Effect of interaction between droplets on results of erosion tests

The possibility of high-speed interaction between liquid particles that spread apart upon impact on a solid body is considered. It is shown that the effect of such interactions on the erosion wear of turbine blades is negligible, while it can be the controlling factor in erosion testing of materials. In order to be able to compare the experimental data of different investigators and to use them in calculating the erosion failure of turbine blades, the distance between the centers of droplets should simultaneously impacting on the test specimen be more than 6 droplet diameters.