2013 Volume 57 Issue 1 Pages 33-38
Functionally graded materials with different mechanical and thermally characteristics on two sides due to changes in the material composition have been applied in various fields. In this study, cutting performance on tool fracture was evaluated using a cutting tool with functionally graded material in which the interface angle is at right angles to the cutting force direction. Appropriate material characteristics for the cutting tool and cutting force direction were investigated experimentally, and an FEM model with the optimum composition material and interface angle was prepared. In the results of FEM analysis, the stress generated on the cutting edge in the FEM model with controlled interface angle was lower than in the case without such control. Consequently, fracture resistance of the cutting tool was improved in the real continuous and intermittent cutting experiment by control of the interface angle of the functionally graded layer, thus improving durability.
