramic, wherein the first dopant creates phonon absorption centers in the absorption layer that absorb the lattice waves. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An armor plate comprising:
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a transformation layer comprised of a material having a tensile strength in a range between about 50 MPa to about 500 MPa and a deformation before failure of at least 20%; and an absorption layer comprising a first dopant dispersed in the absorption layer, the absorption layer disposed adjacent to the transformation layer such that when the transformation layer is struck by a projectile, lattice waves generated within the transformation layer can propagate into the absorption layer, the absorption layer being comprised of a plurality of sublayers having a maximum thickness of less than 100 μ
m. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. An armor plate comprising:
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a transformation layer comprised of a material having a tensile strength in a range between about 50 MPa to about 500 MPa and a deformation before failure of at least 20%, the transformation layer producing lattice waves when struck by a projectile; and an absorption layer disposed adjacent to the transformation layer such that when the transformation layer is struck by a projectile, lattice waves generated within the transformation layer propagate into the absorption layer, the absorption layer being comprised of a base material having a first dopant dispersed therein, the base material being comprised of a metal or a ceramic and the dopant included in a concentration that breaks lattice symmetry, wherein the dopant causes absorption of lattice waves propagated from the transformation layer. - View Dependent Claims (35)
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Specification