Case Study of Supporting Tubes Failure

Zeravcic, Vera Sijacki; Djukic, Milos B.; Bakić, Gordana; Andjelic, Biljana; Rajičić, Bratislav

doi:10.1007/1-4020-4972-2_536

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“…These geometrical details when subjected to cyclic loading are susceptible to fatigue crack initiation which can culminate in fatigue failure. Fracture mechanics and fractography are two branches of modern engineering currently used to investigate the mechanical behaviour of structural elements during and after fatigue failure, respectively (Zeravcic et al 2006;Macek et al 2017Macek et al , 2020bBranco et al 2020;Kowal and Szala 2020). One of the methods of fracture-surface topography analysis is FRASTA, developed by SRI International (Kobayashi and Shockey 2010) and further improved by (Cao et al 2014;Martelo et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Fracture surface formation of notched 2017A-T4 aluminium alloy under bending fatigue

Macek

2021

Int J Fract

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The effect of cyclic loading on facture surface topology in notched components made by aluminium alloys is not completely clear. Fractography and fracture mechanics can help to understand this interdependency. This paper aims to study the distribution of the fracture surface roughness of notched 2017A-T4 aluminium alloy after bending fatigue using an optical focus-variation surface measurement technique by applying the fracture zone concept. The effects of stress level at the notch root and the load ratio on fatigue crack growth and fracture surfaces are analysed. Profile and areal surface parameters of four fracture surface regions were investigated at incremental crack lengths of the specimens. Studies have confirmed that the surface areas associated with the main stages of fatigue phenomenon (i.e. crack initiation, crack propagation, and final rupture) have significant differences in roughness which can be explained by the different loading scenarios. Overall, fatigue fracture surfaces have smallest roughness values at the crack initiation stage and a gradual increase during the fatigue crack growth stage.

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Section: Introductionmentioning

confidence: 99%

Fracture surface formation of notched 2017A-T4 aluminium alloy under bending fatigue

Macek

2021

Int J Fract

View full text Add to dashboard Cite

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Case Study of Supporting Tubes Failure

Cited by 1 publication

References 0 publications

Fracture surface formation of notched 2017A-T4 aluminium alloy under bending fatigue

Fracture surface formation of notched 2017A-T4 aluminium alloy under bending fatigue

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