Evaluation of crack profiles by Bando et al. Analysis of crack opening displacements

The behavior of cracks in glass is discussed contrary for many years. Both purely elastic material behavior as well as plasticity and viscosity were discussed. One of the key results were the crack opening measurements of Bando which were considered for an indication of non-elastic behavior.
There are two effects of water, damage by breaking the ring structure due to chemical water reaction and swelling. In this short note, the effect of damage by the water-glass reaction is addressed. In this report we deal with a purely linear attempt by the J-integral.