Mechanical property scatter in CFCCs
Investigations of the tensile response of continuous fibre reinforced ceramic matrix composites (CFCC) revealed a considerable scatter in the initial elastic modulus, in the first matrix cracking stress and in the failure stress. The scatter is thought to occur due to the presence of (axial) residual stresses in the fibres and in the matrix. A method has been developed and validated which allows to quantify the axial residual stress state in individual CFCC specimens by subjecting them to intermittent unloading-reloading cycles. The method as well as the derived relationship between residual stress state and scatter in mechanical response is presented and verified.
Bibliographic Reference: Paper presented: ASME-IGTI, Stockholm (SE), June 1-6, 1998
Availability: Available from (1) as Paper EN 41721 ORA
Record Number: 199811250 / Last updated on: 1998-10-27
Original language: en
Available languages: en