The axial crack testing model for long distance oil-gas pipeline based on magnetic flux leakage internal inspection method [PDF]
, 2017 Traditional pipeline magnetic flux leakage (MFL) internal technology mainly uses axial excitation method, which could not recognize the narrow crack defects in the axial direction of the pipe.
Cao, Yang +4 more
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A Simulation and Experimental Study Investigating 2D Magnetic Flux Leakage (MFL) for Defects in Reinforcing Steel [PDF]
, 2023 The study examines magnetic flux leakage signals (Bx, By) within D19 sized rebars in two dimensions. An economically designed test setup incorporating permanent magnets was used to collect magnetic flux leakage at the defect location.
Kee, Seong-Hoon +2 more
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Research on Defect Detection by Finite Element Simulation Combined with Magnetic Imaging
MetalsThis study investigates the magneto-optical imaging (MOI) characteristics of weld defects under alternating magnetic field excitation. A magneto-optical sensor is employed to detect different types of weld defects, and the correlation between MOI ...
Chunmei Xu +8 more
doaj +1 more source
Shock and Vibration, 2019 In this paper, we present a nondestructive testing device for wire rope by unsaturated magnetic excitation as an alternative to existing magnetic flux leakage (MFL) detection devices.
Pengbo Zheng, Juwei Zhang
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MagnetochemistryMagnetic flux leakage (MFL) testing is a widely used non-destructive method for detecting defects in ferromagnetic pipelines. However, demagnetizing fields in ferromagnetic materials can distort MFL signals, reducing detection accuracy.
Jiawen Zhang +5 more
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Quantitative Inspection of Remanence of Broken Wire Rope Based on Compressed Sensing
Sensors, 2016 Most traditional strong magnetic inspection equipment has disadvantages such as big excitation devices, high weight, low detection precision, and inconvenient operation.
Juwei Zhang, Xiaojiang Tan
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Journal of the Korean Society for Nondestructive Testing, 2016 이러한 연속체 구조물의 경우 대부분 외부환경에 노출되어 있어 다양한 환경적, 물리적 요인으로 인해 부식, 크랙, 단선과 같은 국부손상이 발생하게 될 수 있는데 이러한 손상에 대한 초기 대처가 늦을 경우 특정부의 응력 집중, 유체누출 등과 같은 원인으로 구조물 전체의 대형 사고로 이어질 수 있는 위험성을 가지고 있다.따라서 이러한 위험성을 조기에 방지하기 위해 부재에 발생한 손상을 초기에 발견할 수 있는 검사법이 필수적인데, 짧게는 수십 미터에서 길게는 수천 킬로미터까지 이어지는 거대한 연속체 구조물의 특성상, 적용되는 검사법은 신뢰성과 더불어 경제성을 반드시 요구하게 된다.
openaire +2 more sources
Review and comparison of shearography and active thermography for nondestructive evaluation [PDF]
, 2009 postprin
Chen, YS +7 more
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Systematic Approach to Problem Solving of Low Quality Arc Welding during Pipeline Maintenance Using ARIZ (Algorithm of Inventive Problem Solving) [PDF]
, 2014 The pipelines in the oil and gas industry must be regularly checked for possible corrosion that might cause leakage of oil and gas. Magnetic flux leakage (MFL) technique is a magnetic method of nondestructive testing that is used to detect corrosion and ...
Benjaboonyazit, Trizit
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Fém-polimer hibrid csövek élettartam gazdálkodása = Life-time management of metal-polymer hybrid pipes [PDF]
, 2010 A kutató munka célja a fém-polimer hibrid csövek ciklikus, a különböző terhelésekből adódó fárasztó igénybevétellel szembeni ellenállásának meghatározása, továbbá a csövek élettartamának becslése volt.
Czigány, Tibor +6 more
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