Zobrazeno 1 - 10
of 26
pro vyhledávání: '"D. L. Atherton"'
Publikováno v:
Insight - Non-Destructive Testing and Condition Monitoring. 45:323-327
Magnetic barkhausen noise measurements on magnetized pipeline steel. Magnetic Barkhausen Noise (MBN) is created by the irreversible motion of 180-degree domain walls. It is sensitive to residual and applied stress in ferromagnetic materials such as p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::53647cf430209778ee20cc3f7c413866
https://doi.org/10.1784/insi.45.5.323.52873
https://doi.org/10.1784/insi.45.5.323.52873
Autor:
K Mandal, D L Atherton
Publikováno v:
Journal of Physics D: Applied Physics. 31:3211-3217
Magnetic flux-leakage (MFL) measurement is the most widely used non-destructive technique for in-service inspection of oil and gas pipelines. The effect of line-pressure-induced hoop stress on MFL signals has been studied for an electrochemically mil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::084f726f6a9783ccd4ea82fd07d11a31
https://doi.org/10.1088/0022-3727/31/22/006
https://doi.org/10.1088/0022-3727/31/22/006
Autor:
Y. Zhang, D. L. Atherton
Publikováno v:
Research in Nondestructive Evaluation. 10:163-169
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::32bbf8a2312e935422035835e12d8155
https://doi.org/10.1080/09349849808968140
https://doi.org/10.1080/09349849808968140
Publikováno v:
Research in Nondestructive Evaluation. 8:83-100
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f79219b8ba265445db74c04b790057a
https://doi.org/10.1080/09349849608968108
https://doi.org/10.1080/09349849608968108
Autor:
S. Smith, D. L. Atherton
Publikováno v:
Research in Nondestructive Evaluation. 7:203-214
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::845fbc8559a77f194a61585ba7fa2096
https://doi.org/10.1080/09349849508968231
https://doi.org/10.1080/09349849508968231
Autor:
D. L. Atherton, W. Czura
Publikováno v:
Research in Nondestructive Evaluation. 5:123-134
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af4345289e320c96027989a894c330a3
https://doi.org/10.1080/09349849309409547
https://doi.org/10.1080/09349849309409547
Publikováno v:
Journal of Applied Physics. 83:7106-7108
Tensor magnetostriction and magnetization hysteresis loops for a 25 mm ferrite magnet cube were measured. These describe the magnetization properties and reflect the anisotropy of the system. The sample investigated allowed the magnetization to be in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a3055911569c56a642c7584b169e009
https://doi.org/10.1063/1.367533
https://doi.org/10.1063/1.367533
Publikováno v:
Volume 2: Integrity and Corrosion; Offshore Issues; Pipeline Automation and Measurement; Rotating Equipment.
Of these various factors that influence the Magnetic Flux Leakage (MFL) signal, stress is the most complex and the least understood. Pipe wall operating stresses may exceed 70% of the yield strength, but much higher local stress levels are present ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::19c1dbd0dfc1dc2a54314f2f42f88f66
https://doi.org/10.1115/ipc2000-200
https://doi.org/10.1115/ipc2000-200
Publikováno v:
AIP Conference Proceedings.
An understanding of pipeline steel characteristics under conditions of high stress and background magnetization is critical for interpretation of the Magnetic Flux Leakage signals obtained under similar conditions. The Barkhausen effect is due to abr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1ae1a3c1e20dd7965cbec026e061962
https://doi.org/10.1063/1.1306218
https://doi.org/10.1063/1.1306218
Autor:
D. L. Atherton, L. Clapham
Publikováno v:
AIP Conference Proceedings.
The operating pressure in oil and gas pipelines can produce hoop stress as high as 70% of yield stress. Superimposed on this are bending stresses and residual stresses from pipe forming operations. Furthermore defects cause local changes in both the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0bbe73b7c729e3e64d57a64f30d04418
https://doi.org/10.1063/1.1306222
https://doi.org/10.1063/1.1306222