Flexural Behaviour of Foam Cored Sandwich Structures with Through-Thickness Reinforcements

Composite sandwich structures are well-suited for applications requiring high bending strength, flexural rigidity, crashworthiness, and light weight. However, skin–core debonding core failure remain a barrier to optimal structural performance when polymeric foams used as materials. Suppressing or compartmentalising these modes can enhance the integrity of structures. In this paper, response structure was improved by adding carbon fibre-reinforced plastic in form through-thickness ribs during manufacturing process. The effect position investigated using quasi-static three-point bend test. A camera capture events, while digital image correlation technique provided full-strain field at different stages loading. Improved obtained reinforcement placed on either side loading roller. With configuration, restricted confined portion panel, resulting more localised stable fracture process, which involved enhanced foam crushing hardening. simple FEA approach has been adopted paper proven be an effective capturing details including composite structures, without need complex computationally expensive interface modelling.