The geometry and the material properties of the component
to be inspected must always be considered when an
ultrasonic test is planned. In many cases these factors
can be challenging and careful examination of the case is
needed to ensure reliability of the inspection.
Simulation of the ultrasonic inspection using computer
program can be one part of necessary work providing tools
to study how the ultrasonic beam is propagating in
structure and what kind of signals can be expected to be
received from the reflectors in the inspection area. The
well done preparation including simulation of the
inspection usually decreases inspection time drastically
and therefore can also decrease total inspection costs.
There are also other aspects that can be improved with
simulations. For example health aspect in nuclear power
plants where it is essential to keep the inspection time
as low as possible due to radiation exposure.
The features and possibilities of Civa version 8
ultrasonic simulation program to take into account
material properties and geometry of the inspection object
are discussed in this article. Using examples some
possibilities are shown how the inspection of a
challenging nozzle geometry could be performed and which
echoes are seen in the simulation results.
|Title of host publication||SAFIR2010: The Finnish Research Programme on Nuclear Power Plant Safety 2007-2010 |
|Subtitle of host publication||Interim Report |
|Place of Publication||Espoo|
|Publisher||VTT Technical Research Centre of Finland|
|Publication status||Published - 2009|
|MoE publication type||Not Eligible|
|Series||VTT Tiedotteita - Research Notes|