Impingement erosion, definition

ASTM G 40 ASTM G 73 Standard Terminology Relating to Wear and Erosion Standard Practice for Liquid Impingement Erosion Testing Definition of terms for erosion and wear. Resistance to erosion from impacts of liquid drops or jets. 

Liquid impingement erosion has been defined as progressive loss of original material from a solid surface due to continued exposure to impacts by liquid drops w jets (Ref 8). The opoative words in this definition are inipacts by liquid drops or jets. Liquid impingement erosion connotes repeated impacts or collisions between the surface being eroded and small discrete liquid bodies. 

Launch after launch, this repeated rationale convinced them that 0-ring impingement erosion and blow-by were within the bounds of acceptable performance. In FRRs, the Work Group s official definition of the situation was conveyed up the... 

Plastics are frequently used for applications requiring erosion resistance, but there does not seem to be much activity or interest in the tribology community of the 1990s. However, there are a number of tests that are applied and have been used to rate erosion resistance of plastics. Erosion, by definition, is progressive loss of material fiom a solid surface due to mechanical interaction between that surfitce and a fluid, a multicomponent fluid, or impinging liquid or solid particles (3). The field of erosion is usually separated into a number of forms of erosion liquid erosion, either continuous stream or droplet, solid particle erosion, slurry erosion, and cavitation erosion. Each have separate laboratory tests. 

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