Impact resistance and damage mechanisms of CFRP/foam/aluminum sandwich structures under impact loading by fragments

Fu Liu, Yuandi Li, Xinyi Wang, Jiulian Wang, Xiong Pan, Xiaocheng Li, Xulong Xi, School of Intelligent Manufacturing and Control Engineering, Shanghai Polytechnic University, Aircraft Structure and Stress Division, Shanghai Aircraft Design and Research Institute, College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, National Key Laboratory of Strength and Structural Integrity, Aircraft Strength Research Institute of China

Journal of Sandwich Structures & Materials

Published online on December 20, 2025

Abstract

Journal of Sandwich Structures & Materials, Ahead of Print.
To enhance the impact resistance of composite sandwich structures subjected to high-velocity fragment impacts, a thin aluminum alloy plate was embedded into a conventional carbon fiber reinforced polymer (CFRP)/foam sandwich. Seven CFRP/foam/aluminum (CFA)...