Issue 73

A. Masmoudi et alii, Fracture and Structural Integrity, 73 (2025) 41-58; DOI: 10.3221/IGF-ESIS.73.04

GFRP skin and both flatwise and edgewise compression tests the bottom plate was fixed and the load was applied using the top plate.

Figure 2: Geometry of GFRP skin samples used for characterization a) compressive test. b) tensile test, dimensions are in mm.

Figure 3: Compression test fixture for GFRP skin.

Scanning electron microscopy The purpose of this study was to understand the failure mode and assess the efficiency of the fiber-matrix and skin-core bonding in samples. To achieve this, a microscopic examination was conducted using the Scanning Electron Microscopy technique at the Scientific and Technical Research Center in Physical-Chemical Analysis located in Biskra, Algeria. Digital image correlation DIC is an optical, full-field measurement technique that it based on computer vision. It is used in engineering and materials science to analyze the deformation and movement of objects or materials by tracking patterns or markers on their surfaces using digital image processing. DIC is widely used in areas such as structural mechanics and materials testing, to provide information on the behavior of materials and structures under different conditions. The methodology involves acquiring digital images of a surface at different stages of deformation, the analysis and comparison of these images to determine the movement of surface points, and finally the calculation of deformation maps [22]. The analysis of DIC and the subsequent

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