Eventos Anais de eventos
COBEF 2023
12th Brazilian Congress on Manufacturing Engineering
A REVIEW ABOUT MACHINING OF COMPOSITIES MATERIALS TOWARDS MACHINING THE NEW A380/NBC COMPOSITE
Submission Author:
Bruno Edu Arendarchuck , SC
Co-Authors:
Bruno Edu Arendarchuck, Adriano Adriano Fagali de Souza, Luciano Lourençato, Hipolito Domingo Carvajal Fals
Presenter: Bruno Edu Arendarchuck
doi://10.26678/ABCM.COBEF2023.COF23-0111
Abstract
The use of metal matrix composites (MMC) has been highlighted due to industrial demands for better mechanical properties. MMCs of lightweight alloys such as aluminium and ceramic particles have been widely used in aerospace, marine, defense, and automotive industries. Niobium carbide (NbC) stands out as reinforcement due to its high hardness, good mechanical properties, and elevated Young's modulus. The advancement in manufacturing new composite materials leads to a further analysis of the process and parameters of machining these materials. The effects produced in the machining process of these materials are strongly influenced by the use of different amounts of reinforcement and its characteristics. Owing to the enormous heterogeneity of matrix alloys and reinforcements, machining CMMs left a challenging task. Several studies have been carried out in conventional and unconventional processes to optimize the machinability and characterize the processing quality of composites. The types of chips formed are related to some parameters like shear zone, material properties, and cutting conditions, which are influenced by the material. Surface integrity and quality are one of the most critical variables in its application. Different materials are expected to have different stresses in the piece, which could harm the piece's properties. The extremely high hardness of the most commonly used reinforcements, such as NbC, promotes relation to rapid tool wear; this condition could increase machining time and impair part quality. To reduce the problems of conventional machining, electric discharge machining (EDM) is the most used technique. This is mainly due to no direct contact between the instrument and the workpiece, avoiding mechanical forces and surface quality problems. However, there is a gap in studies to develop and characterize aluminum matrix composite reinforced with NBC. In this sense, an overview of some processes and parameters utilized to machining composite was presented. As conclusions form, the current work proposes some types of parameters which can be used in an optimized experimental matrix based on the Taguchi method to investigate the variables of different conventional machining (defined and non-defined tool geometry) and electrical discharge machining. This paper helps show some research on machining parameters and the challenges of the process on the composite.
Keywords
aluminum matrix composite, niobium carbide, machining parameters, Tool life
