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Details of Grant 

EPSRC Reference: GR/L93393/01
Title: COMPUTATIONAL MODELLING OF FATIGUE & FRACTURE BEHAVIOUR OF CERAMIC & INTERMETALLIC MATRIX FIBROUS COMPOSITES
Principal Investigator: withers, Professor P
Other Investigators:
Thomason, Dr P
Researcher Co-Investigators:
Project Partners:
Department: Manchester Materials Science Centre
Organisation: Victoria University of Manchester, The
Scheme: Standard Research (Pre-FEC)
Starts: 14 September 1998 Ends: 13 April 2002 Value (£): 151,694
EPSRC Research Topic Classifications:
Materials Characterisation
EPSRC Industrial Sector Classifications:
Aerospace, Defence and Marine
Related Grants:
Panel History:  
Summary on Grant Application Form
The aim of this project is to help to underpin the development of new ceramic and intermetallic composites by providing a computational modelling tool for the testing out of different fibres, matrices and interfaces prior to expensive fabrication and testing stages. Our modelling work will link up with experiments being undertaken by Professor R O Ritchie's research group at the Lawrence Berekeley laboratories, University of California, where fatigue and fracture experiments are being carried out at temperatures from ambient up to 1200*C. Systems being tested include partially-stabilised Zirconia, Alumina and Silicon Nitride reinforced with SiC whiskers, Titanium Aluminide reinforced with ductile TiNb particles, Niobium Aluminide and Molybdenum Disilicide (the melting point of MoSi2 is 2050*C) reinforced with Niobium particles. Recently, TiAl composites containing 10% TiNb particles gave KIC = 25Mpa/m (c.f. KIC =8Mpa/m for TiAl). However, while excellent toughness can be achieved, fatigue properties remain poor. This project will enable a methodical evaluation of interface/matrix and fibre properties with the aiming of improving the fatigue response.
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