Process influences on mechanical strength of chemical strengthened glass

Abstract

The present research considers a wide number of specimens of chemical strengthened glass (CSG) produced in an industrial factory between 2001 and 2014 during the standard production and some experimental cycles. 391 specimens of 4 mm clear float glass 100 mm × 100 mm were considered. The DoP and SC measures were carried out on each specimen by non-destructive tests and the same specimen was tested in bending according to EN 1288-5 (Glass in building-Determination of the bending strength of glass—coaxial double ring test on flat specimens with small test surface areas, 2000) (double ring test-R45). The experimental investigation on CSG was supported considering a parallel investigation on float glass (FG) 4 mm thick. The experimental tests were carried out with the aim to evaluate the increase of strength due to chemical strengthening.