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Shell fractures

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001245
EISBN: 978-1-62708-232-7
... Abstract A working roll of 210 mm diam and 500 mm face length was examined because of shell-shaped fractures. The roll consisted of Fe-0.83C-1.6Cr steel. The chromium content was low for a roll of this diam. The crack origin was located about 10 mm under the roil face. Surface hardness (HV1...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0048733
EISBN: 978-1-62708-235-8
.... It was concluded that the brine heater cracked and fractured because it was overstressed in normal operation. The heater design was modified to make the heater shell and the hot well two separate units. A relief valve was recommended in the heater or in the steam line near the heater. Crack propagation...
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Published: 01 June 2019
Fig. 5 The shell fracture associated with the detail fracture in rail 5-1 (2.5×). More
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Published: 01 June 2019
Fig. 6 Shell fracture in rail 5-1 (3.75×). More
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Published: 01 June 2019
Fig. 13 Martensite layer on the shell fracture surface in rail 5. More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c9001659
EISBN: 978-1-62708-231-0
... Abstract A failure analysis case study on railroad rails is presented. The work, performed under the sponsorship of the Department of Transportation, addresses the problem of shell and detail fracture formation in standard rails. Fractographic and metallographic results coupled with hardness...
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Published: 30 August 2021
Fig. 11 Failed brine-heater shell of ASTM A285, grade C carbon steel. The shell fractured at welded joints because of overstress during normal operation. Dimensions in inches More
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Published: 01 June 2019
Fig. 1 Failed brine-heater shell of ASTM A285, grade C, carbon steel. The shell fractured at welded joints because of overstress during normal operation. Dimensions given in inches More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c0046079
EISBN: 978-1-62708-233-4
... Low-carbon steel Brittle fracture After only a short time in service, oil-fired or gas-fired orchard heaters, such as the one shown in Fig. 1 , were easily broken, particularly by impact during handling and storage. Failure occurred in the portion of the heater shell that normally reached...
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Published: 01 June 2019
Fig. 2 Fracture surfaces on the broken off shell. Top: Fatigue fracture surface (site I). Bottom: tensile fracture surface (site II). 1 4 × More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047072
EISBN: 978-1-62708-217-4
... inspection, dye-penetrant inspection, and 10x/150x micrographs of sections etched with Keller's reagent) supports the conclusion that the outer shell of the bullet assembly separated from the stiffener because the four attachment clips fractured through the shell-to-clip spot welds. Fracture occurred...
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Published: 01 June 2019
Fig. 2 Fracture surface of draw-in bolt (top) exhibits “oyster shell” marks, which may be caused by abrupt changes in load level. SEM photomicrograph (bottom, 2000×) of area near the threads on the fracture surface shows hairline cracks along the grain facets. These are often associated More
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Published: 01 June 2019
Fig. 1 Transition from shelling to detail fracture. More
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Published: 01 June 2019
Fig. 12 Metallographic section showing the shell and the detail fracture in rail 5-1. (a) 215×. (b) 425× More
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Published: 01 June 2019
Fig. 1 The defect at which brittle fracture originated in the tank shell in January 1988. There is evidence of burning from a torch. A dime is shown to indicate size More
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Published: 01 June 2019
Fig. 2 Brittle fracture running along the shell wall More
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Published: 01 December 1993
Fig. 6 Photomacrograph of shell midwall laminations and fracture site in Fragment 17 More
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001050
EISBN: 978-1-62708-214-3
... °F,” Class 60. Performance of Other Parts in Same or Similar Service Yankee dryers are typically used for many years (often more than 50), until the shell thickness is reduced below a minimum acceptable value by the periodic regrinding of the working surface. Although shell or head fracture...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c0089716
EISBN: 978-1-62708-231-0
... Abstract A railway tank car developed a fracture in the region of the sill and shell attachment during operation at -34 deg C (-30 deg F). On either side of the sill-support member, cracking initiated at the weld between a 6.4 mm thick frontal cover plate and a 1.6 mm thick side support plate...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001350
EISBN: 978-1-62708-215-0
.... Cracks propagated from the outside as well as the inside surface of the tank shell and met somewhere near the center of the shell thickness. Ratchet marks (“R”) were visible at the edges of the fracture surface. These ratchet marks indicated that the loading was a rotating bending type, and crack...