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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0047105
EISBN: 978-1-62708-225-9
... Abstract The locking collar on a machine failed suddenly when the shaft it restrained was inadvertently subjected to an axial load slightly higher than the allowable working load. The locking collar fractured abruptly, producing four large fragments. This allowed the shaft to be propelled...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0089254
EISBN: 978-1-62708-225-9
... Abstract A failed tapered-ring sprocket locking device consisted of an assembly of four tapered rings that are retained by a series of cap screws. The middle wedge-shaped rings were pulled closer as the screws were tightened forcing the split inner ring to clamp tightly onto the shaft. One...
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Published: 01 June 2019
Fig. 8 Failure of Locking Lug on a Cartridge Chamber. More
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Published: 01 June 2019
Fig. 1 Microstructure of a locking block that contained decarburization. Note the softer surface indicated by the larger Knoop microhardness readings. (200× magnification) More
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Published: 01 June 2019
Fig. 1 Failure of a 4140 steel locking collar machined from rolled plate. (a) Collar assembly showing fracture location. (b) Illustration of the failure with respect to the plate orientation. (c) SEM micrograph showing the cleavage-failure mode. (d) Composite micrograph showing microstructural More
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Published: 01 June 2019
Fig. 1 Sketch of tapered-ring locking device application More
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Published: 01 June 2019
Fig. 2 Four tapered rings of locking device. Arrow indicates crack in one of the middle rings. More
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Published: 01 June 2019
Fig. 3 Plan view (left) and cross section (right) through tapered-ring locking device assembly More
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Published: 01 December 1992
Fig. 2 Locking nut with the two pins intact. More
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Published: 01 December 1992
Fig. 3 Details of disk locking arrangement. More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001170
EISBN: 978-1-62708-225-9
... Abstract The lock ring of a centrifuge drum was fractured after one year's operation. The ring, with a trapezoidal thread on the inside, was made of steel with approximately 0.5%C-1.3%Mn-1.1%Cr and was hardened and tempered to 105 kp/sq mm strength at 11% elongation (d10). It fractured radially...
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Published: 01 June 2019
Fig. 1 Schematic of the section of a locked coil wire rope showing outer layer of interlocking Z-profile wires More
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Published: 01 June 2019
Fig. 1 Door lock mechanism assembly. More
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Published: 01 June 2019
Fig. 2 Door lock cycling fixture. More
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Published: 01 June 2019
Fig. 3 Door lock cycling fixture. More
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Published: 01 June 2019
Fig. 3 Overall view of the central lock, the unused new bell “N,” the damaged bell “S,” and the cracked bells “V1” through “V8,” shown at 1 4 full size. More
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Published: 01 December 2019
Fig. 1 Schematic diagram showing ( a ) cross section of the locked coil rope (round wire core with two layers of shaped wires). ( b ) Wires in the layer that has failed prematurely More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001732
EISBN: 978-1-62708-218-1
.... The Weibull distribution is the statistical model used as a basis for these techniques. This method of failure analysis provides the engineer with clear, positive design direction. Door lock assembly Fatigue (materials) Statistical analysis Weibull distribution Metal (Other, miscellaneous...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001778
EISBN: 978-1-62708-241-9
... Fig. 1 Schematic diagram showing ( a ) cross section of the locked coil rope (round wire core with two layers of shaped wires). ( b ) Wires in the layer that has failed prematurely Fig. 2 A visual photograph showing the view of the ropeway site near the saddle where the failure occurred...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001646
EISBN: 978-1-62708-219-8
... Abstract Locked coil wire ropes, by virtue of their unique design and construction, have specialized applications in aerial ropeways, mine hoist installations, suspension bridge cables, and so forth. In such specialty ropes, the outer layer is constructed of Z-profile wires that provide...