Mechanical characterisation of a fibre reinforced oxide/oxide ceramic matrix composite

D.T Di Salvo,E.E Sackett,R.E Johnston,D Thompson,P Andrews,M.R Bache

doi:10.1016/j.jeurceramsoc.2015.08.032

D.T Di Salvo, E.E Sackett + Show 4 more

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https://doi.org/10.1016/j.jeurceramsoc.2015.08.032

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Abstract

Monotonic tension, fatigue and creep experiments were conducted on an oxide/oxide ceramic matrix composite over the range of temperature 20–1200°C. The role of continuous fibre reinforcement, differential thermal expansion, stress redistribution interactions between fibres and matrix and the influence of inherent processing defects are all considered when describing the deformation and ultimate mechanical failure of these systems.

Highlights

High performance engineering designs for land based power generation systems and aero-engine applications continue to drive research into ceramic composites, mainly due to their high temperature capability which offers increased operating temperatures [1]
The successful implementation of oxide/oxide ceramic matrix composite systems (CMCs) for structural applications will require a compromise in mechanical performance compared to the competing non-oxide systems, where SiCf/SiC is currently viewed as the industry leader
Specimens were deliberately selected to sample different CMC panels at random locations within each, i.e. some were taken near the panel edges and others in the mid sections

Summary

Introduction

High performance engineering designs for land based power generation systems and aero-engine applications continue to drive research into ceramic composites, mainly due to their high temperature capability which offers increased operating temperatures [1]. In the aerospace sector their low density provides attractive specific properties with the potential for reductions in component weight. The successful implementation of oxide/oxide CMCs for structural applications will require a compromise in mechanical performance compared to the competing non-oxide systems, where SiCf/SiC is currently viewed as the industry leader. This should not avert interest in the oxide/oxide systems

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Discussion

Conclusion