Abstract
De-bonding stress between SiC particle and Aluminum matrix is studied with cast hybrid Metal Matrix Composite (MMC) with SiC particles and Al2O3 whiskers. A notch is machined in the MMC sample and a wedge is inserted into the notch to introduce a crack. Raman spectrum of a SiC particle ahead ofthe crack is observed along with the crack growth. The crack growth is also observed by an optical microscope. The peak frequency of Raman spectrum increases when the crack grows over the SiC particle.
