A failed plastic chair was submitted to our failure analysis laboratory for examination. The right rear leg had broken off; however, the initial chair failure occurred on the left rear side. The left rear leg separated from the chair body due to poor bonding and molding porosity at the top of the leg. The failure […]
Failure Analysis of Restaurant Glass Coffee Mug
Failure analysis laboratory performed a root cause failure analysis on a restaurant glass coffee mug that failed unexpectedly when it was lifted off the table and injured a server. The bottom of the mug separated from the rest of the mug . The origin of the failure was on the interior of the mug at […]
Glass Expert performs a Failure Analysis of a Wine Glass
California glass expert performed a failure analysis on a failed wine glass. Glass failure analysis requires locating the fracture origin. The origin is then analyzed microscopically to determine the cause of failure. In this case the failure origin was on the rim of the glass. At the failure origin is a very small mirror fracture […]
Assessing Already Broken Tempered Glass
Glass Expert at Read Consulting is asked to assess whether a broken window or shower door was fully tempered. One method is to select the ten largest “crack free” pieces and determine if these can fit into a 10 square inch area. In the photo above, a 3″ X 3″ (approximately 10 square inches) “frame” […]
Glass Bowl Failure Analysis
A Read Consulting glass expert witness performed a glass failure analysis of a glass crack driven by thermal stresses. The failed bowl cracked in a microwave oven. Often failures with known causes can be analyzed to lend insight as to the cause of an “unknown” glass fracture. This fracture has many of the aspects of […]
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