capability to manufacture high quality P/M parts for appli-
cations with more complex mechanical characteristics,
such as those for the aerospace and medical industries,
sectors that require zero-defective parts. One important
variable to be considered is porosity [5–7]. Nevertheless,
the optimization of the manufacturing process to comply
with such industry standards is time consuming, due to
the lack of fast and systematic instruments and procedures
for the inspection of the inner structure of parts. In recent
years, the applicability of several techniques for the
inspection of P/M parts, such as Eddy current testing or
X-ray imaging, has been investigated [8–10]. However,
studies have revealed that all of these techniques have
deficiencies that make them unavailable for a complete
and reliable flaw detection and density defect recognition.
Published studies of other traditional inspection methods,
such as resistance tests, gas permeability or magnetic