N.D.T: Introduction and their importance
N.D.T: Introduction and their Importance
Non-destructive Testing is one part of the function of Quality Control and is complementary to other long
established methods.
By definition non-destructive testing is the testing of materials, for surface or internal flaws or metallurgical
condition, without interfering in any way with the integrity of the material or its suitability for service.
There are various varieties of methods available to inspect the offshore structures or any structural system
without causing any physical harm neither to the material nor to the member.
The technique can be applied on a sampling basis for individual investigation or may be used for 100%
checking of material in a production quality control system.
Also an assurance that the supposedly good is good. The technique uses a variety of principles; there is no
single method around which a black box may be built to satisfy all requirements in all circumstances.
Introduction
What follows is a brief description of the methods most commonly used in industry, together with details of
typical applications, functions and advantages.
The methods covered are:
- Radiography
- Magnetic Particle Crack Detection
- Dye Penetrant Testing
- Ultrasonic Flaw Detection
- Eddy Current and Electro-magnetic Testing
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