Effect of Machining Parameters on Milled Natural Fiber-Reinforced Plastic Composites

Abstract

Natural fiber-reinforced composites are recognized as better materials for structural components due to their inherent properties. However, milling these materials presents a number of problems, such as surface delamination and surface roughness (Ra), which appear during the machining process, associated with the characteristics of the material and the cutting parameters. In order to reduce these problems we present this study with the objective of evaluating the cutting parameters (cutting velocity and feed rate) and the influence of the fibers under delamination factor (Fd) and surface roughness (Ra). An experimental plan, based on Taguchi techniques and on the analysis of variance (ANOVA), was established considering milling with prefixed cutting parameters in Natural Fiber-Reinforced Plastic (NFRP) composite materials using cemented carbide end mill. The results of NFRP composite were compared with Glass Fiber-Reinforced Plastic (GFRP) composites. The objective was to establish a model using multiple regression analysis between cutting velocity and feed rate with the delamination factor (Fd) and surface roughness (Ra) of different fiberreinforced laminates.

Fiber type effect on tribological behavior when cutting natural fiber reinforced plastics

“…The NFRP generate less cutting forces than GFRP during machining, but have more delamination induced-cutting damage with rough cut surfaces. Moreover, the local properties of fiber influence significantly the cutting behavior of NFRP in terms of delamination factor and surface roughness levels [19]. This is a sign that NFRP machining is very closely related to the fiber cutting.…”

“…Previous works has been invested particularly in the drilling and milling operations in order to identify the overall variability behavior of NFRP during machining process in terms of surface roughness, cutting forces and delamination factor using statistical analysis of variance. These studies [17][18][19][20][21][22][23][24][25][26] show that the cutting feed rate has larger effect on the cutting forces, delamination factor and surface roughness, followed by the tool diameter for drilling process and depth of cut in the case of milling operation. The cutting speed has the lowest contribution on the modification of the cut surface state.…”

Experimental study of coated tools effects in dry cutting of natural fiber reinforced plastics

“…The main outcome of these studies is that the feed rate has the larger contribution to the machining response [18][19][20][21][22][23][24][25][26][27]. Indeed, cutting forces, delamination factor and global surface roughness increase by feed rate increasing.…”

Characterization of Natural Fiber Reinforced Composites-Bamboo and Sisal: A Review

“…coupled with the characteristics of the material and cutting parameters. In a research work, the researchers have evaluated the cutting parameters (cutting velocity and feed rate) in milling and the influence of the fibers under delamination factor and surface roughness [75]. In this study, the Taguchi and ANOVA analysis were performed to optimize the cutting parameters.…”