THE FRACTURE OF SODA LIME GLASS

An indentation technique was used as a means of evaluating the fractur e toughness of a soda-lime glass. The specimens were indented using a conventional Vickers hardness testing machine. Toughness values, K(Ic) values were calculated in terms of the indentation parameters 2a and 2c, using, the Liang formula. A comparison was made between these valu es and others obtained from three and four point bending experiments. The effect of different storage environments (vacuum, air, water) was also studied.