Ice Adhesive Strength on the Surfaces With Shallow Groove Structures

Icing is an inevitable problem for most aircraft and has caused many accidents since decades ago. Many de-icing countermeasures have been prompt, such as electric heating, plasma synthetic jet, vibration, and so on. A combination of surface characteristics and piezoelectric vibration de-icing has been paid a lot of attention for its energy-saving capability. However, a more precise power release is always desired, which requires a more accurate estimate of ice adhesive strength. Hence, we conducted our investigations on the ice adhesive strength regarding surfaces with shallow grooves. We validated that a decrease in freezing temperature leads to an increase in ice adhesion. The reason could be a decrease in grain size. The patterns of how shallow grooves affect the ice adhesion correlates well with one of our earlier studies and suit the semi-empirical estimation well if adequate equalization was made.