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Subject: remote field eddy current O&G, oilfield. Уважаемые коллеги! Подскажите, пож-та, что означает фраза -remote field eddy current -вихревые токи отдалённого поля?In this study, theoretical formulations of the magnetic vector potential and magnetic flux density including axial and radial wave numbers based on Maxwell equations are presented analytically to find out the changes of amplitude and phase in the magnetic flux density and the consequent induced voltage which can be a criterion in the remote field eddy current principle for detecting the metal defects in gas pipelines. Спасибо |
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