Non Destructive Testing (NDT): What is it and Why is it so Important?
What Really is this Process?
Non Destructive Testing, also known as NDT, is a process of examining, analyzing, and evaluating elements, materials, and assemblies. It is done to identify any anomaly, lack of coherence or difference in characteristics of these things without breaking, degrading, or ruining the functionality of the parts or the assembly. In other words, after the examination is over, the elements are still usable.
How is it Any Different from Destructive Processes?
This is very different from the common methods of destructive examination where the process is carried out using ‘samples.’ These samples have to undergo destruction to make the evaluation successful. Also, their number is extremely limited. However, in an NDT Testing Laboratory in Kolkata, materials are used instead of samples. There is no restriction of the number and no destruction as well.
While destructive procedures help in the analysis of physical properties of the samples, the Non Destructive procedure is best for studying discontinuities of the materials instead. The former can determine aspects like ductility, resistance, tensile strength, and fracture toughness. But, the latter is used to ascertain material characteristics.
What are the Methods of Analysis?
The name of each analytical method is based either on the medium that penetrates into the material or on the device used to perform the examination. The most frequently applied types include Radiography Test (RT), Ultrasonic Test (UT), Ultrasonic Thickness Measurement (UTM), and Liquid Penetrate Inspection (LPI).
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Other common methods include Acoustic Emission Test (AE), Ground Penetrating Radar (GPR), Electromagnetic Test (ET), Guided Wave Test (GW), Microwave Test, Magnetic Flux Leakage (MFL), Leak Test (LT), Magnetic Particle Testing (MT), Laser Test Method (LM), Vibration Analysis (VA), Thermal or Infrared Test (IR), Visual Test (VT), and Neutron Radiographic Test (NR).
What is the Scope of its Application?
Non Destructive analysis of materials is extensively used in manufacturing industries. The methods are applied during the in-service examination of manufactured products to check their integrity. The motive is to control the process of their manufacturing, lower their cost of production, and maintain the high quality of these items.
Why is the Process so Important?
During a Non Destructive analysis, the examiner cannot cause damage to any part of the material or component. He cannot scratch, dent, cut, or alter the surface, but still has to detect flaws, if any. These types of analyses are very important if the aesthetic appeal of the material is to be maintained. Also, if it is a toxic or hazardous material in question, an NDT is a safe process for sure.
The methods are also good for maintenance tasks. They help in ensuring that an industrial plant is in good health. Depending on the results found in the analysis, it can be determined whether the plant should carry on with its operations or whether it should pause or completely stop.
Further, the process holds great significance in the field of engineering, where machine errors need to be detected day in and day out. In the medical field, such Non Destructive procedures help in assessing various equipments like X-rays, endoscopes, and Ultrasound scanners. In the maritime industry, devices like radar and sonar can be tested using the methods.
Thus, you see that this process is needed for more than one reason. Are you in need of a material analysis without damaging the item? If yes, then look no further than Non Destructive Testing and in that purpose visit us at http://www.mangalamtesting.com/
