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pro vyhledávání: '"R. Lobley"'
A newly installed pipeline leaked during cleaning prior to hydrotest at a pressure of approximately 400 psig. The intended hydrotest pressure was 750 psig. The pipeline was constructed from spiral-welded API 5L-X65 HSLA steel and was intended for sea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d51e1515402072cfd86ac6f1b0f0b63
https://doi.org/10.31399/asm.fach.v03.c9001822
https://doi.org/10.31399/asm.fach.v03.c9001822
Publikováno v:
Journal of Failure Analysis and Prevention. 9:35-38
A spiral welded pipeline failure that occurred during hydrotest was attributed to transit fatigue, caused during highway transportation. Transit fatigue during rail, road and marine transportation is a well-known failure mechanism. American Petroleum
Autor:
Waleed L. Al-Otaibi, Graham R. Lobley
Publikováno v:
Advanced Materials Research. :175-181
Unexpected tube failure is the major factor causing unreliability in utility boilers. The first step in analyzing tube failures is to identify the active damage mechanisms. Three tube damage mechanisms related to overheating are presented and possibl
Autor:
Graham R. Lobley
Publikováno v:
Practical Metallography. 28:249-254
The Cu−Be alloy nut failed as a result of subcritical crack propagation which was initiated from a manufacturing defect in the form of a lap or seam. The subcritical crack growth had occurred by a thermal/mechanical fatigue fracture process in whic
Autor:
Graham R. Lobley
Publikováno v:
Practical Metallography. 28:187-192
Autor:
Graham R. Lobley
Publikováno v:
Practical Metallography. 28:38-41
Tin coated copper lead wires are hand soldered to a particular electronic device using a bismuth tin low melting point solder. An active flux system had been adopted for this soldering operation, which was based on a zinc chloride/ammonium chloride/e
Autor:
Graham R. Lobley
Publikováno v:
Practical Metallography. 27:627-631
The problem of poor soldered joint formation in this case is attributed to excessive thinning of the solder coating formed during the initial HASL process. This had led to exposed copper/tin intermetallic extending around the knee positions of the th
Autor:
Graham R. Lobley
Publikováno v:
Practical Metallography. 27:472-475
Autor:
A, Ensari, M N, Marsh, S, Morgan, R, Lobley, D J, Unsworth, D, Kounali, P T, Crowe, J, Paisley, K J, Moriarty, J, Lowry
Publikováno v:
Clinical science (London, England : 1979). 101(2)
The purpose of this study was to evaluate the use of rectal gluten challenge in the diagnosis of coeliac disease. A total of 103 patients with features suggestive of this diagnosis were prospectively enrolled into the study; a diagnosis of coeliac di
Publikováno v:
Gastroenterology. 108:A816