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fractographic analysis

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Published: 01 January 2002
Fig. 50 Fractographic analysis of failed Charpy specimens of 4340 steel tempered to various strength levels. The upper curve represents room-temperature specimens; the lower curve represents specimens broken at −196 °C (−320 °F). All percentages are estimated. Source: Ref 69 More
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Published: 15 January 2021
Fig. 50 Fractographic analysis of failed Charpy specimens of 4340 alloy steel tempered to various strength levels. The upper curve represents room-temperature specimens; the lower curve represents specimens broken at −195 °C (−320 °F). All percentages are estimated. Source: Ref 70 More
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003460
EISBN: 978-1-62708-195-5
... and Quantitative Fractography of Metal-Matrix Composites” is devoted to fatigue testing and the fractography associated with metal-matrix composites. The ninth and final article, “Failure Analysis of Ceramic-Matrix Composites,” is devoted to the fractographic analysis of ceramic-matrix composites, including...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003466
EISBN: 978-1-62708-195-5
... environmental and load conditions. The fracture surfaces of the pedigreed test specimens are examined, documented, and analyzed to determine which features are specific to a particular material, process, load, and/or environmental condition. The fractographs can then be used in the analysis of component...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006323
EISBN: 978-1-62708-179-5
... in the specific literature ( Ref 1 , 3 , 4 , 5 , 6 , 7 , 8 ). The fracture surface must be examined macro- and microscopically. Since its development, scanning electronic microscopy (SEM) has been applied to the fractographic analysis of parts that failed in service. Observations by SEM have allowed...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003226
EISBN: 978-1-62708-199-3
...” in the article “Use of Fractography for Failure Analysis.” Interpretation of Optical Fractographs A RUDIMENTARY KNOWLEDGE of how to “read” a fracture surface must be gained so that meaningful fractographs can be taken from which to describe the fracture process. Fractography can provide information...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 2024
DOI: 10.31399/asm.hb.v12.a0006842
EISBN: 978-1-62708-387-4
..., the nature of the loads and stresses that drove the fracture, and the contributing roles of design, manufacturing, material, and service (including environmental interactions). No book or class is a substitute for experience. Real-life fracture surfaces oftentimes do not display fractographic features...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000618
EISBN: 978-1-62708-181-8
... Abstract This article is an atlas of fractographs that helps in understanding the causes and mechanisms of fracture of cobalt alloys (cast Vitallium and cast ASTM F75 alloys) and in identifying and interpreting the morphology of fracture surfaces. The fractographs illustrate the fatigue...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003227
EISBN: 978-1-62708-199-3
..., electron microprobe analysis, x-ray diffraction analysis, and Auger spectroscopy. When these investigations are performed by auxiliary equipment on either a scanning or a transmission electron microscope, they may be considered to be fractographic procedures. Brittleness or ductility may be revealed...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 2024
DOI: 10.31399/asm.hb.v12.9781627083874
EISBN: 978-1-62708-387-4
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 2024
DOI: 10.31399/asm.hb.v12.a0006848
EISBN: 978-1-62708-387-4
... in the right-wing spar cap, with some detailed interpolations. The large crack jumps due to tensile tearing were helpful for part of the QF analysis. Nevertheless, the details on this fractograph are a good illustration of the effort and expertise needed to do QF for a service fatigue failure with a VA load...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 2024
DOI: 10.31399/asm.hb.v12.a0006841
EISBN: 978-1-62708-387-4
... of coatings. ancient metallic artifacts bronze chemical analysis cracks fractography fractures gold alloys metallography restoration silver alloys wrought iron THE FRACTOGRAPHIC ANALYSIS of ancient metallic artifacts is a minor or nonexistent consideration for most archaeometallurgical...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003467
EISBN: 978-1-62708-195-5
... to fractographic analysis. In the investigations presented here, final analysis often was considerably more involved than is possible to describe in a brief summary. However, the results of these investigations hopefully will enable the reader to understand the need not only for careful technical analyses...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003462
EISBN: 978-1-62708-195-5
... A review of the processing parameters used to manufacture the component, including the type of equipment, pressure, times, and temperatures used to effect the proper cure Fractographic analysis, including failure origin, crack growth direction, environmental influences, and failure mode Mechanical...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0001835
EISBN: 978-1-62708-181-8
... the shape and orientation of the dimples are clearly revealed. If there is any confusion about the orientation of the dimples, stereo fractographs should be recorded to ensure that no perspective distortion was introduced by the complex geometry. If x-ray analysis of the precipitates or inclusions held...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000626
EISBN: 978-1-62708-181-8
... Abstract This article is an atlas of fractographs that helps in understanding the causes and mechanisms of fracture of one specific type of cemented carbide, tungsten carbide. It also assists in identifying and interpreting the morphology of fracture surfaces. The fractographs illustrate...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003058
EISBN: 978-1-62708-200-6
.... P , normal load; R , size of cone crack For the case of highly angular contact asperities, fracture mechanics formulations for pyramidal indenters can be used to guide the quantitative fractographic analysis. Figure 23 shows the surface flaw geometry developed by contact with an angular...
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
... parameter, R L , is perhaps the most important profile roughness parameter for quantitative fractographic analysis. It is defined as the ratio of the true total fracture profile length, λ, and its apparent projected length, L ( Ref 17 , 18 , 19 , 20 , 21 ): (Eq 2) R L = λ / L...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000601
EISBN: 978-1-62708-181-8
... Abstract This article is an atlas of fractographs that helps in understanding the causes and mechanisms of fracture of pure irons and in identifying and interpreting the morphology of fracture surfaces. The fractographs illustrate the grain-boundary cavitation; slip lines; intergranular...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003520
EISBN: 978-1-62708-180-1
... of the guy wires had failed by fatigue, and fractographic analysis indicated that there were at least 250,000 stress cycles during the growth of the fatigue crack from the origin to final rupture. Figure 1 shows examples of fatigue striations seen on the pin surface. Figure 2 is a plot of the striations...