Investigation of the mechanical properties and fracture morphology of glass ceramic fibers

The mechanical properties of magnesium aluminium silicate (MAS) and lithium aluminium silicate (LAS) single fibers were investigated. The fibers were prepared using different methods namely melt drawing (MAS) and continuous drawing (LAS) respectively. The glass ceramic fibers were subjected to the optimized thermal treatments and tested using the single fiber test method (SFT) in order to obtain and evaluate their mechanical properties before and after crystallization. The tested fibers were further characterized by scanning electron microscopy (SEM) and the results showed that the average tensile strength values were a function of the gage length and the fiber diameters.