In this report the behavior of homogeneous materials subjected to repeated impingements of liquid droplets was investigated. Based on fatigue theorems, a model was presented for describing both the incubation period ni (that is, the time elapsed before the mass loss of the material becomes appreciable), and the mass loss past the incubation period m. The parameters were established which govern the length of the incubation period and the subsequent mass loss rate, and simple algebraic expressions were developed relating ni and m to the properties of the impinging droplets and the material. The limits of applicability of the model was also established.
The results obtained were compared to available experimental data. Reasonable agreement was found between the present results and the data, indicating that the model developed can be used to estimate the incubation period and the mass loss of the material.
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