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Flexural testing of cellulose fiber braided composites using three dimensional digital image correlation

机译：三维数字图像关联对纤维素纤维编织复合材料的弯曲测试

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摘要

Braided composites consist of woven fibers embedded within a matrix material. Braided structures are commonly produced using conventional materials such as carbon, glass and aramid fibers. However, natural fibers and bio-based resins may also be utilized with this manufacturing process. In this work, the flexural properties of tubular braid structures produced using bio-based materials was investigated. Braid samples were assessed using a contact free three dimensional digital image correlation (3D DIC) technique to assess the strain fields that occur in the samples due to applied flexural loads. Additionally, the bio-based structures were evaluated using micro-computed tomography (mu CT) to assess the cross-sectional geometry and void content of the produced samples.
机译：编织复合材料由嵌入基质材料中的编织纤维组成。编织结构通常使用诸如碳，玻璃和芳族聚酰胺纤维的常规材料生产。然而，天然纤维和生物基树脂也可以在该制造过程中使用。在这项工作中，研究了使用生物基材料生产的管状编织结构的挠曲特性。使用无接触三维数字图像相关性（3D DIC）技术评估编织样品，以评估由于施加弯曲载荷而在样品中出现的应变场。此外，使用微计算机断层扫描（mu CT）对生物基结构进行了评估，以评估所生产样品的横截面几何形状和空隙含量。

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