Experiment investigation on effects of elastic modulus on cavitation erosion of silicone rubber

Research into cavitation phenomena in various fields shows that the elastic modulus of a boundary has a potential impact on cavitation erosion. To obtain the direct relationship between the elastic modulus of the boundary and cavitiation erosion, single-layer samples with different chemical composition and moduli, and double-layer samples with different elastic moduli and the same surface layer material, were prepared with silicone rubber. The results of cavitation experiments on single-layer samples, show that the coating chemical composition and mechanical properties together affect the cavitation morphology of the coating, and dominant factors vary with erosion stage. Through the cavitation test of double-layer samples, it was found that there is a positive correlation between the elastic modulus of the coating and the degree of cavitation. This study helps us to understand the relationship between coating elastic modulus and cavitation more directly, and provides theoretical and technical guidance for the application of anti-cavitation for elastic coating in engineering.

Automated summary

Research shows that the elastic modulus of a boundary can have an impact on cavitation erosion. By using single-layer samples with different chemical composition and moduli, as well as double-layer samples with different elastic moduli but the same surface layer material, the direct relationship between the elastic modulus of the boundary and cavitation erosion was studied. The results indicate that the coating's chemical composition and mechanical properties together affect the cavitation morphology, and the dominant factors vary with erosion stage. The study also found a positive correlation between the elastic modulus of the coating and the degree of cavitation, providing theoretical and technical guidance for the application of anti-cavitation coatings in engineering.