California glass expert witness performed a failure analysis on a pyrex glass baking dish. This dish was made from pyrex borosilicate glass, and the glass failure occured as the dish was being removed from the oven. The failure initiated at an internal glass defect. The defect appears to be a colapsed bubble (seed) in the […]
Champagne Bottle Glass Failure Analysis
Glass failure expert performed a complete glass failure analysis on numerous champagne bottles that had failed in the riddling process. These bottles are used for riddling and they are made from a large amount of re-cycled glass. Several of these bottle failures initiated at a site that had a piece of unmelted cullet (Note: Cullet […]
Shaping Flat Glass
Glass expert describes the condition of the edges of windows, mirrors and other flat glass pieces. Almost all flat glass pieces are shaped from larger pieces using glass scribe and break techniques. Thus the edge of the part has two distinct sides. The photograph above is a microscopic picture of a the edge of an […]
Glass Machining Expert Discribes Antique Scribed Edge
Glass expert had he opportunity to examine the edge of antique rolled, ground and polished window glass. This glass was removed from a greenhouse built in 1930. The window glass was sized by glass scribing and breaking it from a larger piece of glass. Above is a photomicrograph of the edge of the window. The […]
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 […]
- « Previous Page
- 1
- …
- 10
- 11
- 12
- 13
- 14
- …
- 19
- Next Page »