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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. 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 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 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
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Published: 01 June 2019
Fig. 2 Inclusion shape near crack initiation site 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: 30 August 2021
Fig. 115 Fracture surface opened. Black arrows correspond to crack-initiation sites on the mating fracture surfaces More
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Published: 30 August 2021
Fig. 1 Schematic showing the relationship between crack initiation and propagation (preceding failure) as the number of cycles increases. Adapted from Ref 3 More
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Published: 30 August 2021
Fig. 96 (a) Metallographic cross section of failed weld showing crack-initiation location on the inside diameter (ID) of shell course 1. Note multiple weld passes. OD, outside diameter. (b) Detail of heat-affected zone microstructure next to crack revealing the presence of martensite. Etched More
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Published: 01 June 2019
Fig. 3 (a) Shroud plate fracture surface illustrating crack initiation from the defect and subsequent fatigue fracture. (b) Left hand side of the fracture surface shown in Fig. 3(a) sectioned through the defect origin and subsequently cut into three sections to facilitate SEM study. Note More
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Published: 15 January 2021
Fig. 9 Schematic diagrams illustrating common crack-initiation sites for stress-corrosion cracking (SCC). Adapted from Ref 16 More
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Published: 15 January 2021
Fig. 3 Crack initiation and propagation at a microjunction. Adapted from Ref 16 More