Ceramic Matrix Composites

Ceramic systems have long been considered as potential replacements for metallics for selected gas turbine applications due to their superior high temperature capabilities and significant reductions in density. The fundamental brittle nature of ceramics, however, does not support damage tolerant design and component lifing which is a major consideration for safety critical parts. The preferred approach adopted to improve damage resistance, crack growth and toughness of ceramics has been to process them in the form of ceramic matrix composites, i.e. embedding a second ceramic reinforcing phase within a ceramic matrix. Previous Swansea UTC research has assessed the mechanical performance of continuous fibre reinforced silicon carbide and alumina based materials at test temperatures up to 1400oC.

Ongoing research is now concentrating on novel test development to monitor damage accumulation in CMCs under static and cyclic loading, utilising digital imaging and automated potential drop techniques, forming part of a significant global strategy for the development of CMC components.

Further reading:

  • B. Wilshire and M.R. Bache, “Creep of monolithic and fibre-reinforced silicon carbide”, Journal of the European Ceramic Society 28 (2008) 1535-1542. 10.1016/j.jeurceramsoc.2007.12.008
  • P31.       M.R. Bache and B. Wilshire, “Creep damage resistance of ceramic-matrix-composites”, J. Eur. Ceramics Soc., 27, pp. 4603-4611, 2007. 10.1016/j.jeurceramsoc.2007.03.029
  • R.E. Johnston, M.R. Bache, M. Amos, D. Liaptsis, R. Lancaster, R. Lewis, P. Andrews, I. Edmonds. “Investigation of Non-Destructive Evaluation Methods applied to Oxide/Oxide Fibre-Reinforced Ceramic Matrix Composite”. Proceedings of the 36th International Conference and Exposition on Advanced Ceramics and Composites January 22-27th 2012, Daytona Beach, Florida, USA.
  • M.R. Bache, R.E. Johnston, J. Rouse, P.J. Withers and I.M. Edmonds; “Non-destructive Computer Tomography Inspection Applied to CMC Materials”, in Proceedings of the 12th European Inter-regional Conference on Ceramics (CIEC 12),  7-9 September 2010, University of Mons, Belgium, paper C1, 2010 (CD)
  • D. Di Salvo, M.R. Bache, N. Banerjee and P. Andrews; “Damage Accumulation in Ceramic Matrix Composites Under Tensile Stress Modes” presented to the 12th European Inter-regional Conference on Ceramics (CIEC 12),  7-9 September 2010, University of Mons, Belgium
  • E.E. Sackett, R.E. Johnston, M.R. Bache and I. Edmonds; “Fatigue, monotonic rupture and creep behaviour of fibre reinforced oxide-oxide ceramic matrix composites”, in Proceedings of the 13th European Inter-regional Conference on Ceramics (CIEC 13), 12-14 September 2012, Universitat Politècnica de Catalunya, Barcelona, Spain, 2012.
  • Wilshire and M.R. Bache, “Creep and creep fracture strengths of SiCf-SiC type composites”, in CIEC 10, Proceedings of the 10th European Inter-regional Conference on Ceramics”, Eds. B. Wilshire and M.R. Bache, Swansea Materials Research Centre, Swansea, pp. 221-230, 2006. 

Ceramic Matrix Composites Ceramic Matrix  Ceramic Systems