Magnetic particle inspection is a method of detecting invisible cracks and other defects in ferromagnetic materials, such as iron and steel. This method of inspection is a non-destructive test, which means it is performed on the actual part without damage to the part; it is not applicable to nonmagnetic materials.
PLC (Programmable Logic Control) Based Magnetic Particle Inspection machine is a Semi- Automatic machine.
A programmable logic controller (PLC) is a small computer, often located inside a larger electrical control panel, programmed to run an entire system or specific equipment. Unlike a typical computer, a PLC can only be used to handle programming language for machine automation.