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Non destructive testing in UAE is a critical tool used by the industry to determine the physical properties of materials without damaging them. This is done through several methods. These methods include ultrasounds, X-rays, and MRIs. Each of these methods is used for specific applications. Ultrasounds, for example, are used to detect cracks and pores in materials.
Profilometry:
A profilometer measures the roughness and profile of the surface of an object. This information is used to compute the critical dimensions of the object. Its historical definition was somewhat analogous to a phonograph, which measured the surface relative to a stylus. However, recent developments have made profilometry a non-contact tool.
Shearography:
Shearography is a laser optical technique that provides information about surface defects. It is a non-contact, full-field NDT method that has a wide range of applications. It is ideal for detecting defects that are not visible at first glance but are more difficult to detect with other methods. Furthermore, it is an excellent choice for applications where the defect is below the surface.
Holographic testing:
Holographic testing is one of the 4 major methods used for nondestructive testing (NDT). It is a noncontact method that uses a holographic laser to detect defects. This method can study objects with an area of several centimeters to a few square meters. The scheme of a holographic test shows the set-up of the measurement instrument. A standard holographic vibrometry set-up shows one side of the sample during testing, while improved holographic systems allow the observer to view the sample from two sides simultaneously.
Another method used for nondestructive testing is ultrasound. These two technologies are very similar, and the ideas used in one have been applied to the other. This has led to technology transfer and commercialization for the NDT field. Today, there are both large corporations and relatively small NDT specialty companies.
Ultrasonic testing:
Ultrasonic testing is a volumetric NDT method that utilizes sound waves to detect defects. The test involves transmitting a sound signal into a structure and receiving the subsequent signals from the structure. The ultrasonic signal reflects off defects, providing a detailed image of the object’s condition. Most ultrasonic testing techniques use compression waves, although some also use shear and structure-guided waves.
