Metal Matrix Composites (MMCs) are utilized in various industries due to their unique characteristics. Despite their spreading applications in different fields, the MMC manufacturing industry is still facing a major challenge, particularly the prediction and improvement of the quality and integrity of machined surfaces. This paper is focused on subsurface damage, which is considered to be an important aspect of surface integrity of machined parts. A novel model for prediction of the depth of damage beneath the machined surface is presented and discussed. The model is developed through investigation of plastic deformations along with the fracture and debonding of reinforcements. Comparison with data from machining experiments is performed to verify the accuracy of model predictions.

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