The new challenges of machining Ceramic Matrix Composites (CMCs): Review of surface integrity

Oriol Gavalda Diaz, Gonzalo Garcia Luna, Zhirong Liao, Dragos Axinte

Research output: Journal PublicationReview articlepeer-review

91 Citations (Scopus)

Abstract

Ceramic Matrix Composites (CMCs) are currently an increasing material choice for several high value and safety-critical components, fact that has recently originated the need of understanding the effect of several machining processes. Due to the complex nature of CMCs - i.e. heterogeneous structure, anisotropic thermal and mechanical behaviour and generally the hard nature of at least one of the constituents (e.g. fibre or matrix) - machining become extremely challenging as the process can yield high mechanical and thermal loads. Furthermore, the orthotropic, brittle and heterogeneous nature of CMCs result in different material removal mechanisms which lead to unique surface defects. Hence, this review paper attempts to provide an informative literature survey of the research done in the field of conventional and non-conventional machining of CMCs with a main focus on critically evaluate how different machining techniques affect the machined surfaces. This is achieved by exploring and recollecting the different material characterisation techniques currently used to observe and quantify the mechanical and thermal surface and subsurface damages and highlight their governing removal mechanisms.

Original languageEnglish
Pages (from-to)24-36
Number of pages13
JournalInternational Journal of Machine Tools and Manufacture
Volume139
DOIs
Publication statusPublished - Apr 2019

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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