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fatigue crack growth

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Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005419
EISBN: 978-1-62708-196-2
... Abstract Understanding fatigue crack growth is critical for the safe operation of many structural components. This article reviews the standard fracture mechanics and methods to determine the crack growth rate for a material and loading condition experimentally. It also addresses the two most...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000623
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 titanium alloys and in identifying and interpreting the morphology of fracture surfaces. The fractographs illustrate the fracture surface, fatigue crack growth, intergranular...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003241
EISBN: 978-1-62708-199-3
... Abstract This article reviews the various types of mechanical testing methods, including hardness testing; tension testing; compression testing; dynamic fracture testing; fracture toughness testing; fatigue life testing; fatigue crack growth testing; and creep, stress-rupture, and stress...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001286
EISBN: 978-1-62708-170-2
... Abstract This article describes eight stages of the atomistic film growth: vaporization of the material, transport of the material to the substrate, condensation and nucleation of the atoms, nuclei growth, interface formation, film growth, changes in structure during the deposition, and...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005405
EISBN: 978-1-62708-196-2
... stress and strain field to influence of only the remote nominal fields, incorporating the notch as part of the crack. The treatment of fatigue crack initiation, involving the formation and early growth of cracks to some detectable size, has traditionally been distinguished from damage-tolerant analysis...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005411
EISBN: 978-1-62708-196-2
... kinetics that are based on the characteristics of the rate-controlling step. Thus, to accurately predict the dwell-time effects on the fatigue crack growth behavior in turbine disk materials at elevated temperatures, accurate descriptions of the kinetics of each damage mechanism are needed...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006776
EISBN: 978-1-62708-295-2
... frequency and time history of loading ( Ref 32 ). Heat resulting from mechanical hysteresis during cyclic loading of plastics can cause thermal failure. Additionally, depending on load level and time history, fatigue cracks in polymers may not propagate steadily (with an increment of growth for each...
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
... stresses and strains, the subsequent crack growth mechanisms, and final fracture. They have also contributed to the optimization of materials, manufacturing, and component design as well as to the conduction of a proper failure analysis. Table 1 Methods and material characteristics for fatigue...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005654
EISBN: 978-1-62708-198-6
... tensile and compressive stresses. Crack propagation tests use a fracture mechanics approach in which the growth of preexisting cracks due to cyclic loading is monitored. A fundamental parameter used to describe a fatigue process in smooth specimens is the stress ratio R , defined as: (Eq 15) R...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0001837
EISBN: 978-1-62708-181-8
... fracture; k = 1, quasi-cleavage fracture; k = 2, quasi-dimple fracture; and k = 3, dimple fracture. In an early study, the effects of microstructure on fatigue crack growth were investigated in a low-carbon steel ( Ref 86 ). Inspection of crack traces in the plane of polish showed that the crack...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006781
EISBN: 978-1-62708-295-2
... exhibited effectively no fatigue crack growth, and N p = 0. It is important to define failure for each component of interest based on loading conditions, boundary conditions, the ability to inspect the component, and the effect of failure on surrounding components and human life, among other things. In a...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006792
EISBN: 978-1-62708-295-2
... selection. In general, a harder surface is more resistant to wear, fatigue, and so on. At the same time, compressive residual stresses near the surface of the component will slow crack growth such that any microcracks that form propagate more slowly, thereby increasing the time until failure. Therefore...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000608
EISBN: 978-1-62708-181-8
..., impact fracture, fatigue fracture surface, reversed torsional fatigue fracture, transgranular cleavage fracture, rotating bending fatigue, tension-overload fracture, torsion-overload fracture, slip band crack, crack growth and crack initiation, crack nucleation, microstructure, hydrogen embrittlement...
Book Chapter

Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006790
EISBN: 978-1-62708-295-2
... rapid crack growth by ductile or brittle cracking; more progressive (subcritical) forms involve crack growth by fatigue, creep, or environmentally-assisted cracking. Corrosion and wear are another form of progressive material alteration or removal that can lead to failure or obsolescence...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006777
EISBN: 978-1-62708-295-2
... become the preferred path of crack growth. The article describes in more detail some typical mechanisms that cause IG fracture. It discusses the causes and effects of IG brittle cracking, dimpled IG fracture, IG fatigue, hydrogen embrittlement, and IG stress-corrosion cracking. The article presents a...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000630
EISBN: 978-1-62708-181-8
...-brittle fatigue crack propagation, brittle and ductile fracture, crack-growth mechanisms, tearing, fibrillation, and fatigue striations of these surfaces. crack growth fatigue crack propagation fatigue striations fractograph polycarbonate polyethylene polyimide polymers Fig. 1317...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006767
EISBN: 978-1-62708-295-2
... elastic fracture mechanics analysis, with some mention of elastic-plastic fracture mechanics analysis. The article describes the probabilistic aspects of fatigue and fracture. Information on crack-growth simulation of the material is also provided. crack-growth simulation elastic-plastic fracture...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000610
EISBN: 978-1-62708-181-8
... of fatigue-crack fracture in a specimen of AISI type 301 stainless steel that was highly stressed, breaking in 2000 cycles. Crack growth was very irregular, with many pronounced offsets. At center, twin boundaries have affected crack propagation. Area in rectangle is shown at higher magnification in...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006780
EISBN: 978-1-62708-295-2
... on the crack tip stress field. In these cases, the creep crack growth rate ( da / dt ) follows the conventional fatigue crack growth rate and can be correlated with K , the stress-intensity factor, with a power-law dependence as: d a / d t = α K n where α and n are the curve...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000609
EISBN: 978-1-62708-181-8
... nucleation, growth, and eventual coalescence of grain-boundary cavities. The cavities nucleated on complex sulfides. SEM, 2500× (D.P. Pope, University of Pennsylvania, and S.-H. Chen, Norton Christensen) Possible explanation of why phosphorus enhances the ductility of Cr-Mo-V steel. Composition of the...