Study of the Shielding Interactions between Double Cracks on Crack Growth Behaviors under Fatigue Loading

Han, Zhichao; Qian, Chen; Li, Huifang

doi:10.3390/met10020202

Cited by 9 publications

(3 citation statements)

References 32 publications

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“…It should be noted that this shielding effect was found to be in an inverse relationship with the horizontal separation distance, as the separation distance increases the interaction impact is reduced. This interaction influence for double parallel cracks found to be similar to that of parallel cracks found in plates (Han, Qian, and Li 2020) and in solid cylinders (Awang et al 2017), where both studies explored the interaction influence of parallel cracks. However, in order to quantify this rate of interaction between the cracks, the interaction factor (Ѱ) is determined for this purpose in the next section.…”

Section: Sifs Distributionsupporting

confidence: 67%

Interaction of double parallel cracks located on a hollow cylinder

Al-Moayed,

Ismail,

Kareem

et al. 2023

Lat. Am. j. solids struct.

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Due to the extensive usage in the industry, the structural integrity of hollow cylinders is seen as a critical goal for stakeholders. Fracture is the most common failure mode for cylinders, which occurs due to crack propagation. Cracks can be found in single or multiple forms; when numerous, crack interaction occurs, which can exacerbate pressures beyond the material's resistance. This work uses Ansys software to examine double parallel interacting surface cracks on a hollow cylinder. The stress intensity factor (SIF) was used to describe the driving force that was used to characterize crack interaction for various crack geometries. To conduct extensive research, this study evaluated a wide range of crack aspect ratios as well as the relative depth of the crack. The findings of this study indicated that the shielding effect demonstrated parallel crack interaction. In addition, an empirical mathematical approach for predicting SIFs for double parallel cracks via single crack SIFs has been developed. The validation of the proposed model using performance evaluation metrics revealed an acceptable rate of error of less than 5%.

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Section: Sifs Distributionsupporting

confidence: 67%

Interaction of double parallel cracks located on a hollow cylinder

Al-Moayed,

Ismail,

Kareem

et al. 2023

Lat. Am. j. solids struct.

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show abstract

“…In addition, Han et al found that when double cracks are located on the bisector, shielding interaction will occur, which will reduce the stress intensity factor and crack growth rate at the crack tip. 70 However, thus far, there are still disputes about the physical mechanism of the formation of repulsion regions in EP cracks.…”

Section: Crack Patterns By In-plane Stressmentioning

confidence: 99%

Recent progress on crack pattern formation in thin films

Liu

Shan-xin

et al. 2022

Soft Matter

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“…However, numerical methods have proven to be a practical approach to solving this problem. Another vital issue for multiple edge crack problems is the interaction between the cracks [26][27][28][29]. Han et al [30] investigated experimentally and numerically the interaction between two parallel cracks.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of the mechanical and electrical properties of (RE)BCO tapes with multiple edge cracks

Gao

2023

Supercond. Sci. Technol.

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One of the leading causes of critical current degradation in (RE)BCO tapes is the micro-cracks produced by mechanical slitting. These cracks are scattered near the edge of the tape and vary in length and angle. In this work, a tape model with multiple edge cracks is established. Under tensile loading, the effects of the Poisson ratio, crack length, crack angle, crack spacing, and geometric mutation between cracks on the stress intensity factor are investigated using the extended finite element method (XFEM). Tensile experiments were conducted at room temperature to investigate the crack propagation behavior of tapes with multiple edge cracks. The results show that the stress intensity factor obtained using XFEM is more informative than the analytical solution, which ignores the Poisson effect. The stress intensity factor is sensitive to crack length and angle variations and exhibits an evident jump characteristic when a geometric mutation occurs. The jump level strongly depends on the geometric difference. The jump location is the initiation site for crack propagation, which is consistent with the experiment results. The strain analysis of the tape implies that high-strain regions exist at the crack tip before the tensile strain reaches the irreversible strain limit. The critical strain of crack propagation is closely related to the form of crack distribution. It dominates the irreversible strain limit of critical current degradation, which facilitates understanding the early degradation of critical current. Finally, some engineering suggestions are given.

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Study of the Shielding Interactions between Double Cracks on Crack Growth Behaviors under Fatigue Loading

Cited by 9 publications

References 32 publications

Interaction of double parallel cracks located on a hollow cylinder

Interaction of double parallel cracks located on a hollow cylinder

Recent progress on crack pattern formation in thin films

Numerical analysis of the mechanical and electrical properties of (RE)BCO tapes with multiple edge cracks

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