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crack nucleation

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Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002355
EISBN: 978-1-62708-193-1
... of card slip in fatigue slip band Fig. 18 Neumann's model of crack nucleation. In part (c), A represents a crack nucleus. Source: Ref 42 Fig. 20 Oding's model of crack nucleation. b , Burgers vector. Source Ref 80 Fig. 12 Model by Polák ( Ref 47 ) for surface relief...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006775
EISBN: 978-1-62708-295-2
... Abstract This article focuses on characterizing the fracture-surface appearance at the microscale and contains some discussion on both crack nucleation and propagation mechanisms that cause the fracture appearance. It begins with a discussion on microscale models and mechanisms for deformation...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003313
EISBN: 978-1-62708-176-4
... better understanding and simulation of both crack nucleation and the subsequent crack growth mechanisms. This article reviews three basic types of fatigue properties: stress-life, strain life, and fracture mechanic crack growth. crack initiation crack nucleation crack propagation fatigue...
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
..., and then was vacuum cadmium plated. Cracks were attributed to hydrogen embrittlement. See also Fig. 404 , 405 , 406 , 407 , 408 , 409 , 410 , 411 , and 412 . 0.5× Fig. 404 Surface of the crack visible at A in Fig. 403 , opened for examination, showing two internal points of crack nucleation, which...
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
... of monitoring via an inspection scheme. This article begins with a discussion on the stages of the fatigue damage process. It describes hierarchical multistage fatigue modeling and several key points regarding the physics of crack nucleation and microstructurally small crack propagation in the HCF regime...
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
... candy fracture, cleavage fracture, brittle fracture, high-cycle fatigue fracture, fatigue striations, hydrogen-embrittlement failure, creep crack propagation, fatigue crack nucleation, intergranular creep fracture, torsional overload fracture, stress-corrosion cracking, and grain-boundary damage...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002367
EISBN: 978-1-62708-193-1
...) data. Fig. 1 Metallic fatigue. The stages of fatigue include cyclic slip (crack nucleation) and stage I and stage II crack growth. Fig. 4 Selected illustration of 28 details from the 53 structural weld details catalogued by Munse et al. in Ref 1 . A complete list of the 53 details...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002348
EISBN: 978-1-62708-193-1
... Abstract This article provides ASTM standard definitions for fatigue and describes the approaches that are used to design finite or infinite life, used in a complementary sense in fatigue design. It explains four distinct phases of fatigue: nucleation, structurally dependent crack propagation...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001341
EISBN: 978-1-62708-173-3
... Table 1 Effect of morphological features of the microstructure on crack nucleation and propagation in α + β titanium alloys Structure Crack nucleation Crack growth Tensile ductility as a function of plastic zone size Toughness as a function of crack propagation Lenticular...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005613
EISBN: 978-1-62708-174-0
... be if most of the carbon formed carbides (by the lever rule). This fact will increase the number of crack nucleation sites and thereby contribute to the inferior toughness of ICGC HAZ. As is to be expected, the volume fraction of the M-A constituent also depends on the hardenability of the steel, which...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002372
EISBN: 978-1-62708-193-1
... nucleation time. A shift in cycles to failure at a given strength level is attributed to an increase in crack propagation rate and is often observed under corrosive environments. The second materials selection guide is the use of alloy compositions and thermomechanical treatments for existing alloys...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003316
EISBN: 978-1-62708-176-4
..., usually at the edges of the fretting contact region, where shear stresses are predicted to be highest, at some microscopic inhomogeneity. The two views are not significantly different. The second view is more amenable to modeling and FEM analysis. The location of crack nucleation depends...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003666
EISBN: 978-1-62708-182-5
... tension testing stress corrosion cracking stress corrosion testing Abstract Abstract This article describes the incubation, nucleation, and propagation of stress-corrosion cracking and how to evaluate it using standard tests. It discusses constant-strain, constant-load, bending, and uniaxial...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International