Method and apparatus for measuring adhesion of particulate mater

Details Method and apparatus for measuring adhesion of particulate mater Method and apparatus for measuring adhesion of particulate mater

1978-04-17

1979-07-17

Goldstein, Herbert

Measuring and testing

Gas content of a liquid or a solid

By vibration

73845, 73150A, G01N 2500

Patent

active

041611144

ABSTRACT:
Apparatus and a method are disclosed for measuring adhesion of particulate materials. A geometric object, such as a steel ball, is immersed in a sample of particulate material which is compacted to a predetermined density. The temperature of the sample is carefully controlled while the steel ball is pulled from the sample. The force required to pull the ball from the sample at a given temperature is recorded. Numerous tests conducted at different temperatures provide data to define a characteristic curve for a given particulate material. The apparatus and method is particularly useful for measuring the adhesion of aluminum powder such as that used as fuel in rocket motor solid propellant.

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Kraeutle, "Method to Test Adhesion of Aluminum Particles during Subignition eating ---", CPIA Publication 281, 12/76.

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