dwallace1971 - no the glass is not tempered and I am coming at this from a failure analysis point of view. We already have the fractured components. I am trying to come up with a model to predict (rule of thumb more like it) if a coating would be safe or not. I already realize from the testing...
I am trying to model the stresses induced by thermal contraction of a conformal coating (epoxies, urathanes) on the glass envelope of a fragile bodied component. The glass is bonded to a metal post and the coating is then applied to the part. The glass is fracturing when the system is cooled...
