TM 1-1520-240-BD Table 1-1.  Ballistic Damage Modes DAMAGE ALTERNATE DEFINITION TYPES OF MATERIALS AND MODE DESCRIPTIONS STRUCTURES AFFECTED BREAK GAP OR OPENING IN A WELD OR WELDMENTS: BONDED BONDLINE. COMPONENTS. BUCKLE BEND, KINK, DEFORMATION CAUSED BY A COM- LIGHT, AXIALLY LOADED COLLAPSE, PRESSIVE OVERLOAD (USUALLY MEMBERS SUCH AS STIFF- CRIPPLE, AXIAL) WHICH CAUSES THE MATEI- ENERS AND STRINGERS. DISTORTION RIAL TO BE PERMANENTLY DIS- PLACED FROM ITS NATURAL SHAPE OR FORM. CRACK FRACTURE A NARROW BREAK OR FRACTURE IN ALL BRITTLE MATERIALS IN- THE SURFACE OR THROUGH THE CLUDING METALS, COMPOS- MATERIAL. ITES, AND PLASTICS. CRUSHED COLLAPSED DEFORMATION CAUSED BY A COM- SANDWICH PANELS AND PRESSIVE OVERLOAD (USUALLY LIGHT STRUCTURES SUCH TRANSVERSE) WHICH CAUSES THE AS FAIRINGS. MATERIAL TO BE PERMANENTLY DIS- PLACED FROM ITS NATURAL SHAPE OR FORM. DEBONDED SEPARATION OF AN ADHESIVE BONDED COMPONENTS . BONDLINE SUCH AS SANDWICH PANELS. DENT AN INDENTATION OR DEPRESSION ALL MATERIALS WHICH WHICH DOES NOT RUPTURE THE YIELD (PLASTICALLY DE- MATERIAL. STRESS, ESPECIALLY LIGHT METAL SKINS. FASTENER SHEARED, STRIPPED, LOOSE, OR ALL MECHANICALLY DAMAGE MISSING FASTENERS. ASSEMBLED COMPONENTS. FRETTING WEAR REMOVAL OR SCORING OF THE ALL MECHANICALLY SCORING SURFACE OF THE MATERIAL ASSEMBLED COMPONENTS CAUSED BY FRICTION FORCES. WHICH EXPERIENCE RELA- TIVE MOVEMENT BETWEEN FAYING SURFACE. GOUGE GROOVE A GROOVE, CHANNEL, OR CAVITY PRIMARILY THICK, RELATIVE- SCOOPED OR CUT FROM THE SUR- LY SOFT MATERIALS SUCH FACE OF THE MATERIAL. AS CASTINGS. HOLE PUNCTURE AN OPENING OR CAVITY IN OR ALL MATERIALS AND STRUC- PENETRATION THROUGH THE MATERIAL. TURES. 1-24