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Non-Destructive Tests

Radiographic Test (RT)

Radiographic tests with the help of X-ray or gamma ray are particularly suitable for the identification of volume defects. Materials such as steel, cast iron and plastic quickly and reliably reveal their general quality and homogeneity.
With Zeros’ flexible laboratory trolley, our well-trained team of experts performs radiographic tests directly on the object. Depending on the material, we select the proper radiation technique from a wide range of possible processes and provide detailed information about the inspected object. > To find out more

Dye Penetration Test (PT)

The dye penetration test reveals the tiniest defect on the surface of metallic and low-porosity materials. It is applied when a particularly thorough and in-depth modus operandi is called for – e.g. in steel, bridge or container construction.

In the course of the penetration test, a coloured test liquid uses the capillary forces of fine ruptures in the surface and pores of the material to protrude in any irregularity of the inspected object. The ensuing application of a developer layer visualises the cavities, ruptures and other imperfections. > To find out more

Hardness Testing (HT)

The endurance of the material under the influence of forces gives some important indications about its mechanical qualities and the wear. Our experts execute hardness tests on surfaces and workpieces – both mobile or stationary. > To find out more

Magnetic Particle Testing (MT)

Magnetic particle testing tracks down defects near and on the surface of ferromagnetic materials such as cast iron and steel. Our experts magnetize the inspected object and use contrast agents (e.g. fluorescent, magnetisable particles) on the object to make the defect visible.

Those areas with a worse magnetic conductivity, inhomogeneity such as flaws will lead to a changing particle flow alongside the crack geometry. The defect becomes clearly visible.
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Visual Test (VT)

Material defects, irregularities in geometry and processing, as well as deficiencies in quality and texture of surfaces are often visible to the naked eye. For that reason, visual tests executed by experienced and certified employees are an important first step for assessing the quality of materials.

Even in industrial sectors in which such a test is not obligatory, the visual tests give a significant impetus for the execution of further testing procedures on complex systems engineering, pipes and containers.
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Ultrasonic Test (UT)

Is the tested material sound-conductive? In this case, an ultrasonic test would be the first choice in order to detect inhomogeneity and defects within the full volume of the inspected object.

As volume test method, the ultrasonic test benefits from the acoustic reflection and permeability at the interface of various materials. Thereby, the complete quality of pipes, weld seams and cast metal parts, joining plastics can be assured – beyond the examination of the material surface.
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Eddy Current Testing (ET)

The Eddy Current process detects microscopic irregularities either on or near the surface of electro-conductive materials. It takes advantage of the fact that both the inspected material and any containing contamination or defects are endowed with a specific electric conductivity and permeability.

The Eddy Current Testing combines the extreme sensibility with a fast testing speed. Especially for the testing of standard components, our experts rely on the Eddy Current Testing and thus, identify tiny deviationsnfrom the fixed reference area in less time.  > To read more

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