Materials Failure Analysis: A broken jam jar was examined to determine the cause of the failure. In this case, the top of the jar separated from the body as the user was trying to twist the metal lid off. The upper left photo is of the severed top of the jar. The lid did not […]
New Construction WIndow Glass Scratching
The window in the photograph above was damaged during post construction cleaning. Although glass is a hard material, dust, sand and other debris are just as hard and can damage glass. Therefore, one must be careful when cleaning glass. The damage seen in the window above is only visible in direct-oblique light; thus, it is […]
Glass Failure Due to Edge Grind Damage
Read Consulting glass failure experts analyzed several cracked laminated windows. They were made from two pieces of 1/4 inch thick glass laminated with 0.02″ thick PVB. Oneof the glass panes is tinted such that it absorbs 65% of the incoming “heat” from light. It is the tinted piece of the laminate that broke. The failure […]
Manufacturing Defect Analysis: White Rust Corrosion
A new barn built with galvanized and painted steel demonstrated the type of defect shown in the photograph on the left. After less than one year verticle lines of white spots appearedon the painted surface. These spots were examined by a coating engineer to determine the root cause of the defect. Associated […]
Glass Failure Analysis of Vehicle Windows
Glass Failure Expert reminds users that there are two types of windows in automobiles. All the side and rear windows are made with fully tempered glass. This is required for safety. These windows will break into small “cubes”, and they are less likely to cut the occupants during an accident. The windshield is made from […]
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