Figure 5. Summary of compressive strength results
In comparison to the compressive strengths, the sprayed ”S” and the
extruded ”E” samples characterize significantly high values. It is
assumed that the particle acceleration minimizes the defects. The
samples with ”X” are loaded in the direction of feed, which means that
the front sides of the layers are subjected to pressure. It can be
assumed that the layer geometry has less influence since the layers
support each other against buckling. It is assumed that the layer
geometry has an influence on the two sample batches ”Z” and ”Y”. The
cross-section of the extrudate is not rectangular with sharp edges, but
rounded, so that defects accumulate.
A comparison of the bending tensile strengths of the individual batches
shows figure 6.