ultrasonic inspection


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ultrasonic inspection

ultrasonic inspection
Cathode ray tube indicator corrosion.
ultrasonic inspectionclick for a larger image
Some ultrosonic non-destructive testing methods.
A nondestructive test method that employs high-frequency mechanical vibration energy to detect and locate structural discontinuities or differences and to measure the thickness of a variety of materials. Radiation frequency is of the order of 0.1 to 25 MHz. The beam travels unimpeded through large parts, may be angled for testing sheet stocks, and can impact materials immersed in liquids. Access is required to only one side of the material being tested. This NDT (nondestructive testing) method can detect microstructural alterations, such as microcracks, foreign particles, precipitates, grain boundaries, interphase boundaries, and dislocation defects. For corrosion detection, pulse-echo and resonance methods are used. The frequency of the vibration in this case is usually from about 0.5 to 25 MHz. The vibrations travel through the material and bounce back. There are three pips on the CRT (cathode-ray tube). One represents the front and the other the back of the material. If there is intergranular corrosion, then it will appear as the third pip, as shown in the illustration.
References in periodicals archive ?
Product Sub-Category : Ultrasonic inspection of reformer tubes at nfl, pa
TEHRAN (FNA)- The latest ultrasonic inspections detected a substantial number of new micro cracks in nuclear reactors at the Tihange and Doel power plants in Belgium since the last study conducted three years ago, Belgian and German media report.
Ultrasonic inspection technologies require only a single technician with minimal equipment, and results are displayed in microseconds, readily available for interpretation.
6R4 is the latest in Zetec's suite of ultrasonic Inspection Management software.
Technology has progressed in leaps and bounds over the past few years, but both visual and ultrasonic inspection systems have drawbacks that limits their use to non-critical joins, says Malcolm Spicer, NDT consultant Level 3 at The Welding Institute (TWT).
The procedure, entitled "Part 4 a Ultrasonic Inspection of BMS 8-276 Solid Laminate Fuselage Structures for Damage (Ultrasonic Camera)," helps NDT inspectors capture real-time, high-resolution ultrasound images of composite structures.
Pretect's rope access division employs only trained rope access technicians who are qualified as required by Industrial Rope Access Trade Association (Irata) standards coupled with abilities to deliver a wide range of inspection techniques including but not limited to Non Destructive Testing , Ultrasonic Inspection, Lifting Gear Inspection, Eddy Current inspection, Visual/Photographic/Video inspection, Magnetic Particle and Dye Penetrant Inspection, ACFM, TOFD, Phased Array and Corrosion Mapping.
I came to do my first NDT qualification at ARL and shortly after that I came to work at the firm as an NDT trainer in ultrasonic inspection.
Among the topics are visual inspection, chemical composition, ultrasonic inspection, inspecting steel bar and wire, inspecting powder-metallurgy parts, and inspecting weldments and brazed assemblies.
Supply of an ultrasonic inspection device (for leak detection, also for mechanical and electrical inspection).
LTI has also been Nadcap accredited in Nondestructive Testing for liquid penetrant, magnetic particle, and ultrasonic inspection methods since 1992, with the current certificate valid through July 31, 2012.
Acumax offers non destructive testing (NDT), rope access and ultrasonic inspection services to the industrial, oil & gas and the offshore sectors in South Africa and the coast of Africa, the buyer said in a press release.