Determination of Milling Performance of Jute and Flax Fiber Reinforced Composites

ABSTRACT

The usage area of natural fiber reinforced composite materials has been increasing day by day, due to their attaining to not only ecological benefits but also high mechanical properties with their low weight. After the fabrication of natural fiber reinforced composites, they need to be subjected to secondary processes such as milling, drilling and turning processes according to their field of use. In this study, it was aimed to determine milling performance of JFRP and FFRP composites, which are obtained from natural fibers. Experiments were carried out at the different processing parameters. The effects of these parameters on cutting force, vibration amplitude, delamination factor, and surface roughness were investigated. Vibration amplitude and delamination factor increased, and cutting force and surface roughness decreased with increasing spindle speed. Cutting force, vibration amplitude, delamination factor and surface roughness increased with increasing feed rate. The most appropriate values for cutting force, delamination factor and surface roughness were obtained in experiments where WC end mill was used. However, in vibration amplitude, the lowest values were HSS end mill. Delamination factors and surface roughness in FFRP composites were higher than those of JFRP composites. Cutting forces of FFRP composites were lower than those of JFRP composites.

摘要

摘要天然纤维增强复合材料不仅具有良好的生态效益，而且具有较高的力学性能和较低的重量，其使用面积日益增加. 天然纤维增强复合材料在制备完成后，需要根据其使用领域进行二次加工，如铣削、钻孔和车削. 本研究旨在确定JFRP和FFRP复合材料的铣削性能，这两种材料均来自天然纤维. 在不同的加工参数下进行了实验. 研究了这些参数对切削力、振动幅值、分层因子和表面粗糙度的影响. 振动幅值和分层系数增大，切削力和表面粗糙度随主轴转速的增大而减小. 切削力、振动幅值、分层系数和表面粗糙度随进给量的增加而增大. 在采用WC型立铣刀的试验中，获得了最合适的切削力、分层系数和表面粗糙度值. 而在振动幅值方面，HSS端铣刀的振动幅值最低. FFRP复合材料的分层系数和表面粗糙度均高于JFRP复合材料. FFRP复合材料的切削力低于JFRP复合材料.

KEYWORDS:

• Cutting force
• delamination
• natural fiber composites
• surface roughness
• vibration

关键词:

• 切削力
• 分层
• 天然纤维复合材料
• 表面粗糙度
• 振动