Advantages Of Some Common NDT Tests

Non destructive testing methods are generally used for controlling the quality of various materials. These techniques help in detecting the presence of internal or surface flaws, or identifying metallurgical condition of materials without disturbing their integrity or suitability for an application in any way. They can be utilised either for individual investigation or checking a material entirely for production quality regulation.

At present, certain methods of non destructive testing in Melbourne are used extensively by various manufacturing industries. They include radiography, dye penetrant testing, ultrasonic flaw detection, magnetic particle inspection and eddy current electromagnetic induction. The suitability of these procedures are often determined by advantages that each offers.

So let’s take a look at the individual advantages of these methods:


One of the reasons why radiographic testing has so high demand is because the results of the tests are presented pictorially. In addition to that, there are also permanent records of the procured information and they can be referred to anytime & anywhere. Radiography is appropriate for nearly any material and very effective for thin sections also.

Dye Penetrant Testing

Another popular NDT method, dye penetrating testing, is preferred particularly for its ability to ensure qualitative analysis. It is quite easy to execute and also highly effective for locating surface-breaking fissures in non-ferrous metals. The technique is also aptly suited for automatic testing.

Ultrasonic Flaw Detection

This commonly used non destructive method proves to be very useful when there is a need for testing thickness & length less than or equal to 30 feet. It can easily determine the type, size and position of defects. Being quite portable, it provides extreme sensitivity whenever necessary and can also be absolutely automated. It needs access to just one side of the surface, and consumables are normally not used.

Magnetic Particle Inspection

MPT is yet another easy-to-use quantitative testing method that can be viewed as well as automated. It also allows for using parts of automatic defect recognition like bars and billets, where a unique camera takes images of the defect.

Eddy Current Electromagnetic Induction

Eddy current testing is capable of determining several conditions of any conducting material, including hardness, permeability, composition, conductivity and defects. The information obtained from the test results are usually in easily comprehensible terms.

The above mentioned information comes in handy when there is a need to determine which NDT method would be ideal for a particular application.


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