Non-destructive testing

In materials science, non-destructive testing (NDT) consists of a number of research techniques, which give the researcher an idea about the quality of a product, without damaging the object. We can offer different types of NDT methods:

Magnetic examination:
In this examination we check the surface errors of ferromagnetic materials. Contrast paint is placed on the surfaces and any defects are visible at once through a magnetic field and fluid with magnetic particles. This has the following advantages:

  • Quick inspection of large surfaces
  • Immediate detection of indications on and just below the surface

Penetrant examination:
We can find defects which have an open connection with the surface. We place a colour on the parts to be checked, followed by a developing agent. This agent removes the colourant from the cracks, so that indications become visible. This has the following advantages:

  • Minor surface defects can be quickly detected.
  • Large surfaces can be examined.
  • Immediate detection of indications.

The surfaces must be completely free of coating for the above-mentioned examinations. We can do this for you with our mobile burner.

Eddy current examination:
A method whereby the removal of coating is not necessary is the eddy current examination or eddy current testing (ET). With this we can simply discover defects on and just below the surface of conductive materials. We can observe defects through a generated magnetic field that causes eddy currents in the material. This has the following advantages:

  • Coating does not have to be removed
  • Suitable for finding defects both on and just below the surface.
  • Immediate detection of indications
  • No fluids are used

Proof of outcome examination:

Irrespective of the outcome of the examination, a proof of examination is always drawn up in order to share the findings of the examination. If the examination shows that the indications do not fall within the acceptance criteria, a rejection report will be drawn up, including the indications and an advice. When the indications fall within the acceptance criteria, an approval report will be drawn up. This is the proof that the outcome of the examination is positive.