Studying the variation of parameters characterizing the material surface during the droplet erosion incubation period

Surface topography parameters as a correlation factor for liquid droplet erosion test facilities

“…It was shown that the trend of the surface parameters varied with the change in the erosion stages of the material leading to an indication of the end of the incubation period. The authors of the whirling arm results [22] also showed variations in surface parameters with the ending of the incubation period. In this case, line profiles were taken and the parameters found to correlate to the erosion stages were R p , R v and RS m .…”

“…Further cavitation erosion testing showed that using line profile surface topographical measures, the incubation stage, the transient or acceleration stage [18,19] and the steady state stage [20] could be identified. In terms of liquid droplet erosion, it has been shown that erosion caused by both water jet and whirling arm test methods show similar results to that seen in cavitation erosion [21,22]. The water jet test erosion results were analysed using 3D areal parameters filtered to produce R a and R z parameters [21].…”

“…The use of surface topographical measures to analyse the erosion of materials and indicate the various stages of erosion has been previously reported [17][18][19][20][21][22]. Initially, under cavitation erosion conditions, it was considered that the roughness values would increase with increase test duration [17].…”

Experimental research results of the aluminum alloy erosion wear at variable parameters of the high droplet impact

“…Tests of aluminum alloy D16T experimental samples were carried out by using the unique research installation URI "Hydroshock rig" Erosion-M" NRU "MPEI", entered in the Russian Federation register of unique stands and installations [14]. Experimental studies of aluminum alloy D16T samples were carried out at the given collision velocities of the samples (C imp = 200, 250, 300 m/s) with water droplets of known diameter (d d = 800, 1000 μm).…”

Morphological features and mechanics of destruction of materials with different structures under impact drop cyclic loading

“…In practice, the conditions for droplet erosion are formed during condensation in vapor-gas environments and lead to progressive deterioration of the blades of steam-gas turbine and compressor equipment. This problem is very relevant and is being actively studied [8][9][10][11][12][13][14].…”