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magnetic flux concentrators

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Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003509
EISBN: 978-1-62708-180-1
..., undercut, and weld ripples. Geometric imperfections have the effect of locally elevating the stress over and above the nominal stress due to stress concentration from the joint geometry. Methods for calculating the stress concentration factor due to misalignment are readily available ( Ref 4 ). However...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001109
EISBN: 978-1-62708-214-3
...Abstract Abstract Grate bars in the traveling grate indurators in several taconite processing units suffered excessive corrosion following a conversion from acid to fluxed pellet production procedures. The campaign life of the HH grade cast stainless steel bars was reduced from more than 7...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001459
EISBN: 978-1-62708-234-1
... concentration, and surface condition are discussed. Sections are devoted to fatigue crack assessment, corrosion relation to fatigue failure, and the micro-mechanisms of fatigue failure. Materials considered include steels. Photographs of service failures are used to illustrate features alluded to in the text...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001396
EISBN: 978-1-62708-229-7
... local attack has taken place at butt welds in water-wall tubes, particularly those situated in zones of high heat flux. To prevent on-load corrosion an adequate flow of water must occur within the tubes in the susceptible regions of a boiler. Corrosion products and suspended matter from the pre-boiler...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001765
EISBN: 978-1-62708-241-9
... ASTM A283 grade C UNS K02401 ASTM A537 class 2 Introduction Background of the Failure Visual Examination Magnetic Flux Leakage (MFL) Inspection Evaluation of CP System Analysis of Corrosion Products Discussion Conclusions Recommendations References References 1...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001816
EISBN: 978-1-62708-180-1
.... Each type has characteristic features. Ruptures Caused by Overheating When water is boiled in a tube having uniform heat flux (rate of heat transfer) along its length under conditions that produce a state of dynamic equilibrium, various points along the tube will be in contact with subcooled...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003508
EISBN: 978-1-62708-180-1
...: Nonmetallic inclusions; slag, dross, flux G 121 (a) Nonmetallic inclusions whose appearance or analysis shows they arise from melting slags, products of metal treatment or fluxes Slag, dross or flux inclusions, ceroxides G 122 (a) Nonmetallic inclusions generally impregnated with gas...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006764
EISBN: 978-1-62708-295-2
... noise Changes in magnetic flux from stress applied to magnetic material Online monitoring of magnetic material Not suitable for nonmagnetic material Online monitoring; can sense stress without cracking Magnetic metals, steel, nickel, iron, chrome Radiography, computed tomography, digital x-ray...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001834
EISBN: 978-1-62708-241-9
... cations. Exposure to high temperature corrosive flux accelerated the corrosion on the outer wall. Microstructure degradation and the corrosion characteristics observed indicate that the tubes failed primarily because of overheating, which is confirmed by calculations. boiler tubes stress rupture...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003551
EISBN: 978-1-62708-180-1
...Corrosion resistance of refractories based on the maximum temperature criterion Table 1 Corrosion resistance of refractories based on the maximum temperature criterion Type of refractory Temperature limit in indicated atmosphere, °C (°F) Slags and fluxes Hot gases Basic Acid...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001820
EISBN: 978-1-62708-180-1
... ways if the hard spots can be located. Success has been achieved by using internal nondestructive inspection devices based on the magnetic flux-leakage principle to locate hard spots. Once the hard spots are located, they can be removed, shielded to prevent the cathodic current from reaching them...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003553
EISBN: 978-1-62708-180-1
... explains the SCC, which occurs due to welding, metalworking process, and stress concentration, including options for investigation and corrective measures. It describes the sources of stresses in service and the effect of composition and metal structure on the susceptibility of SCC. The article provides...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001818
EISBN: 978-1-62708-180-1
..., ferritic steel that ruptured because it contained a large number of inclusions. (a) Overall view of the return bend showing rupture. (b) Micrograph of an unetched specimen showing high concentration of inclusions. 400×. (c) Micrograph of an unetched specimen showing inclusions and cracks containing scale...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006778
EISBN: 978-1-62708-295-2
...Abstract Abstract This article aims to identify and illustrate the types of overload failures, which are categorized as failures due to insufficient material strength and underdesign, failures due to stress concentration and material defects, and failures due to material alteration...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003543
EISBN: 978-1-62708-180-1
... failure due to stress concentration and material defects Overload failure due to material alteration These categories are neither mutually exclusive nor collectively exhaustive, but are a useful means for pinpointing those areas of the design and materials selection that may require corrective...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003510
EISBN: 978-1-62708-180-1
... of the determining factors for quenchant selection. Table 5 summarizes some average carbon-content concentration limits for quenching steel into water, brine, or caustic ( Ref 24 ). Suggested carbon-content limits for water, brine, and caustic quenching Table 5 Suggested carbon-content limits for water...