An analytical method for predicting damage zone in orthogonal machining of unidirectional composites

Abstract

The objective of this research was to study chip formation mechanisms in order to predict damage in the orthogonal machining of unidirectional polymer–matrix composites by experimentation and analysis. This study presents a new analytical formula, which is able to successfully predict the fiber orientations at which depth of machining damage is higher based on different cutting parameters and can be used to minimize machining damage by selecting proper fiber and matrix materials. Orthogonal cuttings were conducted by experiments and then compared to the developed theory. The variables that were presented for this research were tool geometry and fiber orientation.

Machinability analysis of dry drilling of carbon/epoxy composites: cases of exit delamination and cylindricity error

“…The material removal is initiated by an opening, which penetrates the material below the cutting direction, according to the fiber/matrix interface, extended by a secondary rupture, which rises to the shear fibers, as shown in Fig. 9a [23].…”

Experimental study of delamination and kerf geometry of carbon epoxy composite machined by abrasive water jet

“…3,4 Conventional machining of carbon epoxy composite material is difficult due to excessive tool wear, cutting forces and temperature, impermissible kerf properties, etc. 5,6 Also conventional machining induces delamination; cracking and fiber pull out in FRPs. 7 Abrasive water jet machining (AWJM) is being widely used in industries due to its distinct advantages over the other machining processes such as no thermal distortion, high machining versatility, high flexibility, and low cutting forces.…”

Preparation and Damping Properties of Al2O3 Hollow Spheres/Epoxy Composites Encapsulating Q195 Steel Pipes

“…However, there are some limitations on shock absorber actively performing vibration-damping: 1) Heavy; 2) Higher magnification during resonance; 3) Larger space needed. [4,5] Therefore, passive control technique which has been developed with vibration damping technique based on elastic damping materials provides an economic and effective way to solve the multi-resonance peak vibration problems [6][7][8] .…”