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Phased array is widely used in several industrial sectors. This method is an advanced NDT method that is used to detect component failures (i.e. cracks or flaws) and thereby determine component quality. Due to the possibility to control parameters such as beam angle and focal distance, this method is very efficient regarding the defect detection and speed of testing. Apart from detecting flaws in components, phased array can also be used for wall thickness measurements in conjunction with corrosion testing. PA is becoming increasingly popular as a safe alternative to Radiography. Phased array is able to give you a detailed image of a weld or a structure so you can see any subsurface defect.
Is a highly sensitive and accurate ultrasonic testing method that requires two probes. A "transmitter" and a "receiver". TOFD uses time as a measurement, with basic trigonometry rather than amplitude which will vary depending on the orientation of the defect. This method is more reliable and more accurate than other NDT methods. TOFD is also used for the finding of subsurface defects.
One of the most commonly used and basic examination methods in the industry today. UT is commonly used for thickness measurements, as well as corrosion surveys, but can still be used to find other defects within the material. It utilizes very short soundwaves or pulses from a probe. High frequency sound waves are very directional, and they will travel through a medium (like a piece of steel or plastic) until they encounter a boundary with another medium (like air), at which point they reflect back to their source. By analyzing these reflections it is possible to measure the thickness of a test piece, or find evidence of cracks or other hidden internal flaws.
Also known as Penetrant Testing (PT), LPI can be used on virtually all non-porous materials to detect surface-breaking defects. The penetrant contains a dye, either fluorescent or non-fluorescent, that is applied to the part over a period of time. Excess penetrant is removed after the specified time is up and a developer is applied that, soaks up the remaining dye showing you the shape and length of the surface defect.
The magnetic particle examination method may be applied to detect cracks and other discontinuities on the surface and subsurface of ferromagnetic materials. Typical types of discontinuities that can be detected by this method are cracks, laps, seams, cold shuts and laminations.
This method involves magnetizing the area to be examined and applying fine ferromagnetic particles (the examination medium) to the surface. The particles will form patterns on the surface where cracks and other discontinuities cause distortions in the normal magnetic field. These patterns are usually characteristic of the type of discontinuity that is detected