Choice of the working conditions for Raman extensometry of carbon and SiC fibers by 2D correlation

The measurement by Raman extensometry of stresses in fibres used for reinforcing composites requires careful choice of the best suited spectral probe and of working conditions that allow for the best compromise between accuracy and speed. In this paper we show how 2D-correlation methods can be of precious help on both counts, when applied to Raman spectra.