There are Numerous Non-Destructive tests used to
evaluate the base metal to be joined as well as completed welds. However these
all NDT shares several common elements, these essential elements are summarized
below:
A Source of Probing energy or Medium
A Discontinuity must cause change or alteration of
probing energy
A means of detecting this change
A means of indicating this change
A means of observing or recording this indication so
that an interpretation can make
Over the years Numerous Non-Destructive Testing
Methods have been developed, each one has associated with its various advantage
& Limitations.
Followings are the Noted NDT Methods
Visual Testing (VT)
Penetrant Test (PT)
Magnetic Particle Test (MT)
Radiographic Test (RT)
Ultrasonic Test (UT)
Eddy Current Test (ET)
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