Application of Suresh and Lee Models in the Measurement of Residual Stress of Bulk Materials
Figure 4.1 shows the variation of pile up height with indentation depth of the single crystal copper. The pile up height of the single crystal copper shows a growth of approximate parabola with the increase of the indentation depth (from 300 to 800 nm) and the increase of amplitude is getting larger and larger. The pile up heights change in the range of 45 95 nm, occupying the proportion of indentation depth about 12 15%