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finite-endurance range

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Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001760
EISBN: 978-1-62708-241-9
...Abstract Abstract This article presents a failure analysis of an aluminum cylinder head on an automotive engine. During an endurance test, a crack initiated from the interior wall of a hole in the center of the cylinder head, then propagated through the entire thickness of the component...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003516
EISBN: 978-1-62708-180-1
... equations or computational mechanics (finite-element analysis). One needs to know the geometries and the materials as well as the processing history and mechanical properties of the materials. Thus far, this article has briefly discussed the mechanics, the structures, and, to a lesser extent...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001852
EISBN: 978-1-62708-241-9
.... With the help of finite element modeling, they analyzed the material as well as the design and in-service application of the mold. They discovered that overconstraining the mold, while it was in service, caused excessive thermal stresses which accelerated crack initiation and propagation. Investigators also...
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
... for Wire Rope” , Journal of Applied Mechanics , March 1945 , p. A-33 . 5. Peter Savill L. , “Parameter's which affect the endurance of wire ropes: A ropemaker's viewpoint” , Wire Industry , Vol. 47 , no. 554 , p. 105 , 1980 . 6. Wiek I. L. , “Calculation of rope endurance...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003544
EISBN: 978-1-62708-180-1
... linear elastic fracture mechanics treatment of long cracks at threshold to an endurance-limit-dominated behavior of short cracks. Kitagawa diagrams are used to depict this type of situation. Below a surface crack length of 0.5 mm (0.02 in.), the threshold stress range departs gradually from its...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006779
EISBN: 978-1-62708-295-2
... loading. The S - N curve is the basis for fatigue design and shows the relationship between a constant stress amplitude, S a (or stress range, Δ S ), and the number of cycles to failure, N . The regions of the curve can be separated into the quasi-static, finite-life, and infinite-life regimes...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003528
EISBN: 978-1-62708-180-1
.... Source: Ref 43 High-cycle fatigue may occur when the cyclic load range does not exceed the cyclic yield strength of the material but exceeds the fatigue limit (endurance limit) of the material (although many materials, such as aluminum, do not have well-defined fatigue limits). In components...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006829
EISBN: 978-1-62708-295-2
... imply the use of numerous sensors and therefore connectors right next to the engines (automotive, plane, train, etc.). Enduring high-frequency vibrations as well as cyclical thermal loadings, the pin-clip interface experiences fretting wear damage ( Fig. 5 ). Noble materials such as gold plating...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006768
EISBN: 978-1-62708-295-2
... limited to polycrystalline materials ( Ref 6 ), that is, in materials with a grain structure (long-range ordering) as normally found in metals and their alloys as well as in polycrystalline ceramics (i.e., oxides, carbides, nitrides, etc.). Exceptions occur in semiconductor analysis in which strain (Eq 2...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003564
EISBN: 978-1-62708-180-1
... of 5.93 GPa (0.86 × 10 6 psi) and rod rotation speed of 3600 rpm. Research showed that the materials exhibited differences in life span of several orders of magnitude, and the failure mode was spalling fatigue. Silicon nitride materials can exhibit a wide range of RCF endurance. Under relatively high...
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
... Abstract This article outlines the basic steps to be followed and the range of techniques available for failure analysis, namely, background data assembling, visual examination, microfractography, chemical analysis, metallographic examination, electron microscopy, electron microprobe analysis...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001810
EISBN: 978-1-62708-180-1
... materials, such as 8620, for roller bearings since the turn of the century in the United States. A commonly accepted minimum surface hardness for most bearing components is 58 HRC. The carburizing grades have a core hardness range of 25 to 45 HRC. At surface-hardness values below the minimum 58 HRC...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003524
EISBN: 978-1-62708-180-1
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003543
EISBN: 978-1-62708-180-1
...-stress rupture has ductile appearance (see creep) • Load exceeded the dynamic strength of the part• Check for proper alloy and processing as well as proper toughness, grain size• Loading direction may show failure was secondary or impact induced• Low temperatures • Cyclic stress exceeded the endurance...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006774
EISBN: 978-1-62708-295-2
... with crack initiation, crack growth, and final overload ( Fig. 41 ). Fatigue cracks are typically TG, but IG fatigue does occur in some circumstances, such as high strain (low-cycle) fatigue or at low stress-intensity range when environmental factors become more dominant or when microstructural variations...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006778
EISBN: 978-1-62708-295-2
... or impact induced • Low temperatures • Cyclic stress exceeded the endurance limit of the material • Check for proper strength, surface finish, assembly, and operation • Prior damage by mechanical or corrosion modes may have initiated cracking • Alignment, vibration, balance • High cycle low stress: large...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006787
EISBN: 978-1-62708-295-2
... or coated alloys at high temperatures is often difficult because of the extreme range of composition of the corrosive gaseous and/or fluid environments. Moreover, corrosion predictions are further complicated, because materials have inhomogeneous processing-derived features such as precipitates...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003508
EISBN: 978-1-62708-180-1