The nondestructive flaw detection, nondestructive testing and mean under the condition of no damage is detected objects, using materials internal structural abnormalities or defects caused by the heat, sound, light, electric, magnetic and other physical quantities changes, to detect all kinds of engineering materials, components, structures and other internal and surface defects. Nondestructive testing is widely used in metal materials, non-metallic materials, composite materials and their products as well as some electronic components.
Non-destructive testing, an acronym for non-destructive testing, refers to a means of testing materials or artifacts that do not impair or affect their future use performance or purpose. Can be found through the use of NDT, internal and surface defect of the existing materials or workpiece, can measure the geometrical characteristics of the workpiece and the size, the material or artifacts can determine internal composition, structure, physical properties and the state, etc.
Nondestructive testing technology is a newly developed comprehensive engineering science which developed rapidly after world war ii. Nondestructive Testing technology is also called the nondestructive inspection technology (N0n - Destructive Testing), as the name implies, is to make not be check material using properties and the morphology damage as the premise, through certain detection methods to detect or measure, display and evaluate material because of defective or organization structural differences exist and can make some physical properties of the phenomenon of physical parameters change, thus learning and assessment materials, product, equipment, components and biological properties, status, or the internal structure of a special kind of detection technology and so on. In the world, has been generally recognized at present: a country, a region, an industry, until the industrial technology level of an enterprise can reflect through the nondestructive testing technology.
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