Results 21 to 30 of about 495 (164)
Investigating the Influence of Design Frequency on the Ultrasonic Signal of PFSV‐EMATs
Journal of Sensors, Volume 2022, Issue 1, 2022., 2022 The point‐focusing shear vertical wave electromagnetic acoustic transducer (PFSV‐EMAT) with a concentric meander line (CML) coil has been developed to detect and size micro defection concealed within a certain depth of materials. It is proved to be sensitive to the design frequency, which is associated with the spacing of CML coil.
Xiaojuan Jia +4 more
wiley +1 more source
The Research of 30 mm Detecting Distance of Testing Device for Wire Rope Based on Open Magnetizer
Applied Sciences, 2022 Wire rope will have defects such as local faults (LF) and loss of metal area (LMA) during the long-term using process. The nondestructive testing method of magnetic flux leakage (MFL) has been widely used in wire rope defect detection.
Mengqi Liu +6 more
doaj +1 more source
Magnetic induction strength on surface of a ferro-medium circular cylinder
Theoretical and Applied Mechanics Letters, 2016 Based on the Ampere molecular current hypothesis and the Biot–Savart law, a magnetic model on the metal magnetic memory (MMM) testing of a specimen is proposed.
M. Jin
doaj +1 more source
Nondestructive Testing for Corrosion Evaluation of Metal under Coating
Journal of Sensors, Volume 2021, Issue 1, 2021., 2021 The use of steel has grown rapidly over the past decades. However, corrosion under coating detection still presents challenges for nondestructive testing (NDT) techniques. One of such challenges is the lift‐off introduced by complex structures. Inaccessibility due to structure leads corrosion to be undetected, which can lead to catastrophic failure ...
Ruikun Wu +5 more
wiley +1 more source
Wire Rope Defect Recognition Method Based on MFL Signal Analysis and 1D-CNNs
Sensors, 2023 The quantitative defect detection of wire rope is crucial to guarantee safety in various application scenes, and sophisticated inspection conditions usually lead to the accurate testing of difficulties and challenges.
Shiwei Liu, Muchao Chen
doaj +1 more source
Advances in magnetic flux leakage testing technology
Journal of Measurement Science and Instrumentation, 2021 Magnetic flux leakage（MFL） testing technology has the advantages of simple principle, easy engineering implementation and low requirements on the surface of the detected workpiece.
ZHANG Peng +3 more
doaj
IEEE Access, 2020 In the field of nondestructive testing (NDT) of wire rope, magnetic flux leakage (MFL) detection is the most widely used method. The traditional single-dimensional MFL detection system has the disadvantages of large volume, heavy weight, low sensitivity ...
Juwei Zhang, Fuchang Peng, Jinbao Chen
doaj +1 more source
Petroleum Research, 2023 Regular inspection of long-distance oil and gas pipelines plays an important role in ensuring the safe transportation of oil and gas, and inspection on welding defects is an important part of the inspection process.
Changsheng Zhang +7 more
doaj +1 more source
Research on 3D MFL testing of wire rope based on empirical wavelet transform and SRCNN [PDF]
, 2022 Magnetic flux leakage (MFL) testing is one of the most effective methods in nondestructive testing of wire rope. However, traditional MFL testing devices have problems such as low recognition rate, single detection dimension and fuzzy magnetic leakage ...
Chen, Qihang, Zhang, Juwei, Li, Bing
core +1 more source
Development of a MFL system with optical positioning for ferromagnetic plate inspection
e-Journal of Nondestructive TestingThis paper presents the development of a Magnetic Flux Leakage (MFL) based system for non-destructive testing of ferromagnetic plates. Our approach integrates a magnetic circuit using neodymium-iron-boron magnets, a Hall effect sensor for flux ...
A. Ahemadi, Abdelhalim Taieb brahimi
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