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fractography

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Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006870
EISBN: 978-1-62708-395-9
... Abstract This article examines the concept of fractography as applied to elastomeric rubbery materials. It considers four general categories of physical root failure causes: design defects, material defects, manufacturing defects, and service life anomalies. Examples of real-world failures...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001539
EISBN: 978-1-62708-236-5
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
... obtained. 1 A wealth of information about the microscopic aspects of a failure exists on a fracture surface. 2 Electron fractography has become a valuable tool for use in analyzing a fracture surface. Ref 3 , 4 , 5 , 6 , 7 The scanning electron microscope (SEM) offers resolution better than...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001537
EISBN: 978-1-62708-234-1
... of fracture. Electron fractography revealed that five different modes of crack growth were operative as the part failed. Region 1 was a shallow zone (about 0.002 in. at its deepest) of dimpled structure typical of an overload failure. Region 2 was a zone that grew by a stress corrosion mechanism. Through...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001671
EISBN: 978-1-62708-234-1
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001538
EISBN: 978-1-62708-217-4
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001540
EISBN: 978-1-62708-217-4
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001542
EISBN: 978-1-62708-217-4
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001605
EISBN: 978-1-62708-217-4
... Abstract After a quick-release fitting of an ejection seat broke, an investigation was performed to determine the manner and cause of crack propagation. Most fractography-based investigations aim to characterize only qualitative characteristics, such as the fracture orientation and origin...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001541
EISBN: 978-1-62708-235-8
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003536
EISBN: 978-1-62708-180-1
... Abstract The quantitative characterization of fracture surface geometry, that is, quantitative fractography, can provide useful information regarding the microstructural features and failure mechanisms that govern material fracture. This article is devoted to the fractographic techniques...
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Published: 01 January 2002
Fig. 13 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. 1 Fractography surface of rim cracking 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
Image
Published: 01 June 2019
Fig. 2 Fractography revealed that the fracture surface of Fig. 1 consists of five regions. At the top, Region 1, 0.002 in. deep, displayed overloading. Region 2 (0.003 in. deep) is characterized by stress corrosion. Fatigue marks were evident in Region 3; it was 0.005 in. in depth. Regions 4 More
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Published: 01 June 2019
Fig. 4 Fractography of failed bolt. More
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Published: 30 August 2021
Fig. 14 (a) Fracture surface and (b) SEM fractography of a coil that failed due to excessive decarburization More
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Published: 15 May 2022
Fig. 8 SEM fractography shows the fatigue-fracture process in a high-density polyethylene sample fatigued at 23 °C (73 °F) and a frequency of 1 Hz. From the notch at (a) 4 mm (0.2 in.) and (b) 8 mm (0.4 in.). The arrows in (b) point to filler material particles. Source: Ref 65 More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c0047312
EISBN: 978-1-62708-224-2
.... A failure analysis was requested to determine the cause of fracture. Two hooks were submitted for examination. Analysis (visual inspection, 2.7x light fractography, chemical analysis, 110x SEM fractography, 27x/110x/215x nital-etched micrographs) supported the conclusions that this component fractured...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001680
EISBN: 978-1-62708-221-1
..., fractography, and microhardness testing were used to gain an understanding of the failure mechanism. Wire failures occurred predominantly at characteristic wear sites between strands. These wear sites are identifiable by a large reduction in diameter; however, reduction in area was not responsible...