An interesting paper in « Case studies in Engineering Failure Analysis » published on ScienceDirect.com.
This paper studies the failure of spark plugs designed for optimal durability which failed after only 100 hrs of operation. SEM-observation showed that in failed plugs the insulator was covered with a deposit consisting of iron oxides and soot.
Les bougies étudiées ici sont commercialisées aux Etats-Unis comme étant d’une conception permettant de hautes performances et sont utilisées sur des moteurs 24 soupapes, 5,4 litres V8.