| THE EDDY CURRENT TECHNIQUE |
It is based on the induction of
an electromagnetic field in
the component undergoing
inspection. It can be applied
to electrically conducive but
non-ferromagnetic materials,
and can detect various forms
of internal and external
damage to the object being
tested.
an electromagnetic field in
the component undergoing
inspection. It can be applied
to electrically conducive but
non-ferromagnetic materials,
and can detect various forms
of internal and external
damage to the object being
tested.
It uses a probe with a built-in
bobbin coil that induces eddy
currents in adjacent mate-
rial. Should the probe
encounter flaws as it is pulled
through the tube, the eddy cur-
rents are interrupted, causing
an impedance change in the
coil. The impedance change
is measured and displayed on
a monitor.
bobbin coil that induces eddy
currents in adjacent mate-
rial. Should the probe
encounter flaws as it is pulled
through the tube, the eddy cur-
rents are interrupted, causing
an impedance change in the
coil. The impedance change
is measured and displayed on
a monitor.
Eddy Current testing is very
sensitive to most defects that
occur in tubes. It is critical to
use correct eddy current
techniques and procedures for
conclusive results.
sensitive to most defects that
occur in tubes. It is critical to
use correct eddy current
techniques and procedures for
conclusive results.
| METHODS: Click above to see the three primary techniques which are; Differential Absolute Multi-frequency |
| Details |
| Details |
