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

Abstract

is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. AbstractRecently, natural fiber reinforced plastic (NFRP) materials are becoming a viable alternative to synthetic fiber in many industrial applications which not require high structural performances. However, machining of NFRP such as milling process is almost unavoidable operation to facilitate the parts assembly in addition to the finishing of final products. The present study thus focused on the influence of natural fiber types on tribological behavior during profile milling process. Three types of short natural fibers (bamboo, sisal and miscanthus) reinforced polypropylene (PP) composites are investigated. The quality of NFRP machined surface is quantified using a multi-scale analysis based on wavelets decomposition. The natural fiber effect related to the machined surface quality is hence identified at all scales from roughness to waviness. The Bamboo fibers reinforced plastics which exhibit high contact stiffness shows the smoother surface finish after machining. Therefore, the multiscale surface roughness is used as descriptor of natural fiber's influence on the machining mechanisms and to establish the cutting signature of NFRP materials.

Measurement and optimisation of residual tensile strength and delamination damage of drilled flax fibre reinforced composites

“…Nonetheless, it must be noted that natural fibre; such as flax, should behave differently to that of synthetic fibre. According to Chegdani et al [34], natural fibres are soft by nature due to their high cellulose content. This characteristic gives them the ability to deform under the fibre-tool interaction and limit any failure due to the fibre brittle fracture [34].…”

“…According to Chegdani et al [34], natural fibres are soft by nature due to their high cellulose content. This characteristic gives them the ability to deform under the fibre-tool interaction and limit any failure due to the fibre brittle fracture [34]. While this explains the contradictory results of the entrance and exit delamination factor observed in this current study, further investigation could be undertaken through the adjusted delamination factor as suggested by Rubio et al [30] and Davim et al [35].…”

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

“…In order to understand the effect of tool coating on the cutting mechanisms of flax fibers inside the NFRP, the specific cutting energy was calculated from cutting forces [28] for each cutting test configuration. Fig.…”

“…However, standard surface A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT 5 roughness reveals a similar behavior between GFRP and NFRP that include high natural fiber stiffness [20]. Thus, previous work of the authors [28] addressed the multiscale influence of the natural fiber type (particularly the fiber stiffness) on the tribological behavior of NFRP during profile milling process. This study showed that the effect of fiber type is more relevant at fiber bundle scales and the machined surface roughness level decreases linearly by fiber stiffness increasing at this scales range.…”

“…Then, this paper purposes the study of the multiscale effect of coated cutting tools on the NFRP surfaces after profile milling process. The tribo-energetic approach [28][29][30] was used to reveal the physical cutting mechanisms that are related to the tribological contributions of both coating and machining parameters. The multiscale approach [28,31,32] was hence used to identify the effect of the cutting contact conditions on the machined NFRP surface quality.…”