TM 1-1500-204-23-7
GLOSSARY
AMPERAGE -
The strength of a current of electricity measured in amperes.
ATTENUATION (RT) -
Loss of energy caused by scattering of the radiation wave within a
material or at an Interface, or an electronic device in or attached to
the instrument.
ATTENUATION (UT) -
Loss of energy caused by scattering of the sound beam within a
material or at an interface, or an electronic device in or attached to
the instrument.
BEAM DIVERGENCE -
Spreading of a beam as it travels through material.
CENTRAL CONDUCTOR -
A conductor made of copper, aluminum, steel, or flexible cable that
is passed into or through an opening in a cylindrically-shaped part
or other shapes when applicable for the purpose of establishing a
circular field on the inside diameter.
CORROSION -
The gradual loss of material which is being eaten away by chemical
action.
CURIE POINT -
The temperature at which ferromagnetic metals become non-
magnetic and can no longer be magnetized by outside sources.
DEFECT -
A discontinuity which interferes with the usefulness of a part.
DEMAGNETIZATION -
The reduction to can acceptable level of the residual magnetism in
ferromagnetic materials.
DISCONTINUITY--
An interruption in the normal physical structure or configuration of a
part.
DWELL TIME -
The period of time that the liquid penetrant remains on the surface of
the part.
ELECTROMAGNETIC -
The magnetism created In a suitable metal core which has been
placed in the magnetic field created by passing electric current
through a coil of wire or a central conductor.
ELECTROMAGNETIC TESTING -
The nondestructive testing of materials (including magnetic materials)
which uses electromagnetic energy with frequencies less than that of
visible light to determine the quality of tested materials. This
term includes eddy current testing and magneto-inductive testing.
EMULSIFICATION-
The process of dispersing one liquid in a second immiscible liquid.
Glossary 1
