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Magnetic Particle Inspection
Training Course
Magnetic Particle Inspection is a non-destructive testing method
used for defect detection. MPI is a fast and relatively easy to
apply and part surface preparation is not as critical as it is for some
other NDT methods. These characteristics make MPI one of the most
widely utilized non-destructive testing methods. MPI uses
magnetic fields and small magnetic particles, such as iron filings to
detect flaws in components.
Because magnetization of certain metals is possible, it is possible to
reveal discontinuities by using a medium (iron powder) having magnetic
attraction. The medium is applied to the surface of the test object
after or during induction of a magnetic field. The sketch below shows a
build-up of the magnetic particle medium over the discontinuity in the
magnetized part. Magnetic Particle Testing is a relatively easy
and simple test method that can be applied at various stages of
manufacture and processing operations. The objective of Magnetic
Particle Testing is to insure product reliability by providing means
of:
A. Obtaining
a visual image of an indication on the surface of a material.
B.
Disclosing the nature of discontinuities without impairing the material.
C.
Separating acceptable and unacceptable material in accordance with
predetermined standards.
The only requirement from an inspect ability standpoint is that the
component being inspected must be made of a ferromagnetic material such
iron, nickel, cobalt, or some of their alloys. Ferromagnetic materials
are materials that can be magnetized to a level that will allow the
inspection to be effective. The method is used to inspect a variety of
product forms such as castings, forgings, and weldments. Many different
industries use Magnetic Particle Inspection for determining a
component's fitness-for-use. Some examples of industries that use
magnetic particle inspection are the structural steel, automotive,
petrochemical, power generation, and aerospace industries. Underwater
inspection is another area where magnetic particle inspection may be
used to test items such as offshore structures and underwater pipelines.
For course registrations please write us at
sales@ndt-consultants.co.uk
Level I
Syllabus
Level II
Syllabus
NDT Training
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