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US 7,596,986 B2Granted
Method of testing liquid drop impact and apparatus
Assignee3M Innovative Properties Company
InventorsMichael P. Daniels, Ryan E. Marx
Life of this patent
Estimating the term…
Abstract
Methods and apparatus of evaluating liquid impact are described that included providing a thin layer of an (e.g. atmospheric) liquid, such as water, on the surface of the test sample while being impacted with a (e.g. polymeric) pellet.
Claims16
A method of evaluating liquid impact or erosion comprising:
- providing a test sample;
- providing a film of liquid on a surface of the test sample wherein the liquid comprises a surfactant suitable for reducing the surface tension of the liquid;
- impacting the film of liquid with at least one pellet wherein the pellet impacts the test sample surface at a velocity ranging from 200 mph to 5000 mph;
- measuring at least one physical property of the test sample after impact.
1 more element
An apparatus for evaluating liquid impact or erosion comprising:
- a means for fixing two or more test samples on a rotating wheel;
- a means for providing a film of liquid on a surface of the sample, the liquid including a surfactant suitable for reducing the surface tension of the liquid;
- and
- a means for impacting the surface with a pellet at a velocity ranging from 200 mph to 5000 mph.
1 more element
Dependencies are inferred from the claim text.