A failure analysis was performed on a light rail windshield failure. In this there was a pop and the operator was showered with glass. The glass failure analysis expert witness determined that there were two leads to the windshield defogger that were in proximity and because they were improperly wired, arcing occurred between them. The […]
Cast Iron Metal Fatigue Failure
California failure analysis expert performs a failure analysis on a failed cast iron “latch lever” from a wood stove. This failure initiated as a fatigue crack at a casting defect. It progressed as a fatigue crack through most of the thickness until the final overload failure. Upper left is a photograph of the backside of […]
Failure Analysis: “Exploding” Coffee Pot
California failure analysis expert was presented with the claim that a coffee pot had “exploded” when replaced on the coffee warmer in a convenience store.First of all, there is no “stored” energy to cause an explosion. The coffee is not under pressure, and the pot is made from annealed borosilicate glass. In addition, the broken […]
Plumbing Failure Analysis: Failure Analysis of a Water Flow Indicator
A California failure analysis expert performs a failure analysis on a broken water flow indicator. This flow indicator was in a large building, and as a result of the failure, there was substantial damage. The flow indicator consisted of a glass dome clamped into a metal housing.The failure originated where the flange of the glass […]
Broken Cutting Tool Failure Analysis
California failure analysis expert performs examines a failed cutting tool. In this case the cutting tool consisted of a carbide cutting tip brazed to a mild steel “post”. The failure of the post initiated as a fatigue crack at a grinding mark where the post was shaped to accept the carbide cutting tip. The final […]
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