Influence of the velocity and impact angle on the distribution of the surface defects of a sandblasted glass

Abstract

Abstract Sandblasting erosion tests were simulated in laboratory to study the size distribution of defects generated by sandstorms in the Saharan regions on soda lime glass, considering different velocities ( V = 15, 25, 35 m/s) and different impact angles (α = 30°, 60°, 90°). The influence of these 2 parameters on the defect sizes and the defects number was studied. The defect sizes were measured on a surface of 1 cm 2 in the central zone of the damaged surfaces. The damaged surfaces show that the defects with varying sizes are randomly distributed. The surface degradation increases as the velocity and the impact angle increase. Weibull analysis was introduced to characterize the size distribution of surface defects for different test conditions. Weibull plots indicate that the behavior is presented following 2 aspects: The first aspect is unimodal which exists only in 2 extreme conditions, and the second aspect is bimodal, but only for intermediate cases.