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shearing

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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 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. 15 Typical cracks with curved crack fronts, small shear lips at the inner and outer surfaces. The surfaces linking these cracks were rougher. More
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Published: 01 June 2019
Fig. 1 Demonstrating previous work, aluminum sample shows reversing 45° shear resulting from proximity to explosion center. Other side of sample (below) is pitted by the explosive. Studies of metal fragments from crashed plane indicated that an explosion was responsible. Further evidence More
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Published: 01 June 2019
Fig. 2 The fracture surface using oblique lighting. Note the shear lip separating the primary and secondary cracks, as well as the beach marks. Mag. ∼1.4×. More
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Published: 01 June 2019
Fig. 8 Ductile morphology noted within shear lip between the primary and secondary fracture. Mag. 1,500×. 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. 4 Showing shear fracture of weld metal and root defects. More
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Published: 01 June 2019
Fig. 6 Adiabatic shear (a) eminating from white-etch layer (c). Note variation of microhardness indentations as they proceed into the white-etching layer. Etched in 2% nital. More
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Published: 01 June 2019
Fig. 7 Network of adiabatic shear deformation resulting from complex stress state in the gun during detonation. Etched in picral. More
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Published: 01 June 2019
Fig. 8 Microhardness indentations (10gf load) in a region of adiabatic shear. A light unresolved substructure is apparent in the shear band. Etched in 2% nital. DIC illumination. More
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Published: 01 June 2019
Fig. 5 Lower magnification SEM of the bolt fracture surface. The shear lip (final overload) is denoted by the arrow. Although the fracture surface was characterized completely by microvoid coalescence, a “ratcheting” effect (suggestive of cyclic crack growth or a somewhat discon-tinuous More