“…To compare degradation results, we have extrapolated the obtained trends in order to calculate the potential degradation at an equal sand mass. It was found that the loss in specular reflectance varies linearly with the injected sand mass, which is confirmed in previous studies (Marouani andBouaoudja, 2014, Bousbaa et al, 2003;Adjouadi et al, 2007). The linear extrapolation, F(x) = ax + b, was then determined for each impact angle.…”