Abstract
Two varieties of contactless electromagnetic-acoustic portable thickness meters with autonomous power supply, created on the basis of up-to-date digital technologies, are described. The instruments implement a new highly efficient design of magnetic field concentrator developed on the basis of new magnetic materials. The КРМ-Ц-Дельта thickness meter is equipped with a powerful microprocessor-based data processing system, which expands the capabilities of the instrument. The ЭМАТ-100 thickness meter is a small-size and small-weight instrument. The main advantage of both instruments is that they can be operated on corroded untreated surfaces without the use of a contact fluid. Both instruments are suitable for testing through coatings of considerable thickness (up to 2 mm) and can be operated under workshop and field conditions.
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Bezlyud'ko, G.Y., Dolbnya, E.V., Leshchenko, N.G. et al. Portable Electromagnetic-Acoustic Thickness Meters (EMAT). Russian Journal of Nondestructive Testing 40, 239–245 (2004). https://doi.org/10.1023/B:RUNT.0000043672.63881.ca
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DOI: https://doi.org/10.1023/B:RUNT.0000043672.63881.ca