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

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

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.

Citation

Gavalda Diaz, O., Garcia Luna, G., Liao, Z., & Axinte, D. (2019). The new challenges of machining Ceramic Matrix Composites (CMCs): review of surface integrity. International Journal of Machine Tools and Manufacture, 139, 24-36. https://doi.org/10.1016/j.ijmachtools.2019.01.003

• Journal Article Type: Article
• Acceptance Date: Jan 13, 2019
• Online Publication Date: Jan 23, 2019
• Publication Date: Apr 30, 2019
• Deposit Date: Feb 7, 2019
• Publicly Available Date: Feb 7, 2019
• Journal: International Journal of Machine Tools and Manufacture
• Print ISSN: 0890-6955
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 139
• Pages: 24-36
• DOI: https://doi.org/10.1016/j.ijmachtools.2019.01.003
• Keywords: Mechanical Engineering; Industrial and Manufacturing Engineering
• Public URL: https://nottingham-repository.worktribe.com/output/1526926
• Publisher URL: https://www.sciencedirect.com/science/article/pii/S0890695518306084