Dear Readers,
In continuation
with my earlier post of DFT, let us know the ECT (Eddy Current Thickness)
As you may aware
that Dry film thickness (DFT) or coating thickness is arguably the single most
important measurement made during the application and inspection of protective
coatings. Dry film thickness can be measured on either magnetic steel surfaces
or non-magnetic metal surfaces such as stainless steel or aluminum using a
digital coating thickness gauge.
Eddy current dry
film thickness gauges are used in eddy current testing (ECT), a non-destructive
test (NDT) method that determines dry film thickness based on the strength or
level of eddy currents induced in a metal by a probe containing a conducting wire
coil. The distance between the probe and the substrate, which is equivalent to
the coating thickness, inversely affects the eddy current strength level. So,
the strength of the eddy current deceases as the coating thickness increases.
An eddy current
dry film thickness gauge is a widely used non-destructive coating thickness
measurement tool because of its high sensitivity and wide range of thickness
capability.
For More Details about Dry Film Thickness (DFT) click Here
