Nondestructive Testing
Magnetic Particle Testing:

Magnetic particle inspection processes are non-destructive methods for the
detection of defects in ferrous materials. They make use of an externally
applied magnetic field or DC current through the material, and the principle
that the magnetic susceptibility of a defect is markedly poorer (the magnetic
resistance is greater) than that of the surrounding material.

Basic Principles of Magnetic Particle Testing
Hydrostatic Testing

Hydrostatic testing is a means of testing pressure vessels. Vessels need to
be tested to ensure they are still able to hold pressure at their respective
pressure rating.

Basic Principles Of Hydrostatic Testing
Ultrasonic Testing:

Ultrasonic Testing (UT) uses high frequency sound energy to conduct
examinations and make measurements.

Basic Principles of Ultrasonic Testing
Eddy Current Testing:

Eddy currents are created through a process called electromagnetic
induction. When alternating current is applied to the conductor, such as
copper wire, a magnetic field develops in and around the conductor. This
magnetic field expands as the alternating current rises to maximum and
collapses as the current is reduced to zero. If another electrical conductor
is brought into the close proximity to this changing magnetic field, current
will be induced in this second conductor. Eddy currents are induced
electrical currents that flow in a circular path. They get their name from
“eddies” that are formed when a liquid or gas flows in a circular path
around obstacles when conditions are right.

Basic Principles for Eddy Current Testing
Acoustic Emissions Testing:

Acoustic Emission (AE) is a naturally occurring phenomenon whereby
external stimuli such as mechanical loading generate sources of elastic
waves. AE occurs when a small surface displacement of a material is
produced. This occurs due to stress waves generated when there is a
rapid release of energy in a material, or on its surface. The wave generated
by the source of the AE, or, of practical interest, in methods used to
stimulate and capture AE in a controlled fashion for study and/or use in
inspection, quality control, system feedback, process monitoring and others.

Basic Principles of Acoustic Emissions Testing