Comparative Analysis of Molded and Drilled Holes in Jute Fiber Reinforced Plastic Laminates

ABSTRACT

Natural Fiber Reinforced Composites (NFRCs) are an important class of materials that have the potential to facilitate the global goals of sustainability and environment protection. In order to fully realize the potential of these materials, it is important to ascertain their good quality and cost-effective manufacturing. Although the primary manufacturing techniques for fabricating the products based on NFRCs are well developed, their secondary manufacturing in terms of machining and joining still requires extensive research efforts. Drilling induced damage is the major cause of rejection of composite products with holes. In the current experimental investigation, the efficacy of producing the holes during the molding stage has been investigated. The mechanical performance of the molded holes has been compared with the drilled holes in jute fiber reinforced epoxy/polyester composite laminates, in terms of open hole, filled hole, and bearing tests. The values of the maximum tensile load recorded during the tests have been compared and it has been found that the molded holes perform better than the drilled holes for both types of materials (jute/epoxy, jute/polyester). Also, the load extension curves suggest that the molded holes undergo larger extension as compared to the drilled holes.

摘要:-

天然纤维增强复合材料 (NFRC) 是一类重要的材料, 具有促进全球可持续发展和环境保护的潜力. 为了充分发挥这些材料的潜力, 重要的是要确定其良好的质量和成本效益的制造. 尽管用于制造基于 (NFRCs) 的产品的主要制造技术已经很成熟, 但是它们在加工和连接方面的二次制造仍然需要大量的研究工作. 钻削损伤是含孔复合材料产品报废的主要原因. 在目前的实验研究中, 已经研究了在成型阶段产生孔的效率. 通过对黄麻纤维增强环氧/聚酯复合材料层合板的开孔, 补孔和承载试验, 比较了成型孔和钻孔的力学性能. 对试验期间记录的最大拉伸载荷值进行了比较, 发现对于这两种材料 (黄麻/环氧树脂, 黄麻/聚酯), 模压孔的性能优于钻孔. 此外, 载荷-延伸曲线表明, 与钻孔相比, 模压孔经历了更大的延伸

KEYWORDS:

• Molded hole
• drilled hole
• jute fiber
• plastic laminates
• composite materials
• open hole
• filled hole
• bearing

关键词:

• 成型孔
• 钻孔
• 黄麻纤维
• 塑料层压板
• 复合材料
• 裸孔
• 填充孔
• 轴承