Where is NDT used?
Nowadays, Nondestructive testing (NDT) is used almost everywhere in every operational industry. It is widely used most often for process control during manufacturing. Using NDT one can detect surface and subsurface discontinuities in end products like casting, welds, brazing, ceramics and composite materials. Quality-control inspections of electronic components ris done so that components fit alignments and gaps in assembly. NDT is also used in building and bridge construction, aircraft aviation and aerospace, automotive and space component manufacturing and aircraft overhaul. It also has important role in maintenance and repair activities of these fields. it is also used for inspecting piping and pipelines, refinery, pressure vessels, steam pressure vessels and storage tanks.
NDT consists of many methods and techniques, some are simpler ones used to detect surface flaws with great sensitivity and some are versatile volumetric examinations like Ultrasonic testing and Radiography testing which are capable of usefully examining a wide range of thicknesses in any material.
Many of them are safe and can be performed with minimal safety precautions.
Some NDT methods can be used only on metallic objects and some can be use on any material. For example, Liquid penetrant testing can be used to find Surface defects on wrought, cast metals, metal alloys, weld metals, powdered metals, plastics, fibers, ceramics and glass.