Abstract
The magnetic particle method is one of the oldest and simplest nondestructive tests. The method is applied for many components, mainly in the automotive industry. In case that for a given serial component the needed testing sensitivity is once defined, the most important requirement then is to guarantee a permanently constant realization of this sensitivity with each individual testing procedure. In order to ensure that with the method of magnetic particle testing of safety-components reproducible results are obtained, the constant quality of the applied magnetic-particle inspection medium is the most important requirement. A water-based ready-concentrate for the fluorescent test method serves as an example for the discussion of the specific acceptance criteria like sensitivity, magnetic-particle content, operating life time, corrosion inhibition properties, fluorescence ability and wetting properties.
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