Abstract
The article represents the issue of the possible identification of uneasily accessible assemblies of oil and gas equipment. Sensitivity of the system as a whole to changes occurring in its individual sections was hypothesized and tested. The work was based on the study of the output voltage of the electromagnetic signal with the eddy current control method. A special feature of the experiment was the use of a standard sample for low-cycle fatigue, but with an elongated end, a “tail,” that does not experience deformations. Measurements of the output voltage were carried out with a certain periodicity at four different frequencies of alternating current: 15, 30, 60 and 100 Hz. Analysis of the results showed that the “tail” part of the sample responds to the accumulation of damage in its working area, which made it possible to talk about the possibility of development of a method for remote diagnostics of equipment and structures.
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