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axial cracks

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Published: 01 December 2019
Fig. 3 Axial cracks on the external surface of cylinder portion More
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Published: 01 June 2019
Fig. 4 Axial cracks on recirculation pump shaft revealed by dye-penetrant examination. More
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Published: 01 December 2019
Fig. 12 Stitched micrograph of pinion shaft at section showing an axial crack More
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Published: 30 August 2021
Fig. 7 (a) Photograph of turbine vane. (b) Photograph showing axial cracking at midheight of leading edge. (c) Composite optical micrograph showing leading-edge crack in cross section. Etched with Marble’s reagent. Original magnification: 100×. (d) Scanning electron micrographs showing gamma More
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Published: 01 June 2019
Fig. 3 Axial cracking at radial oil hole. More
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Published: 01 June 2019
Fig. 4 Axial cracking at radial oil hole. More
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Published: 01 June 2019
Fig. 5 Opposing faces of axial crack. More
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Published: 01 June 2019
Fig. 5 Laboratory brittle torsion failure shows longitudinal, or axial, crack growth. Magnification 55 times. More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001417
EISBN: 978-1-62708-227-3
... of fatigue failure were present with origins at about the mid-thickness of the pin located each side of the step in the fracture surface. In addition, cracking was evident in the axial direction. The crack ran into one of the radial oil holes near the end of the pin. A further section was taken transverse...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001421
EISBN: 978-1-62708-235-8
.... The cracks were located in the part of the flange that formed a continuation of the pipe bore. The majority of them originated at the end of the flange bore and extended axially along the pipe and radially across the flange face. Magnetic crack detection revealed a further number of cracks in the weld...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001847
EISBN: 978-1-62708-241-9
... sleeve fatigue fracture insufficient nitriding tangential stress chromium steel axial cracks beach marks microstructural analysis nitriding depth 38CrMoAl (chromium-molybdenum-aluminum alloy steel) Background A bearing sleeve assembled with the locomotive turbocharger-main shaft...
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Published: 01 June 2019
Fig. 4 Photomicrographs at an axial weld toe showing a fatigue-initiated crack that extended through the pipe wall More
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Published: 01 June 2019
Fig. 1 General view of bellows showing axial and circumferential cracking. More
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001755
EISBN: 978-1-62708-241-9
... of fatigue crack(s) in the inner race. When the crack reached the critical size, the collar of the race fractured, causing subsequent damage. The cage also failed due to excessive stresses in the axial direction, and its material was smeared on the steel balls and the outer race. aircraft bearings...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001515
EISBN: 978-1-62708-229-7
... of the tube confirmed the axial length of the crack ( Figure 2 ). The crack was tightly closed along most of its length and made several shallow angle bends, 10 – 20°, before coming to a stop. There was no evidence of crack branching, nor did the crack bifurcate and tear circumferentially around the tube...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001149
EISBN: 978-1-62708-232-7
... large axial thermal bending stresses. Thermal cycling of the system initiated fatigue cracks at the stiffener rings. When the critical crack size was reached, fast fracture occurred. The system was redesigned by eliminating the redundant restraints and by modifying the stiffener rings to permit free...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001733
EISBN: 978-1-62708-225-9
.... Magnification 510 (left) and 485 times (right). A brittle torsion failure 18 is shown in Fig. 5 . This type of longitudinal (axial) crack growth results quite often in wires which are metallurgically or chemically out of specification. Figure 6 shows a type of torsion failure which commonly occurs...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001536
EISBN: 978-1-62708-229-7
... axially into semicircular pieces. Dye-penetrant examinations and radiographic inspection revealed the presence of approximately 40 cracks at the inner surface in the three circumferential weld regions examined. Virtually all of the cracks were in the base metal HAZ of the forged elbow and wedge material...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0048845
EISBN: 978-1-62708-229-7
... to tube seat were revealed by surface inspection. Cracks were found to originate from inside the header, extend axially in the tube penetrations and radially from those holes into the ligaments. Cracks in 94 locations, ranging from small radial cracks to full 360Ý cracks were revealed by dye-penetrant...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0046963
EISBN: 978-1-62708-229-7
... Abstract A turbine spacer made of AMS 5661 alloy (Incoloy 901; composition: Fe-43Ni-13Cr-6Mo-2.5Ti) was removed from service because of a crack in the forward side of the radial rim. The crack extended axially for a distance of 16 mm across the spacer rim; radially, it extended to a depth...