This paper presents the concept, design, fabrication, application and experimental validation of a new type of composite sandwich matting. The composite sandwich matting comprises a paulownia woods as core material and glass fiber reinforced plastic (GFRP) as face-skins and lattice-webs. The matting was fabricated by vacuum infusion moulding process (VIMP). The mechanical properties of the component materials were studied. Four-point bending tests were also performed to investigate the flexural properties of the paulownia wood core sandwich panels. The experimental results showed that the failure mode of the structures was upper facesheet compressive yielding. The structures have good integrity against transverse load, there was a large plateau region after the initial failure and can prevent the structures from catastrophic failure. The finite element (FE) analysis showed a good agreement with the experimental results in predicting the load-displacement curve. The developed composite sandwich matting has been successfully used in military engineering, emergency rescue and large infrastructure construction owing to its excellent mechanical properties.

中文翻译：

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研发出具有GFRP面板和木芯的创新型复合夹芯板

本文介绍了一种新型的复合三明治夹层的概念，设计，制造，应用和实验验证。复合材料三明治垫包括以泡桐木为芯材和玻璃纤维增​​强塑料（GFRP）为面皮和格子网的复合材料。垫是通过真空灌注成型工艺（VIMP）制成的。研究了组成材料的机械性能。还进行了四点弯曲测试，以研究泡桐木芯夹芯板的弯曲性能。实验结果表明，结构的破坏模式为上面板压缩屈服。该结构具有良好的抵抗横向载荷的完整性，初始破坏后存在较大的平台区域，可以防止结构发生灾难性破坏。有限元（FE）分析与预测载荷-位移曲线的实验结果显示出良好的一致性。由于其优异的机械性能，开发的复合夹芯板垫已成功用于军事工程，紧急救援和大型基础设施建设。