New Multiscale Approach for Machining Analysis of Natural Fiber ReinforcedBio-Composites

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. This is an author-deposited version published in: https://sam.ensam.eu Handle ID ABSTRACTNatural fibers are emerging in many industrial sectors to perform eco-friendly materials such as bio-composites. However, machining of natural fiber reinforced polymer (NFRP)composites remains a complex manufacturing process and the machinability of industrial components underlies a specific approach that involves the multiscale structure of natural fibers. This paper presents first a multiscale method used in machinability rating of NFRP.The fundamentals of the multiscale method are hence applied to experimentally assess the machinability of a complete industrial bio-composite part. Results show that machining NFRP composites requires specific analysis scales that are intimately linked to the natural fibrous structure. The multiscale method can be used to improve the experimental design of NFRP machining and, above all, to determine the optimum process parameters that reflect the multiscale machining characteristics of these bio-based materials.

Micromechanical modeling of the machining behavior of natural fiber-reinforced polymer composites

“…Indeed, the multiscale complex cellulosic structure of natural fibers prevents an efficient fiber shearing due to their high transverse elasticity which makes them highly sensitive to the variation of machining process parameters [10][11][12][13]. Furthermore, the multiscale random arrangement of the natural fibrous structure that includes the elementary fiber, the technical fiber, the fiber bundle, and the fibers yarn imposes the selection of the pertinent scale for analyzing the machined surfaces of NFRP composites [14]. The multiscale behavior is also present inside each elementary plant fiber.…”

Machining parametric study on the natural fiber reinforced composites: A review

“…The mechanical characterizations of the NFRCs were evaluated by the multiscale topographic of the milling surface signals. 133 The few representations of tool material and their geometry are summarized in Table 5 [134][135][136][137][138][139] which affects the performance of the composite.…”

Challenges on machining characteristics of natural fiber-reinforced composites – A review

“…Due to the heterogeneous nature of composites the machining of composites is a complex process. 13 The existing literature has demonstrated that the machinability of composite materials is not the same as that of homogeneous materials. 14 Tool material and geometry have a large influence on damaged caused during machining composites.…”