Strength Evaluation for Nano-components based on Experimental Observation and Computational Simulations

摘要

In order to investigate the fracture behavior at interfaces in nano-components, crack initiation process in nano-cantilever specimens including interface edges is experimentally observed by a TEM with a loading device and the critical stress is analyzed by a finite element method (FEM). Figure 1 shows the specimen configuration and change in the applied load during the experiment. The elasto-plastic stress at the critical load reveals that the delamination at the interface edge is governed by the singular stress field based on the fracture mechanics concept (Fig. 2).