A failure analysis was performed on a broken 5 quart stove top glass pot. The origin was determined with optical microscopy, and the broken pot was assembled to show how cracking proceeded. The re-assembled pot is shown upside down in the upper left photograph. The failure originated at a preexisting “chip” on the interior at […]
Rubber Failure Analysis Demonstrates Rubber Fatigue
California rubber failure analysis expert performs a failure analysis on a rubber paddle. This piece failed as a result of fatigue. The fatigue failure initiated on the outer surface at a stress riser and progressed inwards. This is demonstrated by the photomicrographs above. Upper left is taken at 10X. Upper right is taken at 40X. […]
Medical Device Failure Analysis of a Catheter
California failure analysis expert witness performed a failure analysis on a piece of rubber that had been removed from a patient’s bladder. The piece was compared with the tip of a new exemplar catheter. Although the piece that was removed surgically was encrusted with salts, it was shown to be part of a catheter.
Swing Set Failure Analysis
California failure analysis expert analyzes forces necessary to cause a swing set to fail. There are times that it is claimed that a swing set failed under “normal use” conditions. Tests were performed to determine what minimum forces are necessary to cause the chain to be pulled from the ‘S’ hook that holds it to […]
Failure Analysis: Hurricane Window Defects
Laminated Glass: A glass failure analysis expert witness was engaged to inspect hurricane window defects. These windows were sold to meet the Miami Dade/State of FloridaBuilding Code Requirements for hurricane resistance, and during development of the process, it appears as if these requirements were met. However, the laminating plastic in these windows interacted with the […]
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