MIL-DTL-46083D(MR)
APPENDIX A
BALLISTIC TESTING OF ALUMINUM ALLOY ARMOR, EXTRUDED, WELDABLE
A.1
SCOPE
A.1.1 Scope. This appendix covers the minimum ballistic limits for
acceptable requirements of aluminum alloy armor, extruded, weldable, when
tested in accordance with the provisions of this specification. When there is
a mutual agreement between contractor and procuring activity, this appendix
becomes a mandatory part of this specification and the information contained
herein is intended for compliance.
A.2
APPLICABLE DOCUMENTS
A.2.1
Government documents.
A.2.1.1 Specifications, standards, and handbooks. The following specifications,
standards, and handbooks form a part of this specification to the extent specified
herein. Unless otherwise specified, the issues of these documents are those listed
in the issue of the Department of Defense Index of Specifications and Standards
(DoDISS) and supplement thereto, cited in the solicitation (see 6.2).
STANDARDS
DEPARTMENT OF DEFENSE
MIL-STD-662 V50 Ballistic Test for Armor
(Unless otherwise indicated, copies of the above specifications, standards,
and handbooks are available from the Defense Automated Printing Service
(DAPS), Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.)
A.3
DEFINITIONS
A.3.1 Complete penetration, (CP). A complete penetration occurs when the
impacting projectile, or any fragment thereof, or any fragment of the test
specimen perforates the witness plate, resulting in a crack or hole which
permits light passage when a 60-watt, 110-volt bulb is placed proximate to the
witness plate.
A.3.2 Fair impact. An impact should be considered fair when an unyawed
fragment simulator or test projectile strikes an unsupported area of the
target material at a specified obliquity at a distance of at least two
projectile diameters from any previous impact or disturbed area resulting from
an impact, or from any crack, or from any edge of the test specimen.
A.3.3 Gap. A gap is the difference in fps between the high partial
penetration velocity and the low complete penetration velocity used to compute
the ballistic limit when the high partial penetration velocity is lower than
the low complete penetration velocity.
A.3.4 Partial penetration, (PP). Any impact which is not a complete
penetration should be considered a partial penetration.
A.3.5 Witness plate. A thin sheet located behind and parallel to the
ballistic test sample which is used to detect penetrating projectiles or spall.
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