Glass expert performs a failure analysis on a failed tempered glass door. The spontaneous glass failure was analyzed to determine the cause of failure. This was one of several doors that failed spontaneously on a new high rise. Fortunately, the door did not fall apart; thus, the failure origin could be preserved. The upper left […]
Glass Failure Expert Looks at Tempered Glass Failure
Glass expert analyzed a broken tempered glass door. He was able to preserve the origin and perform a failure analysis. The spontaneous glass failure started in the center of the window and was caused by a nickel sulfide particle (NiS particle). This failure mechanism is well known and has been documented by others. In this […]
Glass Expert Discusses Construction Defect
Glass expert analyzed a failed shower enclosement wall made from tempered glass. The failure occured before the homeowner warranty had failed. The contractor refused to replace the glass panel. It was his opinion was that the homeowner had damaged the panel and was responsible. Glass failure analysis determined that the failure initiated under the frame. […]
Glass Expert Discusses Glass Ovenware
A glass expert in California compares Pyrex glass ware from two eras. The original glass ovenware was developed by Corning Glass Works. They introduced annealed borosilicate glass that had a lower thermal expansion coefficient than the more common soda lime glass. The lower expansion coefficient reduced the level of thermal shock and allowed this glass […]
Tempered Safety Glass
California glass failure expert discusses the safety aspects of tempered glass; Tempered glass is safer than standard (i.e. annealed) glass because “dices” into small pieces under certain failure modes. In reality, the overall glass failure is driven by residual stresses put into the glass by the tempering process. That is, tempered glass “destroys” itself. If […]
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