• Rouxel, Tanguy
• Sangleboeuf, Jean-Christophe
• Houerou, V. Le

Abstract

Grinding and polishing are widely used for glasses machining with fine finished surfaces. These processes result from abrasion due to repeated contacts between hard sliding particles and the glass surface. The study of contact mechanics problem is of fundamental interest to understand the process of material removal in glasses. In order to get insight into this problem, an experimental set up was designed which allows a monotonic loading of the indenter combined with a controlled sliding of the specimen to simulate a slow abrasive machining process. In addition, the experiments are conducted with an in-situ video acquisition that allows an accurate observation of the different fracture phenomena beneath the indenter. Fracture surfaces were also studied using SEM and AFM for multi-scale investigation. Fracture analysis was carried out to characterize a standard float glass, four different SLS glasses and a fused silica glass. These observations lead to a precise identification of the phenomena and a better understanding of the dynamic creation and the development of fracture patterns in the light of the influence of normal load and chemical composition. This work is found out to be complementary and in good agreement with the data reported in literature.

Topics

• impedance spectroscopy
• surface
• scanning electron microscopy
• experiment
• atomic force microscopy
• grinding
• glass
• glass
• chemical composition
• lime
• polishing
• static light scattering