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1-20 of 1885
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Book Chapter
Effect of Crack Shape on Fatigue Crack Growth
Available to PurchaseBook: Fatigue and Fracture
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002359
EISBN: 978-1-62708-193-1
... Abstract This article summarizes the aspects of crack shape and irregularity that are relevant to fatigue and fracture of surface cracks. It discusses the nature of three-dimensional surface cracks and variables that influence crack shape. These variables include the grain size, residual...
Abstract
This article summarizes the aspects of crack shape and irregularity that are relevant to fatigue and fracture of surface cracks. It discusses the nature of three-dimensional surface cracks and variables that influence crack shape. These variables include the grain size, residual stresses, texture, loading mode, environment, and crack coalescence. Measurement of crack shapes or aspect ratios during fatigue crack growth can be performed by a number of techniques. The article describes the estimation of the stress-intensity factor for arbitrarily-shaped cracks and failure prediction methods for arbitrarily-shaped flaws.
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Published: 01 January 2002
Fig. 10 W14 × 730 column H-section with assumed crack shape, a , depth of surface crack; 2 c , length of surface crack
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The nature of crack shape development during (a) the coalescence of two sem...
Available to PurchasePublished: 01 January 1996
Fig. 5 The nature of crack shape development during (a) the coalescence of two semicircular cracks, (b) the coalescence of multiple cracks in autofrettaged gun tubes, and (c) the application of varying mean stress fatigue loading
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Published: 01 January 1996
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Effect of mesoscale crack-growth features on lifetime. The size, shape (asp...
Available to PurchasePublished: 01 June 2024
Fig. 28 Effect of mesoscale crack-growth features on lifetime. The size, shape (aspect ratio), and orientation of microtextured regions in a fatigue sample affect the early stages of crack-shape evolution and can lead to variability in lifetime at otherwise nearly constant loading conditions
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(a, b) Schematics of crack shapes observed in different orientations of fat...
Available to PurchasePublished: 01 January 1996
Fig. 8 (a, b) Schematics of crack shapes observed in different orientations of fatigue tests in 7010 aluminum alloy. (c) The variation of aspect ratio with crack growth in 8090 Al-Li alloy, before and after shot peening
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Crack shapes observed in a titanium aluminide alloy, revealed by heat tinti...
Available to PurchasePublished: 01 January 1996
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Micrographs of a plastic zone shape ahead of the crack tip in both brittle ...
Available to PurchasePublished: 15 May 2022
Fig. 7 Micrographs of a plastic zone shape ahead of the crack tip in both brittle and ductile regimes under fatigue mode in (a) optical, (b) scanning electron, and (c) polarized light. Source: Ref 64
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Published: 01 January 2000
Book Chapter
An Introduction to Fracture Mechanics
Available to PurchaseBook: Fatigue and Fracture
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002378
EISBN: 978-1-62708-193-1
... strain fracture toughness, denoted as K IC . It presents formulas for the stress-intensity parameter as a function of crack size, crack shape, applied stress (or load), and geometry of load application. applied stress crack shape crack size cracks fracture mechanics plane strain fracture...
Abstract
The concepts of fracture mechanics are basic ideas for developing the methods of predicting the load-carrying capabilities of structures and components containing cracks. This article provides an introduction to the methodology for computing the onset of fracture and describes plane strain fracture toughness, denoted as K IC . It presents formulas for the stress-intensity parameter as a function of crack size, crack shape, applied stress (or load), and geometry of load application.
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Definition of crack dimensions for an almond-shaped crack in a solid cylind...
Available to PurchasePublished: 01 January 1996
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A close-up of the crack origin and elliptical-shaped crack-front marking at...
Available to PurchasePublished: 15 May 2022
Fig. 30 A close-up of the crack origin and elliptical-shaped crack-front marking at the 3 o’clock location relative to Fig. 29 . Courtesy of Engineering Systems, Inc.
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Published: 01 January 2002
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Crack (a) and broken-open fracture surface (b) of failed wedge-shaped middl...
Available to PurchasePublished: 01 January 2002
Fig. 12 Crack (a) and broken-open fracture surface (b) of failed wedge-shaped middle tapered ring. 6×
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Shapes of surface cracks, revealed by heat tinting before specimen fracture...
Available to PurchasePublished: 01 January 1996
Fig. 9 Shapes of surface cracks, revealed by heat tinting before specimen fracture. The cracks were grown from (a) shallow and (b) deep notches
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Published: 01 January 2006
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Shell mold for long narrow castings that has diamond-shaped crack strips at...
Available to PurchasePublished: 01 December 2008
Fig. 21 Shell mold for long narrow castings that has diamond-shaped crack strips at ends and along sides to prevent cracking and distortion of casting cavities
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Fractured L-shaped bracket and cracked welded connection between the exhaus...
Available to Purchase
in Failure Analysis of Welded Structures
> Analysis and Prevention of Component and Equipment Failures
Published: 30 August 2021
Fig. 26 Fractured L-shaped bracket and cracked welded connection between the exhaust manifold and the mounting flange
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Published: 15 January 2021
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Published: 15 May 2022
Fig. 12 An S-shaped fatigue crack propagation. K , stress-intensity factor; K c , fracture toughness curve indicating its three characteristic regions
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