Non Destructive Testing
(NDT) is a term used for the examination of materials
and components in such a way that allows materials to be
examined without changing or destroying their
usefulness. Henderson Manufacturing Company performs the
following types of non destructive testing:
Visual
Inspection:
Visual inspection is the one NDT method used
extensively to evaluate the condition or the
quality of a weld or component. It is easily
carried out, inexpensive and usually doesn't
require special equipment.
Magnetic
Particle Inspection:
Magnetic particle inspection is a method that
can be used to find surface and near surface
flaws in ferromagnetic materials such as steel
and iron.
Ultrasonic
Inspection:
Ultrasonic inspection uses sound waves of short
wavelength and high frequency to detect flaws or
measure material thickness.
Radiographic
Inspection:
X-ray or gamma rays are placed close to the
material to be inspected and they pass through
the material and are then captured on film This
film is then processed and the image is obtained
as a series of gray shades between black and
white. Careful inspection of the film will
reveal internal flaws that may not be found by
other inspection methods.
