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linear elastic fracture mechanics

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Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003305
EISBN: 978-1-62708-176-4
... of operating stresses. It describes the mechanisms, testing methods, and effecting parameters of two main categories of fracture mechanics: linear-elastic fracture mechanics and elastic-plastic fracture mechanics. The article concludes with a discussion on the three major progressive stages of fatigue: crack...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002383
EISBN: 978-1-62708-193-1
... Abstract This article discusses the conditions for collapse in center-cracked panels and describes the energy criterion for fracture. Measurement of toughness of any material by means of tensile and crack test is discussed. The procedures to be followed for linear elastic fracture mechanics...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003311
EISBN: 978-1-62708-176-4
... Abstract This article introduces the concepts of linear-elastic fracture mechanics (LEFM) and elastic-plastic fracture mechanics (EPFM). It reviews the fracture mechanics of ceramics and ceramic matrix composites (CMCs). The article describes some fracture toughness measurement techniques used...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003530
EISBN: 978-1-62708-180-1
... of fracture mechanics. The fracture mechanics approach is an important part of stress analysis at the tips of sharp cracks or discontinuities. The article reviews fracture mechanics concepts, including linear elastic fracture mechanics, elastic-plastic fracture mechanics, and subcritical fracture mechanics...
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
... mechanics analysis linear elastic fracture mechanics analysis stress analysis equations stress analysis THE STRESSES acting on a component may cause unacceptable deformation, cracking, or fracture. By definition, after a stress-related failure has occurred, it is a given that the stresses reached...
Series: ASM Handbook
Volume: 2B
Publisher: ASM International
Published: 15 June 2019
DOI: 10.31399/asm.hb.v02b.a0006457
EISBN: 978-1-62708-210-5
... Abstract This article discusses the concepts underlying linear elastic fracture mechanics and elastic-plastic fracture mechanics as well as their importance in characterizing the fracture behavior of the high-strength aluminum alloys. It describes the three methods used for analyzing elastic...
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Published: 01 January 1996
Fig. 10 Failure assessment diagram based on the stress intensity ratio ( K r = K / K c ) and stress ratio ( S r = σ/σ fc ) where σ fc is the plastic collapse stress. General regions are shown for linear elastic fracture mechanics (LEFM) and elastic plastic fracture mechanics (EPFM). More
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002386
EISBN: 978-1-62708-193-1
.... It summarizes the linear elastic fracture mechanics (LEFM) concepts for explaining the application of LEFM in damage tolerance analysis. The article exemplifies operating stress maps in a variety of applications. corrosion fatigue damage tolerance analysis fatigue crack growth linear elastic fracture...
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Published: 01 January 2002
Fig. 3 A general plot of the ratios of the toughness and stress showing the relationship between linear elastic fracture mechanics and strength of materials as it relates to fracture and structural integrity ( Ref 18 ) More
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002416
EISBN: 978-1-62708-193-1
... strength and tensile strength. The article reviews low velocity impacts in aircraft structures in terms of resin toughness, laminate thickness, specimen size and impactor mass, and post-impact fatigue. It explains the tension strength analysis, such as linear elastic fracture mechanics and R-curve methods...
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Published: 30 August 2021
Fig. 3 General plot of the ratios of toughness and stress showing the relationship between linear elastic fracture mechanics and strength of materials as it relates to fracture and structural integrity. K , stress-intensity factor; K Ic , plane-strain fracture toughness; S , factor More
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Published: 01 December 2009
Fig. 6 Characteristic variability of fatigue crack growth rate for microstructurally small cracks (MSC) in a population of specimens when plotted in terms of linear elastic fracture mechanical driving force. More
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Published: 01 December 2009
Fig. 8 Hierarchical thresholds for propagating cracks in a plot of completely reversed applied stress amplitude versus maximum inclusion size (thresholds for nucleation not shown). MSC, microstructurally small crack; PSC, physically small crack; LEFM, linear elastic fracture mechanics More
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Published: 15 January 2021
Fig. 66 When there is insufficient height or width of a component containing a crack, the K field created by the cracklike defect is altered by the free surfaces of the component (and, in this case, linear elastic fracture mechanics is not valid). The figure shows the effect of inadequate More
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Published: 01 January 2002
Fig. 66 When there is insufficient height or width of a component containing a crack, the K field created by the cracklike defect is altered by the free surfaces of the component. (And, in this case, linear elastic fracture mechanics is not valid.) The figure shows the effect of inadequate More
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Published: 01 January 2003
Fig. 61 Concept for combining SCC thresholds obtained on smooth and linear elastic fracture mechanics specimens to yield a conservative assessment of materials. (1) Minimum stress at which small tensile specimens fail by SCC when stressed in environment of interest. (2) Minimum stress More
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Published: 01 December 2009
-phase size/spacing that affects retardation of the crack driving force; see inset figure at lower right. Source: Ref 7 ), physically small crack (PSC) growth, and long crack (LC) growth. In the PSC regime, the crack is suitably long to be treated using conventional linear elastic fracture mechanics More
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.9781627081931
EISBN: 978-1-62708-193-1
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0005723
EISBN: 978-1-62708-193-1
... to maximum load, Tmax maximum temperature in a cycle LEFM linear elastic fracture mechanics R = crmin /crmax, or R = (1-A)l(l +A) rcp cyclic plastic zone radius Tmin minimum temperature in a cycle M bending moment M(T) center-cracked tension specimen rP rotation factor in CTOD test, plastic TEM transmission...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002380
EISBN: 978-1-62708-193-1
..., the methods in development that should be completed and in the standards books before the end of the century are also discussed. Linear-Elastic Fracture Toughness Testing Fracture mechanics and fracture toughness testing began with a strictly linear-elastic methodology using the crack-tip stress...