Non Destructive Testing

Destructive testing is not always the choice as non destructive testing. It is also needed after the construction of the structure. Non destructive testing (NDT) is a wide group of analysis techniques used in science and technology industry to evaluate the properties of a material, component or system without causing damage. The main advantage of NDT is that the sample can be used even after the test. CALC provides non destructive testing facilities both at the laboratory as well as at onsite.

CALC provides the Non destructive testing facilities to its clients and has following NDT testing facilities:




NDT Testing for Concrete


Rebound hammer:

Rebound hammer test is done in order to find out the the compressive strength of the concrete by using rebound hammer as per IS: 13311(part 2) - 1992.

Ultrasonic Pulse Velocity test

Ultrasonic pulse velocity is one of the methods of testing concreter on site. UPV test is conducted to determine the voids and cracks in the the hardened concrete. It measures the the time of the travel of an ultrasonic pulse passing through the concrete which is generated with the help of a pulse generator and is received by a pulse receiver. It is an ideal method for the ensuring that the concrete is uniform. CALC provides facility for the onsite UPV test.

NDT Testing for metal welding


This is an expensive technique compared to the other non destructive techniques and is predominantly used to detect internal flaws in casting and weldments. This technique involves the use of penetrating gamma or X radiation to examine the parts and products for imperfections. Radiation is directed onto a film and possible imperfections are shown as the density changes in the film inthe same manner as an X-ray shows broken bones. CALC provides facility of radiography.

  • Ultrasonic Test

  • Dye Penetration Test

  • Magnetic Particle Inspection

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