5/31/2023 0 Comments Pulser receiver ultrasoundBased on these simulations, an experimental UPE device was developed to measure echo signals on top of the ice corresponding to surface roughness. ![]() A series of simulations indicated that ice roughness can be measured quantitatively and effectively in the range of μm. A multilayer model with equivalent bead-like roughness profiles is established to study the effects of changes in ice roughness on ultrasonic echo signals. ![]() In this study, a noncontact ultrasonic pulse-echo (UPE) technique is applied to characterize the ice roughness of an airfoil model’s surface. However, because the surface roughness of aircraft icing is a transient value varying in time and space, it is extremely difficult to measure with existing methods in real time. Ice surface roughness is an important parameter affecting the local convective heat transfer coefficient and the water collection coefficient, which in turn affect the ice’s shape. When an aircraft passes through clouds containing supercooled water droplets, the leading edge’s surface will gradually accumulate ice.
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