Lee, Rogers, & Woo presented a theory for calculating the stresses produced in glass by tempering. Unlike earlier treatments, theirs takes account of the viscoelastic properties of glass. This paper hopes to evaluate this theory by comparison with experimental data. Discrepancies were found to exist between calculated & observed stress distributions. For cases in which glass is quenched from initial temperatures above the strain point, these discrepancies result from the numerical formulation of the theory, not from any shortcomings of the theory itself. A modification of this formulation brought calculated & observed stresses into good agreement. For quenching from lower initial temperatures, the present theory could not be brought into agreement with experimental data.
