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Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540379
EISBN: 978-1-62708-309-6
... Abstract This appendix presents an analytical model that estimates damage rates for both crack initiation and propagation mechanisms. The model provides a nonarbitrary definition of fatigue crack initiation length, which serves as an analytical link between initiation and propagation analyses...
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Published: 01 November 2012
Fig. 58 Influence of texture on fatigue crack growth in Ti-6Al-4V. Fatigue crack growth rates are higher when basal planes are loaded in tension. The elastic modulus in tension for the basal texture (B) is 109 GPa (15.8 × 10 6 psi); for the transverse texture (T), 126 GPa (18.3 × 10 6 psi More
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Published: 01 August 2005
Fig. 5.40 Fatigue crack growth behavior of 7075-T6 aluminum under remote and crack-line loading conditions. Source: Ref 5.41 More
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Published: 30 June 2023
Fig. 9.16 Fatigue crack growth testing and data analysis. (a) Crack length measurement, (b) calculation of crack growth rate, and (c) analysis of da/dN versus stress intensity range. More
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Published: 01 October 2011
Fig. 7.25 Fatigue crack growth per fatigue cycle ( da / dN ) versus stress intensity variation ( Δ K ) per cycle. The C and n are constants that can be obtained from the intercept and slope, respectively, of the linear log da / dN versus log Δ K plot. This equation for fatigue crack More
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Published: 01 October 2011
Fig. 16.24 Fatigue failure surface from a piston rod. The fatigue crack initiated near a forging flake at the center and propagated slowly outward. The outer area is the region of final brittle fracture overload. Source: Ref 16.5 More
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Published: 01 December 2003
Fig. 3 Thermal fatigue failure and conventional fatigue crack propagation fracture during reversed load cycling of acetal. Source: Ref 10 More
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Published: 01 October 2011
Fig. 16.13 Thermal fatigue crack produced in the hardfacing alloy on an exhaust valve from a heavy-duty gasoline engine More
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Published: 01 September 2008
Fig. 15 Scanning electron micrograph of fatigue crack initiating on worn carbonitrided steel. Original magnification: approximately 4000× More
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Published: 01 September 2008
Fig. 13 Stages I and II of fatigue crack propagation More
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Published: 01 September 2008
Fig. 18 Schematic representation of the R ratio effect on fatigue crack growth curves. The near-threshold, Paris regime, and final failure regions are also indicated on the curves. More
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Published: 01 September 2008
Fig. 31 Fatigue crack site. (a) General view. (b) Detail. The inclusion that originated the site was removed from the fracture surface. SEM image with secondary electrons More
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Published: 01 September 2008
Fig. 32 Concentration of inclusions near the fatigue crack site. (a) SEM image with secondary electrons. (b) Backscattered electrons More
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Published: 01 September 2008
Fig. 70 Model of fatigue crack initiation due to the presence of inclusions in a nonmartensitic (decarburized) steel layer. Source: Ref 122 More
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Published: 01 September 2008
Fig. 9 Location of fatigue crack initiation on nitrided 40HM (4140)-grade steel. Original magnification: 100× More
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Published: 01 September 2008
Fig. 27 Surface fracture spring. The dotted arrow shows the fatigue crack nucleus, and the dashed arrow shows the fatigue-to-brittle fracture transition. The solid arrow shows the surface analyzed by scanning electron microscopy. Original magnification: 6× More
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Published: 01 December 2003
Fig. 7 Specimens employed in fatigue crack propagation studies. (a) Single-edge-notch specimen. (b) Compact-tension specimen More
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Published: 01 December 2003
Fig. 11 Comparison of fatigue crack propagation behavior in the Paris regime for several amorphous and semicrystalline polymers. Note enhanced fatigue resistance of the semicrystalline polymers. PC, polycarbonate; PMMA, polymethyl methacrylate; PPO, polypropylene oxide; PVF, polyvinyl formal More
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Published: 01 December 2003
Fig. 12 Fatigue crack propagation behavior for a rubber-toughened epoxy. The addition of rubber decreases the slope, m , at high crack growth rates due to toughening mechanisms and retarded crack growth. CTBN, carboxylterminated polybutadiene acrylonitrile rubber; MBS, methacrylate-butadiene More
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Published: 01 December 2003
Fig. 8 An S-shaped fatigue crack propagation. K , stress-intensity factor; K c , fracture toughness curve indicating its three characteristic regions. More