Machining of ceramic matrix composites: Challenges in surface integrity

Abstract

Because ceramic matrix composites (CMCs) are often used to make high-value and safety–critical parts, it is essential to know how different machining methods affect them. Because CMCs have a complicated makeup, their mechanical and thermal behaviour is not uniform. One of their parts is usually very hard; machining them creates significant mechanical and thermal stresses. CMCs have a lot of orthotropic, brittle, and heterogeneous properties that affect how they are removed and how surface flaws are fixed. This work aims to do a literature review of research on conventional and non-conventional machining of CMCs so that the effects of different machining processes on the machined surfaces can be evaluated relatively. By comparing and contrasting different ways to describe materials, learn more about how mechanical and thermal surface and subsurface flaws can be fixed.