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Published: 15 January 2021
Fig. 20 Examples of fatigue crack initiation below the surface. (a) Crack initiation (CI) at the interface of a case-hardened shaft and (b) at an embedded oxide in a helical spring. CP, crack propagation; FF, final fracture More
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Published: 01 January 2002
Fig. 13 Fatigue-crack initiation in polystyrene from a V-notch. Note crazes surrounding and preceding the crack. 37× More
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Published: 01 January 2002
Fig. 34 Fatigue-crack-initiation behavior of various steels at a stress ratio of +0.1. Source: Ref 9 More
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Published: 01 January 2002
Fig. 35 Dependence of fatigue-crack-initiation threshold on yield strength More
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Published: 01 January 1996
Fig. 25 The effect of chloride on the corrosion fatigue crack initiation resistance of notched steel specimens. r , notch tip radius. Source: Ref 20 More
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Published: 01 January 1996
Fig. 36 Fatigue crack initiation behavior of various steels at a stress ratio of +0.1. Source Ref 17 More
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Published: 01 January 1996
Fig. 37 Dependence of fatigue crack initiation threshold on yield strength. Source: Ref 51 More
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Published: 01 January 1996
Fig. 10 Intergranular bending fatigue crack initiation at the surface of a gas-carburized and direct-cooled SAE 8219 steel specimen. Source: Ref 42 More
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Published: 01 January 1996
Fig. 19 Bending fatigue crack initiation in gas-carburized and reheated 4320 steel. The dashed line corresponds to maximum depth of surface oxidation, and all fracture below dashed line is transgranular. Source: Ref 49 More
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Published: 01 January 1996
Fig. 2 Conceptual drawing of fatigue crack initiation and growth at the toe of (left) a “Nominal” groove welded butt joint having a substantial (≈ 0.1 in. depth) weld discontinuity (slag entrapment) at the root of the critical notch (weld toe) and (right) an “Ideal” weldment with good wetting More
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Published: 01 December 2008
Fig. 11 Subsurface fatigue crack initiation in a heavy section low-alloy steel casting. Original magnification: 6×. Courtesy of Stork Technimet, Inc. New Berlin, WI More
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Published: 15 May 2022
Fig. 13 Fatigue crack initiation in polystyrene from a V-notch. Note crazes surrounding and preceding the crack. 37× More
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Published: 01 January 2003
Fig. 17 Section showing fretting damage and fatigue crack initiation in 0.2% C steel. Courtesy of R.B. Waterhouse, University of Nottingham More
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Published: 01 January 2000
Fig. 4 Fatigue-crack-initiation behavior of various steels at a stress ratio of +0.1. Source: Ref 8 More
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Published: 01 January 2000
Fig. 5 Dependence of fatigue-crack-initiation threshold on yield strength More
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Published: 01 June 2012
Fig. 23 Bone plate fractured in fatigue. Crack initiation locations are indicated by arrows. The fatigue fracture first initiated on and propagated through the narrow side before reinitiating on the thicker section. More
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Published: 01 June 2024
Fig. 21 Optical views of subsurface fatigue-crack initiation at the case-core interface in a case-hardened axle shaft. (a) Crack initiation at the case-core interface at the top portion of the view. (b) Magnified optical view of the fracture after rotating the specimen 90° relative More
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Published: 01 June 2024
Fig. 22 Backscattered electron SEM image of fatigue-crack-initiation site at a microshrinkage pore (bottom center of image) in nodular graphite cast iron. Courtesy of Element Materials Technology-Wixom More
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Published: 01 June 2024
Fig. 30 Secondary electron SEM fractographs of fatigue crack initiation at a nonmetallic inclusion in an airplane wing spar fabricated from aluminum alloy 6061-T651 More
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Published: 01 June 2024
Fig. 14 Stage I fatigue crack initiation is shown in a cast nickel-base superalloy turbine blade. Arrows in (a) indicate the crack-propagation direction away from the faceted origin site in (b). Source: Ref 54 More