On the effects of unilateral boundary conditions on the crack growth rate under cycling bending loads

Giovanni Pio Pucillo (Corresponding author), Luca Esposito, Davide Leonetti

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Uittreksel

Sometimes, structural components experience service conditions that have not taken into account at the design stage. In this study, the effects of the boundary conditions on the crack propagation life have been evaluated using the modified Virtual Crack Closure Technique for a surface crack existing at the root of a shoulder fillet notch in a circular stepped bar under bending. The results show that the presence of a unilateral boundary condition at the shoulder fillet notch significantly influences the SIF's and therefore the number of cycles to failure, but the shape of the crack front does not change during propagation.

TaalEngels
Pagina's245-252
Aantal pagina's8
TijdschriftInternational Journal of Fatigue
Volume124
DOI's
StatusGepubliceerd - 1 jul 2019

Vingerafdruk

Crack Growth Rate
Notch
Cycling
Crack propagation
Boundary conditions
Crack Closure
Cracks
Crack closure
Surface Crack
Crack Propagation
Crack
Roots
Propagation
Cycle
Experience
Influence
Design
Life

Trefwoorden

    Citeer dit

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    abstract = "Sometimes, structural components experience service conditions that have not taken into account at the design stage. In this study, the effects of the boundary conditions on the crack propagation life have been evaluated using the modified Virtual Crack Closure Technique for a surface crack existing at the root of a shoulder fillet notch in a circular stepped bar under bending. The results show that the presence of a unilateral boundary condition at the shoulder fillet notch significantly influences the SIF's and therefore the number of cycles to failure, but the shape of the crack front does not change during propagation.",
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    On the effects of unilateral boundary conditions on the crack growth rate under cycling bending loads. / Pucillo, Giovanni Pio (Corresponding author); Esposito, Luca; Leonetti, Davide.

    In: International Journal of Fatigue, Vol. 124, 01.07.2019, blz. 245-252.

    Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

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    AU - Esposito,Luca

    AU - Leonetti,Davide

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    AB - Sometimes, structural components experience service conditions that have not taken into account at the design stage. In this study, the effects of the boundary conditions on the crack propagation life have been evaluated using the modified Virtual Crack Closure Technique for a surface crack existing at the root of a shoulder fillet notch in a circular stepped bar under bending. The results show that the presence of a unilateral boundary condition at the shoulder fillet notch significantly influences the SIF's and therefore the number of cycles to failure, but the shape of the crack front does not change during propagation.

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