Mode I and II interlaminar fracture toughness of glass/carbon inter-ply hybrid FRP composites: Effects of stacking sequence and testing temperature,Polymer Composites

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Mode I and II interlaminar fracture toughness of glass/carbon inter-ply hybrid FRP composites: Effects of stacking sequence and testing temperature
Polymer Composites ( IF 4.8 ) Pub Date : 2023-04-21 , DOI: 10.1002/pc.27349
Srinivasu Dasari _{1,

2} , Satyaroop Patnaik ₁ , Tanmay Bhattacharyya ₃ , Subrata Mukherjee ₄ , Bankim Chandra Ray ₁ , Rajesh Kumar Prusty ₁

Affiliation

Even though laminated FRP composites show exceptional performance in various modes of loading, they are susceptible to delamination. The ambient temperature and elevated temperature delamination resistance of glass/carbon fiber interply hybrid composites were assessed via mode I and mode II interlaminar fracture toughness tests performed at 30, 50 and 70°C. Interply hybrid composites performed better than composites with single type of fiber. The fracture toughness of inter-ply hybrid composites varied with the stacking position. At 30°C, mode I fracture toughness value of alternative glass and carbon fiber stacking sequence (G₁C₁)₅ of hybrid composite showed 40% improvement over 10 layered carbon/epoxy (C₁₀) composite. Further, Mode II fracture toughness of C₅G₅ composite showed 22% enhancement, and C₁₀ exhibited 42% improvement over 10-layered glass/epoxy composite. Increasing the test temperature of all composites improved their G_IC and G_IIC values. The increment in the mode I fracture toughness properties of all composite was in the range of 5%–23% at 70°C from its room temperature value. The fractographic images of fractured samples were studied under a scanning electron microscope and failure mechanisms of composites were identified.

中文翻译：

玻璃/碳夹层杂化 FRP 复合材料的模式 I 和 II 层间断裂韧性：堆叠顺序和测试温度的影响

尽管层压 FRP 复合材料在各种加载模式下表现出卓越的性能，但它们容易分层。通过在 30、50 和 70°C 下进行的模式 I 和模式 II 层间断裂韧性测试，评估了玻璃/碳纤维层间混合复合材料的环境温度和高温抗分层性。Interply 混合复合材料的性能优于单一类型纤维的复合材料。层间杂化复合材料的断裂韧性随堆叠位置而变化。在 30°C 时，混合复合材料的替代玻璃和碳纤维堆叠序列 (G ₁ C ₁ ) ₅的模式 I 断裂韧性值比 10 层状碳/环氧树脂 (C ₁₀）合成的。_{此外，C 5} G ₅复合材料的 II 型断裂韧性表现出 22% 的增强，而 C ₁₀表现出比 10 层玻璃/环氧树脂复合材料提高 42% 的效果。提高所有复合材料的测试温度可改善其 G _IC和 G _IIC值。在 70°C 时，所有复合材料的模式 I 断裂韧性特性的增量都在其室温值的 5%–23% 范围内。在扫描电子显微镜下研究了断裂样品的断口图像，并确定了复合材料的失效机制。

更新日期：2023-04-21

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