TM 55-2840-254-23
Definition
Abrasion . . . . . . . . . . . . . . . . . . . . . . . . . . . . A roughened surface.
B
Bend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Distortion in a part.
Binding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . To confine and restrict the liberty of a free moving part,
material, or component. May cause serious damage if a
chafing force is being imposed.
Break . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Separation of a part.
Buckling . . . . . . . . . . . . . . . . . . . . . . . . . . . . A large-scale deformation of the original contour of a part,
usually due to pressure or impact from a foreign object,
structural stresses, excessive localized heating, high pressure
differentials, or to any-combination of these.
Burn . . . . . . . . . . . . . . . . . . . . . . . . . A rapid destructive oxidizing action usually caused by
higher temperatures than the material can withstand struc-
turally. Change in color and appearance often indicates this
condition.
A rough or sharp edge on a hole or corrner, usually caused
Burr . . . . . . . . . . . . . . . . . . . . . . . . .
by machining, sometimes by wearing.
c
The trade name for a manufactured aluminum oxide abra-
Carborundum. . . . . . . . . . . . . . . . . .
sive similar to natural emery. It is used for grinding wheels
and for abrasive papers.
A worn or rubbed area caused by friction: refers to the wear
Chafing . . . . . . . . . . . . . . . . . . . . . . .
produced by parts such as fuel, air and oil lines rubbing
against other parts.
Breaking away of metallic particles.
Chipping . . . . . . . . . . . . . . . . . . . . . . . . . .
Concave . . . . . . . . . . . . . . . . . . . . . . . . . . . . A hollow surface curved like the inside of a bowl.
Contamination (Foreign Material) . . . . . . . . Any foreign substance such as metal chips, Iint, rust, and
water that would be harmful to the functioning of a part
or system.
