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Influence of Vibration on the Fatigue Limit of Epoxy Based Coating Used for Water Storage Tanks

The fatigue damage and the stress distribution in potable water tanks coatings can be influenced by different factor particularly the vibration that results from various sources. In this paper, study the effect of vibration on fatigue resistance of two types of epoxy coatings (polyamine and polyamide epoxy coatings) used for potable water tanks. The vibration fatigue test apparatus is collected in the laboratory and used for testing. As a result the vibration reduced the fatigue limits of both types of coats compared to static case. Also, there is a reduced in values of the constants of Basquin’s equation for vibration fatigue tests compared to the static case. The applied coatings improve the fatigue resistance of stainless steel.