Issue 73

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

Experimental investigation on mechanical behavior of sandwich structures using Digital Image Correlation (DIC)

Amina Masmoudi, Abdelhak Khechai, Ahmed Bouaziz Laboratory of Research in Civil Engineering, Mohamed Khider University of Biskra, Algeria. amina.masmoudi@univ-biskra.dz , https://orcid.org/0009-0003-3212-7743 a.khechai@univ-biskra.dz , ahmed.bouaziz@univ-biskra.dz Guerira Belhi Mechanical Engineering Laboratory, University of Biskra, Algeria. b.guerira@univ-biskra.dz Afaf Zeroual, Yassine Adimi Laboratory of Research in Civil Engineering, Mohamed Khider University of Biskra, Algeria. Afaf.zeroual@univ-biskra.dz , yassine.adimi@univ-biskra.dz

Citation: Masmoudi, A., Khechai, A., Bouaziz, A., belhi, G., Zeroual, A., Adimi, Y., Experimental investigation on mechanical behavior of sandwich structures using Digital Image Correlation (DIC), Fracture and Structural Integrity, 73 (2025) 41-58.

Received: 25.02.2025 Accepted: 10.04.2025 Published: 13.04.2025 Issue: 07.2025

Copyright: © 2025 This is an open access article under the terms of the CC-BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

K EYWORDS . Sandwich structure, PU, GFRP, Behavior, DIC.

I NTRODUCTION andwich structures are extensively used as structural materials across diverse industries, including civil structure and construction. This increased use is due to their remarkable strength-to-weight ratio, corrosion resistance, and durability. The design of sandwich structures, with thin, strong skins and a thick lightweight core, provides stiffness in compressive, tensile, bending, and buckling loadings [1]. The incorporation of fiber-reinforced polymers (FRP) as skins S

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