Non–Destructive Evaluation (NDE) is used to determine various activities within the field, comprising –
Liquid Penetrant Inspection (LPI))
LPI is a non-destructive method of revealing discontinuities that are open to the surface of solid
and essentially Non-Porous Materials. Indications of wide spectrum of flow sizes can be found regardless of the configuration of theworkplace regardless of flow orientation.
LPI depends mainly a Penetrant effectively wetting the surface of a solid workpieces or specimen.
Types of Fluorescent Penetrant
The penetrants can be classified into:
Products that can be Tested
Types of Industries
Magnetic Particle Inspection (MPI)
MPI is a method of locating surface and subsurface discontinuities in ferrous (ferromagnetic) materials. Ferromagnetic materials include most of iron, nickel and cobalt alloys. Many of the preparation for hardening steels such as 12-4 ph, 17-7 ph, stainless steels are magnetic after ageing.
Detectable Discontinuities (Flaws)
The method can be employed for:
Types of Defects
Ultrasonic Inspection (UI/UT)
Ultrasonic inspection is a non-destructive method in which beam of high-frequency sound waves. are introduced into materials for detection of internal and subsurface flows in materials. The sound waves travel through the material with some attenuation loss of energy at discontinuities< and are reflected at interfaces. The reflected beam is displayed and then analyzed to define the presence and location of flaws or discontinuities.
Some of the major types of parts ultrasonically inspected for the presence of flaws are: