Non Destructive Testing (NDT)

Electromold Australia Pty Ltd has the ability to complete Liquid Penetrant Non Destructive Testing (NDT) to determine any fractures, cracks or fatigue in our customer’s parts prior to completing processing or as one off service.

Our NDT facility is one of the largest in the Southern Hemisphere with the ability to test parts in a variety of sizes.  We are a NADCAP accredited NDT Supplier

Our Liquid penetrant testing method is utilized to detect material defects open to the surface or to detect open surface cracks. Fluorescent dye penetrant examinations are performed under black light conditions to ensure the highest detectability for very fine fatigue cracks.

The principle of liquid penetrant test is that the liquids used enter small openings such as cracks or porosities by capillary action. The rate and extent of this action are dependent upon such properties as surface tension, cohesion, adhesion and viscosity.

They are also influenced by factors such as the condition of the surface of material and the interior of the discontinuity. For the liquid to penetrate effectively, the surface of the material must be thoroughly cleaned of all foreign matter that would obstruct the entrance of the liquid into the defect.

After cleaning, the liquid penetrant is applied evenly over the surface and allowed to remain long enough to permit penetration into possible discontinuities. The liquid is then completely removed from the surface of the component and either a wet or a dry developer is applied. The liquid that has penetrated the defects will then bleed out onto the surface, and the developer will help delineate them.

This will show the location and general nature and magnitude of any defect present.

The Dye penetrant test (DPT) based on liquid penetrant is a sensitive extremely versalite and a very reliable method of test.

Some of the applications for our NDT Service:

  • Fracture critical parts
  • Fatigue
  • Weld Inspection
  • Post Machining

If you require any further information regarding this process or any of Electromold’s plating processes, please contact us on (03) 9464 0922 and one of our technical staff will be able to assist you.