NON DESTRUCTIVE TESTS

Research defects

Aequalis is able to examine castings, forged and machined parts in different materials (steels, aluminum and magnesium alloys, brass and bronze, titanium, plastics and composites) in order to detect signs of possible defects that might affect the use of the product. Non-destructive tests are performed by ITANDTB qualified personnel (Committee for the National Aerospace Non Destructive Testing) according to EN 4179 / NAS 410 and dedicated plants.

CONTRAST LIQUID PENETRANTS

The liquid penetrant inspection is a control system suitable for nonferromagnetic materials. The inspection allows to make evident with high sensitivity and accuracy each discontinuity surface, although very small, such as cracks, porosity, laps. In the method with contrast penetrant, a visible liquid (usually red) is made to penetrate the discontinuity surface of the workpiece. After removal of excess fluid and the application of a detector (usually a silica based amorphous liquid absorbent) is highlighted each discontinuity due to the color contrast of liquid detector.

FLUORESCENT LIQUID PENETRANTS

This method uses a fluorescent liquid penetrant (with different sensitivities depending on the type of detail and material examined), visible after the application of the detector after illumination with black light (Wood lamp). Aequalis is equipped with an inspection facility with the ability to run checks with post-emulsifiable fluorescent penetrants according to the main mechanical and aerospace standards (EN 571, ASTM E 1417, AMS 2644, MIL , ASME, DIN, UNI, BS, AFNOR).

MAGNETIC PARTICLES

Magnetoscopic inspection (MT) exploits ferromagnetism of some metals to highlight the anomalies of the flow lines of the magnetic field of a near surface defects. The flow lines, which represent the strength of the local magnetic field near a discontinuity, as for example a micro-cracks, a cavity or an inclusion, are gathering or dispersing, turning locally and creating an anomaly in the magnetic field the edges of the defect. Just spray the surfaces or wet them with suitable suspensions of ferromagnetic powders, colored or fluorescent, for aligning the particles along the flow lines of the magnetic field. The different colors of powder or fluorescent light emitted in the visible spectrum when they are irradiated with ultraviolet light (Wood's light), will highlight each of their concentration and consequently, the outcrop or subcortical defects. The Magnetoscopy allows to highlight surface and subcortical defects not detectable with liquid penetrant, provided that the disturbance of the magnetic field in their vicinity can come to the surface to be examined.