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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c0048403
EISBN: 978-1-62708-226-6
... direction. A zone of heavily deformed grains at the fracture edge was revealed by longitudinal metallographic examination. The shearing fractures of a commercially pure titanium screw and a cast cobalt-chromium-molybdenum alloy were discussed for purpose of comparison. Deformation Surcigal implants...
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Published: 01 January 2002
Fig. 11 Mechanically forced shearing fracture of type 316LR stainless steel screw. (a) Fracture surface with typical spiral deformation texture. SEM. (b) Close-up of fracture surface with shear dimples oriented in twisting direction. (c) Fracture edge with flow lines. (d) Longitudinal More
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Published: 01 June 2019
Fig. 18 Brittle fracture produced during shearing operation More
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Published: 01 June 2019
Fig. 1 Mechanically forced shearing fracture of type 316LR stainless steel screw. (a) Fracture surface with typical spiral deformation texture. SEM. (b) Close-up of fracture surface with shear dimples oriented in twisting direction. (c) Fracture edge with flow lines. (d) Longitudinal More
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Published: 15 January 2021
Fig. 5 Adhesive wear mechanisms. (a) Adhesive bonding. (b) Plastic shearing. (c) Fracture-induced formation of third-body particles. Adapted from Ref 25 More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001203
EISBN: 978-1-62708-235-8
... Abstract Three bearing bosses from the cover of scrap shears were sent in for examination. They had torn off the base plate to which they had been welded by fillet welds all around. Two of these were examined. They showed entirely the same symptoms. The bosses had broken away on three sides...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001660
EISBN: 978-1-62708-236-5
... Abstract Failure analysis was performed on threaded Ti-6Al-4V fasteners that had fractured in the threads during installation. Scanning electron microscopy (SEM) and optical metallography revealed that the fractures initiated in circumferential shear bands present at the thread roots...
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Published: 01 January 2002
Fig. 46 Crack propagation in shear bands in a 7075-T6 plate specimen. Shear banding has occurred on four planes of high shear stress (two containing the width direction and two containing the thickness direction). Crack initiation has occurred in multiple locations, including the edge More
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Published: 01 January 2002
Fig. 46 Applied shear stress and material shear strength as a function of depth representing types of fatigue damage. (a) No damage. (b) Subsurface-origin, macropitting fatigue. (c) Micropitting or surface-origin macropitting fatigue. (d) Subcase fatigue. More
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Published: 01 January 2002
Fig. 23 Shear displacement of a spall prior to complete separation along the shear band. 330× More
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Published: 01 June 2019
Fig. 3 These shear lips have shear lips of their own. More
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Published: 15 May 2022
Fig. 7 Viscosity and shear stress versus shear rate for PDMS (polydimethylsiloxane) from rotational rheometry More
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Published: 15 January 2021
Fig. 11 Measuring crack depth by a shear-wave technique. (a) Pulse-echo shear wave to crack root. (b) Scan on surface ( x ) and reflection from crack tip. (c) Differences in pulse arrival times shown in A-scan. Defect size estimated from geometry (b) or x shown in (c). Source: Ref 26 More
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Published: 15 January 2021
Fig. 55 Applied shear stress and material shear strength as a function of depth representing types of fatigue damage. (a) No damage . (b) Subsurface-origin, macropitting fatigue . (c) Micropitting or surface-origin macropitting fatigue . (d) Subcase fatigue More
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Published: 01 January 2002
Fig. 28 Spall cavity formed by the action of several shear bands. (a) 7×. (b) 29.5×. (c) 11×. (d) 11× More
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Published: 01 January 2002
Fig. 1 Free-body diagrams showing orientation of normal stresses and shear stresses in a shaft and the single-overload fracture behavior of ductile and brittle materials. (a) Under simple tension. (b) Under torsion. (c) Under compression loading. See text for discussion. More
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Published: 01 January 2002
Fig. 7 4340 steel rotor shaft that failed by torsional fatigue. (a) Shear groove designed to protect gear mechanism from sudden overload. Dimensions are in inches. (b) Star-shaped pattern on a fracture surface of the shaft. (c) Longitudinal and transverse shear cracks on the surface More
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Published: 01 January 2002
Fig. 15 Shear stresses produced by a cylindrical roller below the surface of o bearing raceway. Source: Ref 5 More
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Published: 01 January 2002
Fig. 26 Fatigue failure of fasteners in single-lop shear carbon-graphite composite joints. (a) Fastener pullout resulting from a static tensile load. (b) Fatigue failure of fasteners initiated by cocking of the fasteners. Both 1 1 3 × More
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Published: 01 January 2002
Fig. 44 Two shear knives made from AISI H13 tool steel. The knives were used to grip hot-rolled bars after rolling so that they could be separated. The knives failed by spalling of the gripping edge after normal service life. More