Author: Ameet Vijay JoshiPublisher:
ISBN:
Category : Gas leakage
Languages : en
Pages : 208
Book Description
Inverse Problems in Non-destructive Evaluation of Gas Transmission Pipelines Using Magnetic Flux Leakage
Author: Ameet Vijay JoshiPublisher:
ISBN:
Category : Gas leakage
Languages : en
Pages : 208
Book Description
Advances in Non-destructive Evaluation
Author: C. K. MukhopadhyayPublisher: Springer Nature
ISBN: 9811601860
Category : Technology & Engineering
Languages : en
Pages : 394
Book Description
This book comprises the proceedings of the Conference and Exhibition on Non Destructive Evaluation, (NDE 2019). The contents of the book encompass a vast spectrum from Conventional to Advanced NDE including novel methods, instrumentation, sensors, procedures and data analytics as applied to all industry segments for quality control, periodic maintenance, life estimation, structural integrity and related areas. This book will be a useful reference for students, researchers and practitioners.
Non-destructive evaluation of gas carrying pipelines using magnetic flux leakage technique
Author: Pavle ŽerovnikMagnetic Flux Leakage
Author: Songling HuangPublisher: Walter de Gruyter GmbH & Co KG
ISBN: 3110480158
Category : Science
Languages : en
Pages : 242
Book Description
This book systematically introduces magnetic flux leakage testing principles and their applications in practice. Signal detection, collection, processing, the inversion of magnetic flux leakage defect and 3D imaging are discussed in detail with extensive project experiences, making the book an essential reference for researchers, developers and engineers in nondestructive testing.
Understanding Magnetic Flux Leakage from Gouges and Dents Containing Gouges
Author: Jia Dian ChenPublisher:
ISBN:
Category :
Languages : en
Pages : 354
Book Description
Magnetic flux leakage (MFL) is the most widely used non-destructive evaluation (NDE) technique for operating gas and oil transmission pipelines. The Queen's Applied Magnetics Group (AMG) has been studying MFL signals from dents for the past 5 years, and recently began considering MFL signals from gouges, and gouge/dent combinations. It is believed that MFL signals from gouges may arise from three factors: the gouge geometry, residual stresses, and a severe plastically deformed layer that is often present at the base of the gouge. The last factor has been studied by another MSc student, Kris Marble. The present thesis work primarily considers the effects of the first two factors - gouge geometry in combination with residual stress. Samples containing realistic gouges, produced under field-like conditions, were obtained from two sources - Stress Engineering Services (SES) in Houston, Texas and GdF Suez in St. Denis, France. At SES, ten different gouges on five pipes (two on each pipe) with increasing severity were produced for the current thesis project. Three gouged pipe samples were obtained from GdF Suez. The bulk of the thesis study involved experimental MFL measurements made for each of the gouges and gouge/dents of SES samples in the study, on both the outer and inner surface, and in some cases when the pipe wall was under pressure. The experimentally obtained MFL signals were interpreted by comparison with the expected MFL geometry-only signals (obtained using magnetic modeling) along with the knowledge of the residual stress information obtained from the neutron diffraction measurements. Various results were obtained and concluded. The neutron diffraction was also done on three GdF Suez samples. The results from one sample were used to model the residual stress distribution around the sample and the modeled MFL signals were compared with the experimental MFL signals. The modeled signals are able to account for most features in the experimental results.
Invesigation of the Magnetic Flux Leakage Signatures of Dents and Gouges
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
A study of gouges and dents in the context of pipelines has been completed, using the non-destructive evaluation (NDE) techniques of magnetic flux leakage (MFL) and magnetic Barkhausen noise (MBN). The research is part of an ongoing effort by the Applied Magnetics Group (AMG) at Queen's University to improve the interpretation of the MFL signal, which is used extensively by industry for defect detection and evaluation. The gouges were found to have distinctive MFL signatures depending on their orientation relative to the magnetization axis. Features in the MFL signal were identified as superpositions of geometry-related effects and strain or work hardening of the surface material. A qualitative magnetic permeability distribution in the material near a gouge has been proposed. The distribution is expected to vary in magnitude and extent according to the defect severity. The MFL results of the dent studies, on samples made available by Gaz de France (GdF), largely agreed qualitatively with previous research of dents. However, the differences pointed to the need for study of more varied dent shapes; new signal features were observed that suggested tensile residual strain in the dent rim is more prominent than earlier studies and modeling have predicted. Additionally, upgrades made to the MFL scanning system used by the AMG and a novel approach for building computer models are detailed.
Dissertation Abstracts International
Author: Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 924
Book Description
NDE Applications of Magnetic Leakage Field Methods
Author: R. E. BeissnerImaging and Inverse Problems of Electromagnetic Nondestructive Evaluation
Author: Steven Gerard RossMagnetic Flux Leakage Inspection of Gas Pipelines
Author: R. W. ScrivnerPublisher:
ISBN:
Category : Leak detectors
Languages : en
Pages : 25
Book Description