In this study, the effect of fiber angle on the tensile load-bearing performance and damage failure characteristics of glass composite laminates was investigated experimentally, analytically, and numerically. The glass fabric in the laminate was perfectly aligned along the load direction (i.e., at 0°), offset at angles of 30° and 45°, or mixed in different directions (i.e., 0°/30° or 0°/45°). The composite laminates were fabricated using vacuum-assisted resin molding. The influence of fiber orientation angle on the mechanical properties and stiffness degradation of the laminates was studied via cyclic tensile strength tests. Furthermore, simulations have been conducted using finite element analysis and analytical approaches to evaluate the influence of fiber orientation on the mechanical performance of glass laminates. Experimental testing revealed that, although the composite laminates laid along the 0° direction exhibited the highest stiffness and strength, their structural performance deteriorated rapidly. We also determined that increasing the fiber offset angle (i.e., 30°) could optimize the mechanical properties and damage failure characteristics of glass laminates. The results of the numerical and analytical approaches demonstrated their ability to capture the mechanical behavior and damage failure modes of composite laminates with different fiber orientations, which may be used to prevent the catastrophic failures that occur in composite laminates.

在本研究中，通过实验、分析和数值研究了纤维角度对玻璃复合材料层压板拉伸承载性能和损伤失效特性的影响。层压板中的玻璃纤维沿负载方向（即 0°）完美对齐，以 30° 和 45° 的角度偏移，或以不同方向混合（即 0°/30° 或 0°/45°） ）。复合材料层压板采用真空辅助树脂成型法制造。通过循环拉伸强度试验研究了纤维取向角对层压板力学性能和刚度退化的影响。此外，还使用有限元分析和分析方法进行了模拟，以评估纤维取向对玻璃层压板机械性能的影响。实验测试表明，虽然沿0°方向铺设的复合材料层合板表现出最高的刚度和强度，但其结构性能迅速恶化。我们还确定，增加纤维偏置角（即 30°）可以优化玻璃层压板的机械性能和损坏失效特性。数值和分析方法的结果表明，它们能够捕获具有不同纤维取向的复合材料层压板的机械行为和损伤失效模式，这可用于防止复合材料层压板中发生的灾难性失效。