Experimental Investigations of Failure of Sandwich Specimens with Composite Facing Layers Under Four-Point Bending Conditions

Experimental research of sandwich specimens’ failure mechanisms with facing layers from unidirectional fiber reinforced plastic with [0°] lay-up under axial compression

“…In development of the results obtained in [16,19], in this work experimental studies of the failure mechanism of sandwich specimens with outer layers made of a unidirectional CFRP E3S Web of Conferences 376, 01013 (2023) https://doi.org/10.1051/e3sconf/202337601013 ERSME-2023 under the axial compression were carried out. The main goal of the work is to identify the possibility of realizing the shear buckling mode for spesicmens with different geometric parameters, which allows to determine ultimate compressive stresses * , formed in the outer layers to be taken as a mechanical characteristic when calculating structures made of composite materials.…”

“…To verify the results of the analytical solution obtained in [17], in [19], experimental studies of sandwich specimens failure with outer layers made of CFRP based on ELUR-P unidirectional carbon tape and cold-curing binder KhT-118 were carried out. It was shown that when using a polymer paper core in sandwich specimens, the implementation of the shear buckling mode is impossible.…”