Compressive and Interlaminar Shear Strength Properties of Biaxial Fibreglass Laminates Hybridized with Jute Fibre Produced by Vacuum Infusion

ABSTRACT

In this work, compressive and interlaminar shear properties of hybrid laminates were evaluated in order to fulfill the gap regarding the analysis of these mechanical properties and their importance for hybrid composites with natural fiber. Laminates of epoxy and jute fabric with non-woven glass fabrics were manufactured by vacuum infusion. Three hybrid laminates were produced with different orientation of their layers. Fiber weight fraction was 60% and density was 20% lower than glass fiber-reinforced composites. The hybrid laminates with jute fabric showed lower compressive and interlaminar shear strength compared to the glass fiber laminates, and the best compressive strength result was presented by the hybrid laminate with layers oriented 0/90°. The fractures of laminates were evaluated by an optical microscope. In the hybridized laminates, mainly in short beam testing, the failures occurred between jute layers whereas in compression failures were identified in the bordering surface of the glass and jute layer and in some regions with excess of resin. These results suggest that the hybrid laminates configurations developed and analyzed in this work can be successfully applied to mold components in composites, arising as an environmentally friendly option to the glass fiber-reinforced composites.

抽象

在这项工作中，对混合层压板的压缩和层间剪切特性进行了评估，以满足这些机械特性分析方面的空白，以及它们对天然纤维混合复合材料的重要性. 无纺布环氧和黄麻织物层压层采用真空注入制成. 生产了三种混合层压板，其层位不同. 纤维重量部分为60%，密度比玻璃纤维增强复合材料低20%. 与玻璃纤维层压板相比，黄麻织物的混合层压板具有较低的压缩和层间剪切强度，而带层状0/90°的混合层压板具有最佳的抗压强度. 用光学显微镜对层压板的断裂进行了评价. 在杂交层压板中，主要是在短梁测试中，黄麻层之间发生故障，而压缩失效则在玻璃和黄麻层的边框表面以及树脂过剩的一些地区被识别. 这些结果表明，在这项工作中开发和分析的混合层压板配置可以成功地应用于复合材料中的模具组件，作为玻璃纤维增强复合材料的环保选择.

KEYWORDS:

• Hybrid laminate
• compressive
• interlaminar shear strength
• hybrid composite
• mechanical properties

关键词:

• 混合层压板
• 压缩
• 间层剪切强度
• 混合复合材料
• 机械性能

Acknowledgments

The authors would like to thank the Graduate Program in MaterialsScience (PPGCM) of the Federal University of São Carlos (UFSCar)Sorocaba Campus; the São Paulo Research Foundation (FAPESP) [grant06/60885-2], the Coordenação de Aperfeiçoamento de Pessoal de NívelSuperior – Brasil (CAPES) – Finance Code 001 [88887.464432/2019-00] andTecSis S.A. Company.

Additional information

Funding

This work was supported by the São Paulo Research Foundation (FAPESP) [grant 06/60885-2]. This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior – Brasil (CAPES) – Finance Code 001.