What is Non-Destructive Testing?
Non-destructive testing also known as NDT can also be referred to as NDE (non-destructive testing or evaluation) or NDI (non-destructive testing).
Non-destructive testing is used to detect defects (discontinuities) that may appear in materials such as cracks, porosity, slag encrustation, delamination, no fusion, no penetration in welds, corrosion testing. metal wear, composite material separation, material hardness measurement, concrete moisture test, material thickness measurement, paint film thickness, coating thickness, dimension determination and reinforcement positioning steel in concrete etc
Reasons why non-destructive testing is chosen by many businesses:
Here are the top reasons why nondestructive testing is used by many companies around the world:
– Economical: The most obvious answer to this question is that non-destructive testing is more attractive than destructive testing because it allows the material or object under test to be conserved during the test without being damaged. damage nothing, thus saving money and materials.
– Safety: non-destructive testing is also attractive because almost all non-destructive testing techniques (except radiographic testing) are harmless to humans.
– Efficiency: Non-destructive testing methods allow for a thorough and relatively quick assessment of materials, which can be critical to ensuring continued safety and performance on the job site.
– Accuracy: Proven non-destructive testing methods are accurate and predictable, both qualities you want when it comes to maintenance procedures to ensure the safety of people and the life of the device.
Current popular non-destructive testing methods:
There are several techniques used in non-destructive testing to collect different types of data, each requiring its own type of tools, training, and preparation.
Some of these techniques can allow the total volume of an object to be examined, while others only allow inspection of the surface. In the same way, some non-destructive testing methods will have different levels of detection depending on the type of material they are used for, and some techniques (such as Magnetic Particle Testing) will only work. acts on specific materials (those that can be magnetized).
There is no single “best” non-destructive testing method. The best method in all situations is the one that best meets the needs of the organization that uses it. In modern industry, speed, ease of use and range of applications are often preferred qualities in non-destructive testing solutions.
The ten most commonly used non-destructive testing techniques include:
– Visual inspection (VT, RVI).
– Acoustic Emission (AE) test.
– Magnetic Bead Test (MT).
– Ultrasonic Testing (UT, PAUT, TOFD, TFM, FMC).
– Vibration analysis (VA).
– Eddy current testing (ET, ECA).
– Liquid Penetration Test (PT). –
Leak test (LT).
– Laser inspection method (LM).
– Radiographic examination (RT, CR, DR).
Above is information related to non-destructive testing methods. If you need advice on boilers, industrial boilers, please contact KS Boiler for a free consultation!
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