In virtue of the performance of natural fiber reinforced composites, hybridization and stacking order play a crucial role in defining the behavior of engineering components. Furthermore, no studies have been reported on the mechanical and water absorption properties of woven flax/bamboo hybrid composites with different stackings. The present study investigates the influence of stacking sequences and hybridization of flax (F)/bamboo (B) epoxy composites on its mechanical and water absorption properties. The stacking sequence is varied as follows: B/F/F/B, F/B/B/F, F/B/F/B, F/F/B/B. A numerical model for interlaminar shear strength (ILSS) is developed and validated using ANSYS composite repost, which can predict the critical stresses and damage in each ply, as it is not possible through experimental studies. The tensile fractured surfaces are examined by scanning electron microscopy. Results indicate that the mechanical and water absorption of hybrid composite laminates are influenced by the stacking sequence. The optimum stacking order with maximum performance is obtained for B/F/F/B. The increase in tensile, flexural, impact, and ILSS values is observed as 8.3%, 25%, 4.4%, and 14.6%, respectively. The water diffusion coefficient is reduced by 34.75% by the addition of the bamboo layer to the skin. The computational analysis predicted the different modes of critical stresses and failures acting on each ply during the ILSS test.

中文翻译：

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堆叠顺序和杂化对机织亚麻/竹复合材料力学和吸水性能影响的研究

凭借天然纤维增强复合材料的性能，杂化和堆叠顺序在定义工程部件的行为方面起着至关重要的作用。此外，还没有关于具有不同堆叠的编织亚麻/竹混合复合材料的机械和吸水性能的研究报道。本研究调查了亚麻（F）/竹（B）环氧树脂复合材料的堆叠顺序和杂化对其机械和吸水性能的影响。堆叠顺序变化如下：B/F/F/B、F/B/B/F、F/B/F/B、F/F/B/B。使用 ANSYS 复合材料 repost 开发和验证了层间剪切强度 (ILSS) 的数值模型，该模型可以预测每层的临界应力和损伤，因为通过实验研究是不可能的。通过扫描电子显微镜检查拉伸断裂表面。结果表明，混合复合材料层压板的机械和吸水率受堆叠顺序的影响。对于 B/F/F/B，获得了具有最大性能的最佳堆叠顺序。观察到拉伸、弯曲、冲击和 ILSS 值的增加分别为 8.3%、25%、4.4% 和 14.6%。通过在皮肤上添加竹层，水扩散系数降低了 34.75%。计算分析预测了 ILSS 测试期间作用于每层的临界应力和失效的不同模式。对于 B/F/F/B，获得了具有最大性能的最佳堆叠顺序。观察到拉伸、弯曲、冲击和 ILSS 值的增加分别为 8.3%、25%、4.4% 和 14.6%。通过在皮肤上添加竹层，水扩散系数降低了 34.75%。计算分析预测了 ILSS 测试期间作用于每层的临界应力和失效的不同模式。对于 B/F/F/B，获得了具有最大性能的最佳堆叠顺序。观察到拉伸、弯曲、冲击和 ILSS 值的增加分别为 8.3%、25%、4.4% 和 14.6%。通过在皮肤上添加竹层，水扩散系数降低了 34.75%。计算分析预测了 ILSS 测试期间作用于每层的临界应力和失效的不同模式。