Abstract
Earlier observation of cavitation erosion of polyurea coatings has shown that failure is due to synergetic effects between the locally imparted impulsive loads and heating of the material. Both result from the interaction between large amplitude cavitation bubble dynamic and material response and deformation. In order to investigate this interaction and quantify damage and heat generation in the material subjected to cavitation, cavitating jet tests were conducted on polyurea coated samples while measuring both the erosion of the polyurea and the temperature evolution. The effects of polyurea composition, cavitation field intensity, material of the substrate, and thickness of the polyurea coating on the erosion and temperature were deduced from the tests.
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