Tests that allow inspection of all or part of the material without damaging the penetrant test properties without damaging them are called non-destructive testing methods. Non-destructive testing allows you to find out where errors originate in the area being examined and correct the errors. This test increases the reliability of the material produced.

Penetrant test, which is one of the methods used in the detection of surface defects, is exposed to the surface of the penetrant fluid, which has penetrated with the capillary effect (capillary), and some symptoms are obtained by the developer.

Symptoms

• If porous structure, round symptoms are obtained.
• If discontinuities are crack type, linear symptoms,
• It can be used to detect expected surface defects in all metallic or non-metallic materials in the industry.

It is used to detect faults on the surfaces of non-ferromagnetic materials used to detect faults on their surfaces. It is a fairly common, simple and fast method. It is mainly related to the capillary action event. Penetrants used in non-destructive testing have low tension and high capillary action.

It is defined as a liquid penetrant, i.e. non-destructive inspection method for the detection of cracks or pores on the surfaces of nonporous, smooth materials.