In this example case study, we use data from a customer that manufactures a large volume of automotive parts. The customer produces and inspects steering racks that are about 20 inches long and each one needs to be inspected in both directions. Their parameters would be like other manufacturers producing automotive parts such as engine locks, cylinder heads, crankshafts, camshafts and steering racks. In most non-destructive testing processes only one of these needs can be satisfied at a time.
Oil & Gas Non-Destructive Testing
Magnetic Particle Testing And Inspection Engineering Essay
Magnetic Particle Inspection MPI or MT processes are non-destructive testing methods for the detection of surface and sub-surface defects in ferrous materials. These use an externally applied magnetic field or electric current into the material, and the principle is, that the magnetic flux will break or leave the part at the area of the flaw. The presence of a surface or near surface flaw defect in the material causes distortion in the magnetic flux , which in turn causes leakage of the magnetic fields at the flaw. This deformation of the magnetic field is not limited to the immediate locality of the defect but extends for a considerable distance; even through the surface and into the air if the magnetism is intense enough.
Magnetic Particle Testing Level 2
Beta This is a new way of showing guidance - your feedback will help us improve it. This document assists in the assessment and inspection of NDT applied on plant and how that supports the continued safe operation of the plant. Pressure vessels, storage tanks and other safety critical components including pipework and valves are designed to contain liquids, gases and solids such that a loss of containment does not occur.
The generated magnetic flux can attract fine-grained magnetic particles in order to get visible the indications. The control technique is very sensitive and can detect defects even on parts covered with thin protective layers for example paints , although with a slight decrease in sensitivity. The detection of the defects can be carried out using magnetic particles applied dry or by means of a suspension in a suitable liquid agent. The fluorescent magnetic particles inspection technique reaches higher sensitivity. The mode of operation of the Yoke is based on electromagnetic principle: when a coil or solenoid is crossed by electricity, a magnetic field is generated.