Non Destructive Testing (NDT) is a broad category of inspection techniques used in modern industry and science to evaluate a material, component, system or device without causing permanent damage to it. NDT is also known as Non Destructive Inspection (NDI). Unlike destructive inspection that relies upon visual observation for assessing material and component condition; nondestructive inspection relies on non-invasive methods to obtain data regarding condition and ability to withstand loads. If you are looking for more tips, check out SalemNDT eddy current machines | SalemNDT eddy current testing machines.
The primary technique of nondestructive testing is Electric Field Excitation (EE), which uses a strong electric field to excite atoms in an electrically conductive material and/or its interface thus forcing the atoms out of their orbital states and to move between the conducting and non-conducting path. By creating a very high resistance to the flow of charge, the atoms are forced to exit the tested area. The other main technique of NDT is Electron Scattering Spectroscopy (ES) that uses an ion beam to scatter electrons about the surface of the material being tested. Another important type of nondestructive testing is the use of Ultrasonic Methods for testing the quality of materials and components.
Among all the different techniques of non-destructive testing, the most widely used is the Non Destructive Testing (NDT) technique. This method of inspection was first developed in the early 20th century and was used widely in the United States in the early part of the twentieth century until the Second World War. A significant advancement in NDT technology was the development of the electromagnetic energy which was later used in the production of sound. This made it possible for nondestructive testing to be done with the help of sound waves. This technology advanced rapidly and so did interest in the subject and today non Destructive Testing is extensively used worldwide in various fields such as nuclear fuel processing plants, bridges, telecommunications systems, military instruments, semiconductor fabrication and analysis, electrical and optical appliances, medical devices, aerospace applications and more.