TM 1-1520240-BD
Table 1-1. Ballistic Damage Modes (Continued)
DAMAGE
ALTERNATE
DEFENITION
TYPES OF MATERIALS AND
MODE
DESCRIPTIONS
STRUCTURES AFFECTED
PETALLING
JAGGED MATERIAL AROUND A HOLE
SHEET METAL PANELS,
THAT IS CURVED BACK FROM THE
WEBS, AND BULKHEADS.
SURFACE PLANE IN PETAL-LIKE
FASHION. (ASSOCIATED WITH PE-
NETRATION DAMAGE TO SHEET
METAL PANELS.
SPALL
CHIP
A CHIP OR FRAGMENT REMOVED
PRIMARILY THICK METAL
FROM THE SURFACE OR EDGE OF
COMPONENTS SUCH AS
THE MATERIAL, USUALLY ON THE
FORGINGS AND CASTINGS.
BACK SURFACE OF A PART THAT
HAS BEEN BALLISTICALLY PENE-
TRATED.
TEAR
SPLIT
A JAGGED, IRREGULAR SPLIT OR
PRIMARILY LIGHT METAL
RUPTURE IN THE MATERIAL
COMPONENTS SUCH AS
SKIN PANELS.
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