A uniaxial powder tester has been added to the FT4 powder rheometer, extending the system’s ability to measure properties that directly correlate with a powder’s in-process behavior. Uniaxial testing complements the FT4’s existing test methodologies for shear, bulk and dynamic powder measurement.

A new accessory can reportedly produce a homogeneous, uniform powder column for testing. Measuring the normal stress required to fracture the column directly identifies the unconfined yield strength. Comparative tests show that the new solution produces data closely comparable to those derived from shear test data, but with improved repeatability.

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