THANK YOU FOR SUBSCRIBING
Manufacturing Technology Insights | Tuesday, July 21, 2020
Non Destructive Testing (NDT) is instrumental in assuring that structural and mechanical components perform their function in a safe, reliable, and cost-effective manner.
FREMONT, CA: NDT technicians do the necessary tests to locate the indicators and discontinuities that may cause failures or shut downs in such systems. These tests are carried out in a manner that does not affect the future usefulness of the object or material; therefore, the name non-destructive. NDT enables careful and thorough materials evaluation without the requirement for deconstruction or damage. NDT is typically used at different points in a parts life cycle. NDT can be utilized before the use of a component for the sake of quality control. NDT is also employed, while components are used to detect service-related conditions caused by wear, fatigue, corrosion, stress, or other factors that affect reliability.
Stay ahead of the industry with exclusive feature stories on the top companies, expert insights and the latest news delivered straight to your inbox. Subscribe today.
[vendor_logo_first]NDT Technologies includes:
Visual and Optical Testing (VT)
Visual Examination might be an effective way to recognize the surface imperfections that could affect a part or component. Visual Examiners utilize how an element is manufactured, the function of the human eye, lighting requirements, and precise measuring tools to evaluate materials. Computer-controlled camera systems and optical aids like borescopes may also be used to recognize and measure features of a component.
Ultrasonic Testing (UT)
Ultrasonic Examination uses high-frequency sound waves transmitted into a material to identify discontinuities or locate changes in the material characteristics. Sound is launched into the object being examined, and reflections from internal imperfections, acoustic impedance areas, or varying geometrical surfaces are returned to a receiver.
Radiography (RT)
Radiographic Examination includes utilizing radioactive isotopes (gamma rays) or X-rays on materials to peer qualitatively for indications the same way a doctor looks for fractures or other conditions. Radiation is directed via a part and projected onto film or a digital detection device, leaving an image that can be examined by the qualified Radiographer.
Penetrant Testing (PT)
Penetrant Examination is carried out with a dye solution. Once applied to the surface, the dye will effectively penetrate any surface-breaking cavity. Excess solution is removed from the object. A developer is then applied to draw out any penetrant that remains unseen. With fluorescent dyes, ultraviolet light is used to brightly make the “bleed-out” fluoresce, allowing imperfections to be readily seen. With visible stains, color contrast between the penetrant and developer makes the “bleed-out” easy to understand.
More in News