On the comparison of absorbing regions methods
Résumé
Numerical simulation methods are very useful in Non Destructive Testing because they save time, lower cost and allow for the investigation of diverse experimental configurations. However, these methods consume relatively long CPU time and system memory. Different solutions exist to minimize these limitations. Absorbing region methods are among them when its possible. These kinds of regions are also made to minimize or eliminate the spurious reflections at the boundaries of the simulated structure for more efficient signal processing. These methods are employed in many other fields such as geophysics, telecommunication, etc. There are different ways to design appropriate absorbing regions. Different approaches will be investigated and compared to show the advantage and limits of each one. Some examples will be presented.
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