The Study of Electromagnetic Stress Testing Method on Oil-Gas Pipelines Based on WT - Geomaterials

GM > Vol.4 No.2, April 2014

Geomaterials

Volume 4, Issue 2 (April 2014)

ISSN Print: 2161-7538 ISSN Online: 2161-7546

Google-based Impact Factor: 0.58 Citations

The Study of Electromagnetic Stress Testing Method on Oil-Gas Pipelines Based on WT ()

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Download as PDF (Size: 724KB) PP. 55-63

DOI: 10.4236/gm.2014.42006 5,144 Downloads 6,848 Views Citations

Author(s)

Bin Liu, Wanru Sun, Yiren Lin

Affiliation(s)

School of Information Science and Engineering, Shenyang University of Technology, Shenyang, China.

ABSTRACT

This paper proposes an effective method for early diagnosis (stress concentrating) of the oil-gas pipeline. Based on the principle of electromagnetic induction Faraday, we have designed and realized the nondestructive testing system for stress concentration area of ferromagnetic materials by means of the research of metal materials inverse magnetostrictive effect mechanism. The system changes the influence degree of the stress in ferromagnetic materials’ magnetic conductance to the corresponding voltage array by using discrete wavelet analysis method to process the data, in which not only the measuring accuracy is improved, but also the stress concentration is more directly reflected. The experiments confirm that the electromagnetic stress testing method is feasible and valid.

KEYWORDS

Oil-Gas Pipeline, Electromagnetic Induction, Magnetic Conductance, Stress Concentration, Nondestructive Testing

Share and Cite:

Liu, B. , Sun, W. and Lin, Y. (2014) The Study of Electromagnetic Stress Testing Method on Oil-Gas Pipelines Based on WT. Geomaterials, 4, 55-63. doi: 10.4236/gm.2014.42006.

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