Surface crack and fatigue analysis for cylindrical shaft

S., Suman; Dwivedi, Rinky

doi:10.1016/j.matpr.2021.05.161

Cited by 3 publications

(2 citation statements)

References 14 publications

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“…Over time, when the shaft reaches fracture, the propagation of cracks could be observed, leading to permanent fracture [12]. Thus, the study of the SIF of shafts is essential to understand the fatigue life of the shafts [13], which could also indicate their life span [14]. The study of metal fatigue revolves around fracture mechanics under the Linear Elastic Fracture Mechanics concept [15].…”

Section: Introductionmentioning

confidence: 99%

Fatigue Analysis of a Cracked Shaft: a Finite Element Modeling Approach

Thinesshwaran,

Husnain,

Akramin

et al. 2024

J. Phys.: Conf. Ser.

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Shafts are typically used in sophisticated mechanisms and machinery which highly depend on shafts for rotatory motion which could lead to the failure. In today’s contemporary, damages caused by cracking on mechanical components and structures have increased, causing crack and structural failure. The failure could be examined by the calculation of stress intensity factor (SIF). Once the shaft reaches the critical SIF (SIFIC), the flaw is initiated and has a potential to propagate upon loading. Typically, the flaw would spread in many patterns and tenders to the formation and initiation of different types of cracks. Thus, the objective of this research work is to analyse fatigue cracked shafts. Prediction of crack growth via SIF calculation. SIF is usually adapted to predict the stress intensity near the crack tip where crack propagation occurs. Thus, SIF is used to study and analyse the cracked surface in relation to crack initiation and propagation. The SIF is calculated through finite element method (FEM) since the FEM is capable simulating complex geometry. The SIF is calculated based on the deformation in FEM calculation. The results show the predicted crack propagation and SIF calculation. It is crucial to study the resistance of cracked shafts towards cyclic loading for maintenance preceding and retirement of the structure.

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Section: Introductionmentioning

confidence: 99%

Fatigue Analysis of a Cracked Shaft: a Finite Element Modeling Approach

Thinesshwaran,

Husnain,

Akramin

et al. 2024

J. Phys.: Conf. Ser.

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“…Accordingly, the axial stress can also affect the crack propagation behavior of materials under cyclic torsional load. Because the fatigue growth analysis of surface cracks is crucial for the safe assessment of a structural component (Suman and Dwivedi, 2021;Huang et al, 2022;Kujawski et al, 2022;Sun et al, 2022;Field et al, 2023;Houjou et al, 2023), it is very important to explore the influence of mean tensile/compressive stress on the propagation behavior of surface cracks formed during torsional fatigue.…”

Section: Introductionmentioning

confidence: 99%

Crack bifurcation behavior of coarse-grained copper under cyclic torsion combined with axial static loading

Yue Liu,

Hua Li,

Chen

2023

Rev. metal.

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Because the growth behaviors of fatigue cracks are crucial for the safe assessment of structural components, the crack propagation behaviors of coarse-grained copper (CG Cu) subjected to cyclic torsion combined with different axial static stresses were studied. The crack bifurcation behavior is related to the strain amplitude applied. When the strain amplitude is lower, both the type and the magnitude of axial stress have no significant effect on the direction in which the primary crack branches, which is mainly determined by the position of the maximum normal plane. However, when the strain amplitude is higher, the bifurcated crack deviates visibly from the maximum normal plane, which can be attributed to the high degree of plastic deformation and microcracks caused by slip bands along longitudinal direction.

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