The Study of Electromagnetic Stress Testing Method on Oil-Gas Pipelines Based on WT
The Study of Electromagnetic Stress Testing Method on Oil-Gas Pipelines Based on WT作者机构：School of Information Science and Engineering Shenyang University of Technology Shenyang China
出 版 物：《Geomaterials》 (地质材料（英文）)
年 卷 期：2014年第4卷第2期
页 面：55-63页
学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学]
主 题：Oil-Gas Pipeline Electromagnetic Induction Magnetic Conductance Stress Concentration Nondestructive Testing
摘 要：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.
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