Non-Destructive Tests
Damage, cracks, gaps, etc. on the surface or interior of the materials. non-damaging tests to detect undesirable errors
It is called Nondestructive Testing. NDT is formed from the initials of the words 'Non-Destructi Testing' in English.
Errors can occur during the production of the metallic part, as well as due to effects such as heat and load in the place where it is used.
These may cause the part to become damaged and dysfunctional in the future. this may also disable the system in which the part is used.
Liquid penetrating test
It is used to detect defects on surfaces. A colored liquid substance, which has the ability to penetrate very small capillary cracks that cannot be seen with the naked eye, is applied to the surface. Then, when the surface is wiped, the overflowing liquid is cleaned, but the liquid that seeps into the cracks remains. Cracks are detected by visual inspection or under black light.
Magnetic particle test
It is used on metals that can be magnetized. The metal is magnetized by applying current and magnetic powder is poured on it.
Errors are detected by collecting dust at the places where the error is located.
radiographic test
An x-ray of the part is taken. Defects both on the surface and inside are detected
Ultrasonic testing
It is detected by making use of the back reflection feature of the sound waves sent to the part.