Glass failure analysis expert discusses interesting window failure, that of a piece of antique window glass. The window expert performed a failure analysis that determined the failure initiated at crush damage from the scribing operation, and it started as a bending crack. It then transformed into a “thermal crack”. That is the crack front was […]
Glass Expert Discusses Termpered Glass Cookware
Modern Pyrex glass cookware is now made from tempered soda lime glass. As a result, there is a potential that the tempered glass failure will create dangerous projectiles. In one case it was found that if the temper glass stresses are not symmetrical, flying glass pieces will occur. In the present case, tempered glass cookware […]
GLass Failure Analysis Expert Discusses Wire Glass
Safety glass expert has examined numerous broken wire glass doors and windows. In the past wire glass has been mistaken to be safety glass; however, it is just as dangerous as standard annealed window glass. The wire is bonded between two pieces of semi-soft glass at high temperature. When this “sandwich” cools to room temperature, […]
GLass Expert Discusses Glass Bottle Strength
Glass failure analysis expert performed bottle strength tests to determine the strength of a cylindrical glass bottle. The bottle is approximately 0.85″ in diameter and 2.35″ tall. The glass thickness is approximately 0.040″ thick. It was hypothesized that a female could squeeze the bottle hard enough to crush it. Glass strength was measured by compressing […]
Glass Expert Discusses Visibility of NiS Particles
Tempered glass failure analysis is mainly difficult because the panel disintegrates into a very large number of semi identical particles; therefore, the failure origin is impossible to locate. In several cases Read Consulting has had the opportunity to examine several failed (caused by Nickel Sulfide, NiS, particles) tempered glass panels that have remained intact. In […]
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