The control of engineering materials without damaging their integrity or reliability is called Non-Destructive Testing, and methods developed for this purpose are called Non-Destructive Testing Methods. Various non-destructive test methods have been developed in order to control the discontinuities that may occur in the production phase or service conditions in the materials. Although the non-destructive test method to be used in the industry depends on different parameters depending on the type of material to be controlled, the size of the product, the number of parts, the type and location of the possible discontinuities expected in the part, in many applications, more than one method is applied in a combined manner to increase the inspection reliability. Although a wide variety of non-destructive testing methods, from simple to complex, have been developed today, the most common methods in industrial practice are given below.
- Liquid Penetrant Test
- Magnetic Particle Test
- Ultrasonic Test
- Radiographic Test
- Eddy Current Test
Magnetic Particle Test in Fluorescent Environment-crack appearance Liquid Penetrant Test-Detection of discontinuities open to the surface