Apparatus and method to measure back face signature of armor
AssigneeHoneywell International Inc.
InventorsASHOK BHATNAGAR, HENRY GERARD ARDIFF, DAVID A. HURST, THOMAS YIU-TAI TAM, TYLER BARTELT, BRIAN DUANE ARVIDSON
Life of this patent
Estimating the term…
Abstract
An apparatus and method for evaluating the backface signature of flat panel ballistic resistant composites with accuracy, repeatability and improved correlation to the expected backface signature of shaped ballistic resistant composites in actual field use.
Claims21
-20. (canceled)
An apparatus for evaluating the backface signature of a fibrous material, the apparatus comprising:
- a) a deformable backing medium having a front surface;
- b) a spacer defining a space adjacent to said deformable backing medium, the spacer spacing a fibrous material that is positioned adjacent to said deformable backing medium apart from the front surface of said deformable backing medium;
- and
- c) optionally, at least one support for supporting a fibrous material in a position adjacent to the front surface of said deformable backing medium.
An apparatus for evaluating the backface signature of a fibrous material, the apparatus comprising:
- a) a deformable backing medium compliant with NIJ Standard 0101.06, the deformable backing medium having a front surface;
- said deformable backing medium being contained in an open face fixture;
- b) a spacer defining a space adjacent to said deformable backing medium, the spacer spacing a fibrous material that is positioned adjacent to said deformable backing medium apart from the front surface of said deformable backing medium by at least about ⅛ inch (0.3175 cm), said spacer comprising an element having a border and an interior cavity defined by said border, wherein said deformable backing medium is exposed through said cavity, and wherein said spacer is positioned in direct contact with front surface of the deformable backing medium;
- and
- c) at least one support for supporting a fibrous material in a position adjacent to the front surface of said deformable backing medium.
A method for evaluating the backface signature of a fibrous material, the method comprising:
- I) providing an apparatus for evaluating the backface signature of a fibrous material, the apparatus comprising:
- a) a deformable backing medium having a front surface;
- b) a spacer defining a space adjacent to said deformable backing medium, the spacer spacing a fibrous material that is positioned adjacent to said deformable backing medium apart from the front surface of said deformable backing medium;
- said spacer comprising an element having a border and an interior cavity defined by said border, wherein said deformable backing medium is exposed through said cavity;
- and
- c) optionally, at least one support for supporting a fibrous material in a position adjacent to the front surface of said deformable backing medium;
- II) positioning a fibrous material adjacent to said deformable backing medium, wherein said spacer is positioned between the fibrous material and said deformable backing medium, the fibrous material being spaced apart from the front surface of said deformable backing medium by said spacer;
- III) firing at least one projectile at the fibrous material at a target location that corresponds to the interior cavity of said spacer, and such that the projectile impacts the fibrous material at a location that corresponds to the interior cavity of said spacer, and wherein the impact of the projectile on the fibrous material causes a depression in the deformable backing medium;
- and
- IV) measuring the depth of the depression in the deformable backing medium.
Dependencies are inferred from the claim text.