Study on internal stress damage detection in long-distance oil and gas pipelines via weak magnetic method; ISA Transactions; Vol. 89

Study on internal stress damage detection in long-distance oil and gas pipelines via weak magnetic method; ISA Transactions; Vol. 89

Detalles Bibliográficos
Parent link:ISA Transactions
Vol. 89.— 2019.— [P. 272-280]
Autor Corporativo: Национальный исследовательский Томский политехнический университет Инженерная школа неразрушающего контроля и безопасности Центр промышленной томографии Научно-производственная лаборатория "Тепловой контроль"
Otros Autores: Liu Bing, He Luyao, Ma Zeyu, Zhang Hai, Sfarra S. Stefano, Fernandes H. C. Henrique Coelho, Perilli S.
Sumario:Title screen
Weak magnetic stress detection is an important issue in oil–gas pipeline internal detection area. In order to verify the characteristics of weak magnetic stress internal detection signals, we built herein a magneto-mechanics equivalent model having a balanced magnetic field. First, we calculated the relationship between the stress and the weak magnetic signals; consequently, the analysis propagation laws of the weak magnetic signals with non-magnetic saturation were pointed out. Finally, the theoretical model was validated by a systematic experimental research. The analytical results show that a one-to-one linear link between the weak magnetic signals and the stress concentration is clear. Instead, the change of the weak magnetic signals with the liftoff is nonlinear, therefore we are proposing the Boltzmann liftoff correction factor whose degree of adaptability of the equivalent model can reach the value of 94%. It is possible to note that when the liftoff is in the approximate linear stage, the relevance ratio and the recognition rate of the magneto-mechanics curve show a high-quality. This conclusion is important in the engineering field for the set of the liftoff.
Режим доступа: по договору с организацией-держателем ресурса
Lenguaje:inglés
Publicado: 2019
Materias:
электронный ресурс
труды учёных ТПУ
liftoff
magneto-mechanics equivalent model
stress concentration
pipe
linear
взлет
эквивалентные модели
Acceso en línea:https://doi.org/10.1016/j.isatra.2018.12.009
Formato: Electrónico Capítulo de libro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=660214

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