of the most widespread NDT methods in mechanical equipment of industrial
installations for the characterization of erosion and deterioration is the
thickness measurements with the Ultrasonic method. Mistras Group Hellas offers
high level thickness measurement services on pipes, pressure vessels,
boilers, tanks etc, by its experienced and certified inspectors.
measurement is achieved by placing the UT probe on the object surface.
Local or general reductions of thickness can be located and measured with
high precision. The instruments that are used for the measurement are
portable and light with possibilities of saving the measurements data in a
use of different probes offers the capability to perform thickness
measurements in inaccessible surfaces, on very thin plates, on high
temperature environments, above paint (thru-coat or echo to echo
functions) as well as on surfaces with intense local corrosion without any
surface smoothing required (use of pencil type probes).
with direct results.
object can be in-service.
surface preparation required.
be made without removal of the paint.
can be made in inaccessible regions using suitable probes.
In many cases
there is the possibility of measuring corroded surfaces without the need
of cleaning the surface (using special probes).
calculations can be made with thickness reduction observations with
repeated measurements in the same points.
high temperature surfaces possible.
corrosion profile on B-Scan form.
All the measurements
and measurements points can be stored in electronic form e.g. Excel,
Access or AutoCAD and can be statistically processed and compared with
Mistras Group Hellas
also provides corrosion mapping
services using automated ultrasonic systems.