Visible to the public Research on stress detection technology of long-distance pipeline applying non-magnetic saturation

TitleResearch on stress detection technology of long-distance pipeline applying non-magnetic saturation
Publication TypeJournal Article
Year of Publication2019
AuthorsLiu, B., He, L., Zhang, H., Sfarra, S., Fernandes, H., Perilli, S., Ren, J.
JournalIET Science, Measurement Technology
Keywordscomposability, compositionality, cyber physical systems, ferromagnetic materials, finite element analysis, finite element method, gas pipeline, Internet of Things, long-distance oil, long-distance pipeline, magnetic domain model, Magnetic domains, Magnetic Remanence, magnetic saturation, nonmagnetic saturation environment, nonmagnetic saturation state, Pipelines, pubcrawl, remanence, remanence signal, Resiliency, stress analysis, stress concentration region, stress detection method, stress detection technology, surface remanence signals

In order to study the stress detection method on long-distance oil and gas pipeline, the distribution characteristics of the surface remanence signals in the stress concentration regions must be known. They were studied by using the magnetic domain model in the non-magnetic saturation state. The finite element method was used herein with the aim to analyse the static and mechanical characteristics of a ferromagnetic specimen. The variation law of remanence signal in stress concentration regions was simulated. The results show that a residue signal in the stress concentration region exists. In addition, a one-to-one correspondence in the non-magnetic saturation environment is evident. In the case of magnetic saturation, the remanence signal of the stress concentration region is covered and the signal cannot be recognised.

Citation Keyliu_research_2019