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What is NDT? WHAT? Non-destructive testing (NDT), also called non-destructive examination (NDE) and non-destructive inspection (NDI), is testing that does not destroy the test object. NDE is vital for constructing and maintaining all types of components and structures. To detect different defects such as cracking and corrosion, there are different methods of testing available, such as X-ray (where cracks show up on the film) and ultrasound (where cracks show up as an echo blip on the screen). This article is aimed mainly at industrial NDT, but many of the methods described here can be used to test the human body. In fact methods from the medical field have often been adapted for industrial use, as was the case with Phased array ultrasonic and Computed radiography. While destructive testing usually provides a more reliable assessment of the state of the test object, destruction of the test object usually makes this type of test more costly to the test object's owner than non-destructive testing. Destructive testing is also inappropriate in many circumstances, such as forensic investigation. That there is a trade-off between the cost of the test and its reliability favors a strategy in which most test objects are inspected non-destructively; destructive testing is performed on a sampling of test objects that is drawn randomly for the purpose of characterizing the testing reliability of the non-destructive test. Our Freelance Services Conventional Ultrasonic Testing Magnetic Particle Testing Dye Penetrant Testing Visual Testing on Weldment Welding Supervision Manpower Supply for QA/QC Pre-Shipment Inspection Post Shipment Inspection During/In-Line Production Inspection
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