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The mechanical response of continuous fibre reinforced ceramic matrix composites (CFCC) under short-term time independent tensile loading can be represented in a novel way by employing the concept of the �master curve�. This curve is unique for each composite with a given reinforcement structure and it can be constructed through unload-reload sequences. The master curve rationalizes the scatter which is usually observed in the tensile response of CFCCs since it takes into account the variation in the axial residual stress state from specimen to specimen. Damage �parameters� such as the true evolution of the axial stiffness and of the irreversible strain accumulation can only be reliably determined through the master curve, and not from the nominal stress-strain curves. Examples of erroneous interpretation of the damage determined from individual tensile curves are compared with the true damage state inferred from the master curve.

Additional information

Authors: STEEN M, JRC Petten (NL);FILIOU C, JRC Petten (NL);BONNEL P, JRC Petten (NL)
Bibliographic Reference: Paper presented: ECCM-8 Conference, Naples (IT), June 3-6, 1998
Availability: Available from (1) as Paper EN 41730 ORA
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