ABSTRACT
Composites .......................................................................................................... 4 1.3 Model with one Interface Layer and the Effects of its Modulus and Strength .... 6 1.3.1 Effect of Interface Elastic Modulus on Composite Properties ................... 6 1.3.2 Effect of Interface Yield Strength on Composite Properties ...................... 8 1.4 Stress Analysis Using a Multilayer Transition Interface Model .......................... 9 1.4.1 Stress Analysis with Single Interface Layer Model ................................. 10 1.4.2 Stress Analysis with Three Transition Layers .......................................... 13 1.4.3 Stress Analysis with Six Transition Layers .............................................. 16 1.4.4 The Effect of the Transition Interface on the Elastic Modulus in a Unit
Cell Model ......................................................................................................... 18 1.5 Conclusion ......................................................................................................... 19 Keywords ................................................................................................................... 20 Acknowledgment ....................................................................................................... 20 References .................................................................................................................. 20
1.1 INTRODUCTION
The particles adopted are usually non-metallic such as ceramics and graphite, as they tend to have properties by their own. The main factors to be considered when choosing a type of particle should include shape and size, physical properties, mechanical
properties, processing, and its compatibility with the matrix. The currently widely used particle reinforcements are SiC, BC, and Al2O3, which are effective in increasing composite strength and modulus. However, the drawback is the significant loss of ductility. The ceramic particles are brittle materials. Under stress, the particles themselves, and the particle-particle and the particle-matrix interfaces can all fracture, leading to the composite failure.
