ABSTRACT

The drilling of natural fiber-reinforced polymer composites (NFRCs) and their hybrid composites is a critical machining operation, which becomes vital to facilitate parts assembly. The quality of the drill hole is crucial for advanced applications due to strict dimension tolerance. The NFRCs have been studied rapidly for recent years because of their comparable specific properties, secure and safe handling, eco-friendly, and accessibility compared to synthetic fiber-based composites. This paper presents a review of past and present research studies of the drilling behavior of NFRCs and their hybrid. Firstly, it investigates various drilling techniques used for NFRCs. Then, an overview of the various drilling parameters and keys aspects of drilling performance parameters are presented to provide the space to narrate the development of ideas and our current understanding of this research field. After that, a study on drill bit geometry and materials, and residual strength is analyzed. Consequently, the method of improving the drilling properties for natural fiber-reinforced polymer composite and their hybrid, the challenges, and recommendations for researchers are highlighted. Results showed that the drilling performance could be enhanced by chemical treatment of natural fiber and using the special drill bit besides determining the optimized drilling performance parameters.

摘要

天然纤维增强聚合物复合材料 (NFRC) 及其混合复合材料的钻孔是一项关键的机械加工操作，这对于促进零件组装至关重要。由于严格的尺寸公差，钻孔的质量对于高级应用至关重要。近年来，由于与合成纤维基复合材料相比，NFRCs 具有可比的特定性能、安全和安全的处理、环保和可访问性，NFRCs 得到了快速研究。本文回顾了过去和现在对 NFRC 及其混合材料的钻孔行为的研究。首先，它研究了用于 NFRC 的各种钻井技术。然后，概述了各种钻井参数和钻井性能参数的关键方面，以提供空间来叙述想法的发展和我们目前对该研究领域的理解。之后，对钻头几何形状和材料以及剩余强度进行了分析。因此，重点介绍了提高天然纤维增强聚合物复合材料及其混合物的钻孔性能的方法、挑战以及对研究人员的建议。结果表明，除了确定优化的钻井性能参数外，通过对天然纤维进行化学处理和使用专用钻头，可以提高钻井性能。因此，重点介绍了提高天然纤维增强聚合物复合材料及其混合物的钻孔性能的方法、挑战以及对研究人员的建议。结果表明，除了确定优化的钻井性能参数外，通过对天然纤维进行化学处理和使用专用钻头，可以提高钻井性能。因此，重点介绍了提高天然纤维增强聚合物复合材料及其混合物的钻孔性能的方法、挑战以及对研究人员的建议。结果表明，除了确定优化的钻井性能参数外，通过对天然纤维进行化学处理和使用专用钻头，可以提高钻井性能。