The non-destructive NDT test covers a wide range of analysis techniques to examine the properties of materials, components, products, welds, or systems without causing damage. They play a vital role in human life today.
This test can be considered as a tool for quality management.
Also, the welding inspector must have the appropriate technical and behavioral knowledge to weld inspection and non-destructive NDT tests, which are mentioned below some of the important points of these features.
Non-destructive welding tests have 3 common features :
1- A physical phenomenon creates an effect.
2- They interpret and evaluate the created effect.
3- They use an intermediate environment and a physical phenomenon.
Non-destructive NDT tests are descriptive for NDT testing
In this test, the person performing the non-destructive NDT test and test must have a high level of knowledge of how each of the non-destructive tests work so as not to waste resources, money and time, because performing these non-destructive tests does not work for anyone. And passing specialized courses and experience and high skills of welding inspectors and technicians are required.
Type of test :
Non-destructive PT test (penetrant test)
MT Non-Destructive Test (Magnetic Particle Test)
Non-destructive testing UT (ultrasonic testing)
Non-destructive ED test (eddy current test)
Non-destructive RT test (radiographic test)
Non Destructive Test PAUT (Metal Array Test)
Non-destructive TOFD test (welding diffraction time test)
Non-destructive testing of PA (ultrasonic test of fuzzy welding array)
Non-destructive testing ET (welding rotation flow test)
Non-destructive testing VT (welding eye inspection test)
Non-destructive LT test (leak test)
NR Non-Destructive Test (Neutron Radiographic Test)
Non-destructive VA test (vibration analysis test)
Non-destructive AE test (sound emission test)
Non-destructive IR test (infrared test)
The purpose of the Non-Destructive Welding Test (NDT) is to describe defects in the weld and the area affected by the heat and the base metal.
Details to consider during the welding process:
1- Boiling temperature
2- Cleaning, shaving, grinding and welding
3- Structural defects and welding discontinuities
Details that can be checked in the post-welding stages:
1- Existence of any unfilled cavities, destruction, cracks, overlapping in the weld
2- Compatibility of welding with design and method requirements
3- Acceptance of welding according to the appearance and quality of construction
4- Accuracy of welding dimensions, using a ruler or welding tape measuring tool