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On the effect of the fiber orientation on the flexural stiffness of injection molded short fiber reinforced polycarbonate plates

机译：纤维取向对注塑短纤维增强聚碳酸酯板抗弯刚度的影响

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The through-thickness fiber orientation distribution of injection molded polycarbonate plates was experimentally determined by light reflection microscopy and manual digitization of polished cross sections, Fiber length distribution was determined by pyrolysis tests followed by image analysis. A statistical analysis was done to determine the confidence limits of the fiber orientation results. The fiber orientation distribution was described by using second-order orientation tensors. The through-thickness stiffness variations were determined by the orientation averaging approach. This layer stiffness distribution was used to simulate the behavior of beams subjected to three point bending with a FEM Ansys model. The results were compared with experimentally determined flexural stiffness both in the flow direction and in the transverse flow direction. The effect of flow rate and melt-temperature on stiffness and fiber orientation is discussed. [References: 31]
机译：通过光反射显微镜和手工数字化抛光横截面，实验确定了注塑聚碳酸酯板的全厚度纤维取向分布，通过热解测试和图像分析确定了纤维长度分布。进行了统计分析以确定纤维取向结果的置信度极限。通过使用二阶取向张量来描述纤维取向分布。厚度方向的刚度变化是通过方向平均法确定的。该层刚度分布用于通过FEM Ansys模型模拟经过三点弯曲的梁的行为。将结果与实验确定的在流动方向和横向流动方向上的挠曲刚度进行了比较。讨论了流速和熔体温度对刚度和纤维取向的影响。 [参考：31]

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