| Abstract: | Characterisation of the strength and failure behaviour of carbon fibre reinforced carbon (C/C) and siliconized carbon fibre reinforced carbon (C/C‐SiC) under flexural load The mechanical investigation of different C/C and C/C‐SiC materials as well as the gaining of engineering data and the criteria for failure behaviour have already been widely discussed in literature. However, further developments of these materials show that an interpretation of the results can be very difficult, for example those obtained from flexural tests, especially when special fibre preforms or additives are used. The effects of geometry and machining are also examined. On the basis of conventional testing methods it is often not possible to report on the failure mode or on the origin of failure. Therefore, in order to obtain exact information, additional 3‐point in‐situ flexural tests were performed by means of scanning electron microscopy (SEM), offering the possibility of studying the failure behaviour of the materials under flexural load. Three standard materials (CF222, CF222P75 and CF222P76) of Schunk Kohlenstofftechnik GmbH, Giessen, were tested in the investigation. |
