Abstract
Corrosion testing of buried metal pipelines is an important measure to ensure the safe operation of pipelines. In order to investigate the transient electromagnetic field named response of buried metal pipelines, a three-dimensional simulation model was established by using multiphysics simulation software named ANSYS Multiphysics to calculate and analyze buried metal pipelines with different corrosion degrees, ie different wall thicknesses, on the receiving coil after the excitation signal is turned off[1]. The induced electromotive force changes, the results show that the larger the wall thickness, that is, the smaller the corrosion degree, the slower the attenuation of the induced electromotive force curve of the receiving coil, the smaller the wall thickness, the faster the attenuation; and the verification was experimented: the transient electromagnetic method can effectively detect the degree of corrosion of metal pipes buried under the ground.
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