Icephobicity of a surface is the value of the shear stress between the substrate and the adhered ice on it. There are many techniques to measure icephobicity of a surface. A decent one offers to apply a shear force to an ice cube formed on the surface in order to measure maximum force needed to detach the ice. Ice Adhesion Test Machine is a device that applies a shear force and measures the shear stress between the ice and the surface, operating in desired temperature and humidity, and eventually analyzes the results in an integrated software.
Check out Jikan IAT-40 specifications and features.