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. […]
Hot Dip Galvanized verses Electro-Galvanized Nails
Metallurgy expert describes the difference between hot dip galvanized nails and electro-galvanized nails. Manufacturers have changed from hot dip galvanizing to electro-galvanizing. The zinc is a sacraficial materail; therefore, the protection afforded by the galvanize layer (zinc) depends on the zinc thickness. All other things being equal, the electro-galvanized nails with the much thinner zinc […]
Glass Expert Analyses a Broken Bottle
Glass failure analysis expert witness performs a root cause failure analysis on a broken bottle. This bottle broke into pieces (lowerleft figure). A failure analysis determined that the failure origin was in the bottle neck under the plastic cap (lower right figure). The glass expert removed the cap and the the residual polish (top left figure). […]
CPVC Plastic Failure Analysis of Hot Water Pipe Fitting
Plastic failure expert performs a failure analysis on a failed CPVC 90° 3/4 inch elbow. This elbow was in a 150°F hot water recirculation system in a large facility. Plastic fatigue was the alleged cause of failure. However, a plastic failure analysis found no evidence of fatigue. Instead, the detailed root cause failure […]
- « Previous Page
- 1
- …
- 51
- 52
- 53
- 54
- 55
- …
- 60
- Next Page »