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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 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: 01 June 2019
Fig. 18 Brittle fracture produced during shearing operation 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 June 2019
Fig. 3 These shear lips have shear lips of their own. More
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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 June 2019
Fig. 5 Region showing torsional shear in the exemplar test specimen subjected to steady torsional loads. More
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Published: 01 June 2019
Fig. 2 Shear fracture of a commercially pure titanium screw. (a) SEM fractograph showing spiral textured fracture surface of sheared-off screw. Typical deformation lines are fanning out on the thread. (b) Uniformly distributed shearing tongues and dimples More
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Published: 01 June 2019
Fig. 3 Sheared-off cast cobalt-chromium-molybdenum screw. SEM fractography. (a) Overview of portion of rough fracture surface. (b) Area with fracture planes of three differently oriented grains (single arrow, a). (c) Shearing structures and dimples in grain identified by the numeral 1 in (b More
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Published: 01 June 2019
Fig. 8 Vertical shear wall between two terraces. More
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Published: 01 June 2019
Fig. 14 Vertical shear step joining two terraces. More
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Published: 01 June 2019
Fig. 11 Charpy impact results plotted as temperature vs. energy absorbed, % shear failure and % contraction for longitudinal steel samples taken from the mainmast of the U.S.S. Arizona. More
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Published: 01 June 2019
Fig. 5 Large shear ridge (split) in failed bolt. More
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Published: 01 June 2019
Fig. 6 Appearance of surface of major crack after breaking open. Note shear lip adjacent to inside surface (top of photograph). More
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Published: 01 June 2019
Fig. 14 Section indicating sequence of cracking. The shear failure occurred during the subsequent pressure test. More
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Published: 01 June 2019
Fig. 9 Electron micrographs of the shear band regions of the pins tested to failure for comparison. The manufacturer A shear band (a) is at a much lower angle to the pin axis than the other manufacturer's shear band (b). More
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Published: 01 June 2019
Fig. 9 Showing section through sheared end of tie-bar ×50 More
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Published: 01 June 2019
Fig. 30 Showing as-sheared end of plate ×10 More