Non-destructive testing (NDT) is a testing and analysis technique used by industry to evaluate the properties of a material, component, structure, or system for characteristic differences or welding defects and discontinuities without causing damage to the original part. NDT is also known as non-destructive examination (NDE), non-destructive inspection (NDI), and Non-destructive evaluation (NDE).As we know, non-destructive testing can generally be split into two areas: surface techniques and sub-surface techniques. These techniques are then categorized into various testing methods such as visual testing, liquid penetrant testing, acoustic emission testing, leak testing, radiography, ultrasonic testing, magnetic particle testing, eddy-current testing, vibration analysis, thermal/infrared testing, and laser testing.Let’s have a look at the points which differentiate them from each other. Visual TestingVTOldest forms of testingCan check for damage including cracks, corrosion, and misalignmentLiquid Penetrant TestingPTFlexible technique used in the aviation industryCan detect surface defects and structural damage in non-porous materialsAcoustic Emission TestingAEAn abrupt force is usedLeaks and active corrosion can be detectedLeak TestingLTInvolves pressurizing & immersing the test object in a liquiddetects gas (usually air) leaking from the test piece in the form of bubbles.Radiographic TestingRTcan use both x-rays for thin materials and gamma rays for thicker materialsTo show discontinuities in the testing objectUltrasonic TestingUTuses high-frequency sound waves to locate defectsconduct examinations and measurements on a test areaMagnetic Particle TestingMTinvolves inducing a magnetic field in the test objectfind discontinuities at or near the surface of ferromagnetic materialsEddy-current TestingECTinduces an electromagnetic field in a conductive test objectmeasures the secondary magnetic field generated around the electric current Vibration Analysis VAused to monitor the vibration signatures generated by a rotating piece of machinery -Thermal/Infrared TestingIRTmapping the surface temperatures of an objectused to detect damage such as corrosion, delamination, voids, and disbondsLaser Testing MethodsLMTUseful in detecting tiny flawsuse laser light in different ways to detect deformation on the surface of objects and computer processing to compare stressed and unstressed conditionsConclusion:Are you looking for a single platform that has all the information related to Non- destructive Testing? Your search ends here. One Stop NDT has everything related to Non-Destructive Testing in one place.Backed by professionals with unprecedented experience & the presence of more than 20 years in the NDT Market, One Stop NDT gives you a chance to freely communicate and interact with experts.