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crack initiation

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Published: 01 January 2002
Fig. 89 Crack-initiation locations in compression loading. Crack initiation may occur along the centerline and at the surface on a hoop plane. Further deformation may close the centerline crack. More
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Published: 15 January 2021
Fig. 89 Crack-initiation locations in compression loading. Crack initiation can occur along the centerline and at the surface on a hoop plane. Further deformation can close the centerline crack. More
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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 December 2019
Fig. 4 Low magnification SEM micrograph of the crack initiation site, with crack arrest markings noted 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 2002
Fig. 60 SEM micrograph showing (a) overall fracture surface in crack initiation area and (b) detail at area C in (a), showing shrinkage porosity More
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Published: 01 January 2002
Fig. 70 Close-up view of the crack-initiation area in Fig. 69 , showing slag inclusions (dark spots). ∼10× More
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Published: 01 January 2002
Fig. 15 Crack initiation on type 316LR stainless steel dynamic compression plate. (a) Anterior-posterior radiograph. The plate was used to treat the nonunion of a fracture between the fourth and seventh screws. The plate was bent intraoperatively to fit the contour of the bone. (b) Radiograph More
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Published: 01 June 2019
Fig. 5 Pin cracks in the fine threaded part, opened up (crack initiation designated by arrows). Pin 5, not cleaned at left, pickled at right. 0.5 × More
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Published: 01 June 2019
Fig. 6 Pin cracks in the fine threaded part, opened up (crack initiation designated by arrows). Pin 3, not cleaned at left, pickled at right, 1 × More
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Published: 01 June 2019
Fig. 7 Coupling cracks, opened up (crack initiation designated by arrows). Coupling 3, not cleaned at left, pickled at right. 1 × More
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Published: 01 June 2019
Fig. 8 Coupling cracks, opened up (crack initiation designated by arrows). Coupling 1, pickled. approx. 0.6 × More
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Published: 01 June 2019
Fig. 4 Fatigue crack initiation and propagation in the turbine blade sample. Arrow ‘O’ indicates initiation region and small arrows depict crack growth direction. (a) Initiation region; (b) Fatigue striations 0.1-mm from crack initiation region; (c) Crack growth bands 1-mm from crack More
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Published: 01 June 2019
Fig. 4 Detail crack initiation region in rail 5-1 suggesting merging of two cracks and mechanical damage on fracture surface. (a) 8.5×. (b) 130× More
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Published: 01 June 2019
Fig. 2 Inclusion shape near crack initiation site More
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Published: 01 June 2019
Fig. 2 Secondary crack initiation at pit-like defect in microstructure that represents an effective quench yet component cracked. More
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Published: 01 June 2019
Fig. 5 Closeup view of the crack initiation area in Fig. 4 . The dark spots are slag inclusions. 11×. More
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Published: 01 June 2019
Fig. 6 Closeup view of fracture surface in Fig. 5 , showing a crack initiation area at a sharp radius between the base metal and the filler meterial.The top half (122×) is an enlarged view of the rectangle in the bottom hen (12×). More