Scanning Acoustic Microscopy Of Scs-6 Silicon Carbide Fibre

Scanning acoustic microscopy of SCS-6 silicon carbide fibre reveals large radial variations in acoustic reflectivity associated with the chemical composition and microstructure of a given fibre region. Rayliegh wave fringe patterns observed in each of five subregions are used to calculate the average Young modulus of that subregion. The effective Young's modulus of the fibre as a whole is estimated from the moduli of the individual regions and it is compared with mechanical measurements reported in the literature.