Experimental evaluation of J-integral in elastic and elastic–plastic polymers by means of digital image correlation and higher-order eigenfields under mode-I

Shivaie Kojouri, Ali; Khosravi Rikaee, Haniyeh; Kalteremidou, Kalliopi-Artemi; Van Hemelrijck, Danny

doi:10.1016/j.engfracmech.2023.109534

Cited by 8 publications

(1 citation statement)

References 42 publications

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“…There are various techniques in the experimental stress analysis eld for fracture properties determination, namely photoelasticity [15], strain gauge [16, 17], digital shearography [18], and so on. However, the DIC is one experimental stress analysis method that is conventionally applied in the eld of fracture mechanics [19,20]. The method is based on the imaging from the specimen surface before and after deformation.…”

Section: Experimental Validationmentioning

confidence: 99%

Stress Intensity Factor and T-stress in Lip-shaped Cracks in finite and infinite plates

Moradi,

Hosseini,

Yaghobifar

et al. 2024

Preprint

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Lip-shaped holes are conventionally seen in industrial sheet structures. Due to the notch-type cusp in these holes, the stress intensity around the cusp is the main reason for failure. Hence, the stress intensity factor investigation is crucially important in these holes. The current study focuses on the stress intensity factor around lip-shaped holes in finite and infinite sheets using numerical and experimental methods. In the first step, the stress intensities around a lip-shaped hole with various geometry in infinite sheets were numerically determined by the ANSYS software. Then, focusing on the finite sheet, the effect of sheet size and hole geometry on the stress intensity factor were investigated in finite sheets. Results were in great agreement with the analytical solutions proposed in the literature. In this section, the T-stress parameter was also determined in all cases. The T-stress in most cases considerable, meaning that this parameter must be taken into account in industrial design and assessments. In the second step, the digital image correlation technique was employed for validation. Three specimens with various hole geometries were tested, and the validation was successfully done.

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Section: Experimental Validationmentioning

confidence: 99%