Results 31 to 40 of about 1,874 (204)
Composite excitation multi-extension direction defect magnetic flux leakage detection technology
Journal of Measurement Science and Instrumentation, 2022 In the traditional pipeline magnetic flux leakage (MFL) detection technology, circumferential or axial excitation is mainly used to excite the magnetic field of defects.
WEI Minghui +5 more
doaj
Magnetic Flux Leakage Course of Inner Defects and Its Detectable Depth
Chinese Journal of Mechanical Engineering, 2021 As a promising non-destructive testing (NDT) method, magnetic flux leakage (MFL) testing has been widely used for steel structure inspection. However, MFL testing still faces a great challenge to detect inner defects.
Jianbo Wu +3 more
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Adaptive Filtering Method of MFL Signal on Rail Top Surface Defect Detection
IEEE Access, 2021 Magnetic flux leakage (MFL) detection technology provides an effective method to conduct high-speed detection of the damage suffered by rail surface.
Kailun Ji +4 more
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Development and optimisation of low-power magnetic flux leakage inspection parameters for mild steel welds [PDF]
, 2021 Magnetic particle and other magnetic flux leakage (MFL)-based methods for the detection and evaluation of surface-breaking flaws in ferromagnetic materials typically use high-strength (≥0.5 T RMS), low-frequency (≤50 Hz) magnetic fields.
Liang, C. W. +3 more
core +1 more source
Variable angle photoelectron spectrometer [PDF]
, 1977 The design, construction, and performance of a spectrometer for measuring the angular and energy distributions of electrons photoejected by rare gas resonance light is described. Results using 584.4‐Å photons from a helium lamp are reported.
Kuppermann, Aron +2 more
core +1 more source
Frontiers in Physics, 2023 Tapered roller bearings are widely used in heavy machinery, railway transportation, aviation, and other fields. Their quality and reliability are related to the operational safety of mechanical equipment.
Yun Yang +4 more
doaj +1 more source
Frequency Response of a Moving Two-Dimensional Defect in Magnetic Flux Leakage Inspection [PDF]
, 2019 This is the author accepted manuscript. The final version is available from IEEE via the DOI in this record The detection of magnetic flux leakage (MFL) enables nondestructive detection and characterization of defects in magnetic structures.
Abdulla, R, Al-Dujaili, M, Aziz, MM
core +1 more source
Sustainability, 2022 Girth weld defects in long-distance oil and gas pipelines are one of the main causes of pipeline leakage failure and serious accidents. Magnetic flux leakage (MFL) is one of the most widely used inline inspection methods for long-distance pipelines. However, it is impossible to determine the type of girth weld defect via traditional manual analysis due
Liyuan Geng +3 more
openaire +1 more source
Measurement Science Review, 2016 In this paper, an analytical model is proposed to predict magnetic flux leakage (MFL) signals from the surface defects in ferromagnetic tubes. The analytical expression consists of elliptic integrals of first kind based on the magnetic dipole model.
Suresh V., Abudhahir A.
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Distinction method of pipeline inner and outer defects based on the dynamic magnetic multipole field
You-qi chuyun, 2021 In order to identify the inner and outer defect signals in pipeline magnetic flux leakage (MFL) internal inspection under dynamic conditions, a mathematical model of dynamic leakage magnetic field based on the magnetic multipole field was established for
Jing HU +4 more
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