Nondestructive flaw detection

The English name is non destructive testing (NDT for short). NDT (non destructive testing) is to use the characteristics of sound, light, magnetism and electricity to detect whether there are defects or non-uniformity in the tested object without damaging or affecting the use performance of the tested object, and to give the size, location, nature and quantity of defects, and then determine the technology of the tested object The general term of all technical means of status (such as qualified or not, remaining life, etc.). Nondestructive testing is a test method to check the surface and internal quality of the inspected parts without damaging the workpiece or raw materials.            The commonly used flaw detection methods are: X-ray flaw detection, ultrasonic flaw detection, magnetic particle flaw detection, eddy current flaw detection, & gamma; ray flaw detection, penetrant flaw detection (fluorescent flaw detection, dye flaw detection) and other physical flaw detection methods.